Mikhail Moiseyevich Botvinnik (August 17 [O.S. August 4], 1911 – May 5, 1995, though Kazakh Wikipedia reports his death as November 25, 1989) was a Soviet and Russian chess grandmaster and the sixth World Chess Champion.^{[2,8,124,187,238,116,359]} He held the World Championship title across three separate reigns (1948–1957, 1958–1960, and 1961–1963), remaining champion for a total of approximately 15 to 16 years.^[8,359] As the first world-class player and world champion to develop within the Soviet system, he was the only player in history to win the world title back twice in rematch matches after losing it.^[65]

Botvinnik was born into a Russian-Jewish family in Kuokkala (then part of the Grand Duchy of Finland within the Russian Empire, now Repino in Saint Petersburg, Russia), where his father worked as a dental technician.^{[2,8,187,359]} He began playing chess at the age of twelve—with Macedonian Wikipedia noting that he learned the game from his father—and rose so swiftly that by age fourteen he defeated the reigning World Champion José Raúl Capablanca in a simultaneous exhibition game, earning the title of master at sixteen. Botvinnik, an atheist, married Gayane (Ganna) Davidovna, an Armenian ballerina at the Moscow Bolshoi Theatre and the daughter of his algebra and geometry teacher, with whom he had a daughter named Olga in 1942.

Domestically, Botvinnik became a dominant force, winning the Soviet Championship either six times (in 1931, 1933, 1939, 1944, 1945, and 1952) or seven times (which includes the 1941 Absolute Championship of the USSR), and he was also Champion of Moscow in 1943/44.^[253] On the international stage, he shared first place with Capablanca ahead of Alexander Alekhine, Max Euwe, and Emanuel Lasker at Nottingham in 1936, placed third at the prestigious 1938 AVRO tournament in the Netherlands while defeating Capablanca, and won every single one of the eight tournaments he entered between 1941 and 1947. Although arrangements had been made for a World Championship title match against Alekhine, the contest was delayed by World War II and Alekhine died unexpectedly in 1946; FIDE subsequently organized the 1948 World Championship match-tournament in The Hague and Moscow, which Botvinnik won convincingly with 14 points (defeating Vasily Smyslov 3–2, Paul Keres 4–1, Samuel Reshevsky 3.5–1.5, and Max Euwe 3.5–1.5) to capture the world title by a 3-point margin. Botvinnik successfully defended his title by drawing 12–12 (5 wins, 5 losses, 14 draws) against David Bronstein in 1951 and by drawing 12–12 against Vasily Smyslov in 1954; he lost the crown to Smyslov in 1957 (9.5–12.5), but regained it in their guaranteed 1958 rematch (12.5–10.5); he then lost to Mikhail Tal in 1960 (8.5–12.5), but once again recaptured the title in their 1961 rematch (13–8). He permanently ceded the world championship after losing to Tigran Petrosian in 1963 (9.5–12.5); following FIDE's abolition of automatic rematch clauses, Botvinnik declined further participation in World Championship cycles, though he remained active in international tournament chess until retiring from competitive play in 1970.^[232] Across his career, Botvinnik won 33 of 59 tournaments outright and amassed 610 wins, 453 draws, and 139 losses in 1,202 official tournament and match games; representing the USSR at the Chess Olympiads from 1954 to 1964, he won six consecutive team titles, along with two individual gold medals and a total collection of eight golds, two silvers, and one bronze.

Universally revered as the "patriarch" and "father" of the Soviet chess school, Botvinnik transformed modern chess through a positional, strategic approach grounded in scientific methodology, exhaustive opening preparation, systematic study of opponents' weaknesses, physical conditioning, and rigorous self-critical game analysis published for open scrutiny.^{[188,189,239]} He founded and led the influential "Botvinnik Chess School", whose prominent students included future World Champions Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik (though Botvinnik initially saw no future in chess for a twelve-year-old Karpov).^[15,188,232] Botvinnik exerted major influence on the organization of chess, serving as Chairman of the All-Union Chess Section (1938–1939) and helping create the post-World War II World Chess Championship system and candidate selection framework adopted by FIDE.

Distinguished as one of the few elite grandmasters to maintain a successful second profession, Botvinnik was an electrical engineer, computer scientist, and professor who graduated in 1931, earned his Candidate of Technical Sciences degree in 1937 from the Leningrad Polytechnic Institute, and defended his Doctor of Technical Sciences dissertation in 1951 (or 1952).^{[13,8,124,187,190,191]} A pioneer of computer chess who retired from competitive play partly to focus on programming, he spent the last 25 years of his life developing chess software designed to simulate human thinking, formulated theories on the excitation control of synchronous machines, created maintenance algorithms for Soviet power plants, and championed the OGAS computerized network project in the 1980s.^[13,14,124]

Botvinnik was named a Grandmaster of the USSR in 1935 (or 1945 according to Kyrgyz Wikipedia) and was officially awarded the International Grandmaster title by FIDE in 1950 (though Georgian Wikipedia lists 1958), having also been made an Honoured Master of Sport of the USSR in 1945 and an international arbiter of chess composition in 1956.^[187,359] He achieved a peak historical rating of 2885 in October 1945 (standing as world No. 1 across 131 months between 1936 and 1958) and an official peak FIDE rating of 2660 (or 2630 in July 1971, ranking world No. 7), and was inducted into the World Chess Hall of Fame in 2003.^[11,1,192] Botvinnik was a prolific author of technical and chess works whose state decorations included the Order of Lenin (1957), Order of the October Revolution, Order of the Red Banner of Labour, Badge of Honour, Honoured Worker of Culture of the RSFSR (1971), Honoured Worker of Science and Technology of the RSFSR (1991), an honorary mathematics degree, and leadership as Chairman of the USSR–Netherlands Society from 1960.^[124] An active member of the Soviet Communist Party regarded by some as a Stalinist, Botvinnik died of pancreatic cancer on May 5, 1995, in Moscow (though Macedonian Wikipedia places his death in Saint Petersburg) and was buried in Moscow's Novodevichy Cemetery.^{[8,187,238,359]}

Mikhail Moiseyevich Botvinnik was born on August 17 (August 4 Old Style), 1911, into a Jewish family in the dacha settlement of Kuokkala in the Vyborg Governorate of the Grand Duchy of Finland within the Russian Empire (now the district of Repino in Saint Petersburg), where he spent his entire youth.^[16,35,3,34] His family had roots in Belarus, where his father, Moisey Girshovich (Leybovich) Botvinnik (1878–1931), was one of five sons in a Jewish peasant family.^[37,38] While some sources describe his father as a dental technician and a cantor (hazzan) in the local synagogue, others describe him as a dentist; his mother, Shifra (Serafima) Samoylovna Rabinovich, who also originated from Belarus, is listed as having been born in either 1876 or 1879 (dying in 1952), and worked as a dentist.^[37,307,38] Because of the parents' profession, the Jewish family was permitted to reside outside the Pale of Settlement to which most Jews in the Russian Empire were restricted.^[37,307,38] Mikhail grew up in a wealthy neighborhood at Nevsky Prospect No. 88 in Saint Petersburg with his parents and older brother Isaak ('Issy' or 'Iszja'), where prior to the 1917 revolution they lived in a large seven-room apartment with a cook and a maid.^{[36,40,39,354,355]} His father forbade the use of Yiddish at home, and Mikhail and his brother attended Soviet schools, receiving an upbringing that nurtured his intellectual abilities.^{[36,40,39,354,355]} Regarding his identity and beliefs, Botvinnik stated that he was an atheist and once explained: 'I am a Jew by blood, a Russian by culture, Soviet by upbringing.'^[35,41,358] After the October Revolution, in the years 1918–1919, the family lived in significantly more modest circumstances, and in 1920 his mother fell ill while his father left the family, although the father maintained contact with the children even after remarrying a Russian woman.^[31] His father paid a modest monthly alimony of 120 rubles, leaving Mikhail to attend school poorly dressed. At the age of nine, he began reading literature and newspapers, becoming a committed communist, later joining the Komsomol in 1931 (after becoming a candidate member in December 1926) and the Communist Party (VKP(b)) in 1940. As a boy, he skied, rode a bicycle, ate healthily, and established a daily exercise routine that he maintained throughout most of his life after his mother expressed concern about his poor physique.

In September 1923, at the age of twelve, Botvinnik was introduced to chess using a homemade set by his older brother's school friend Leonid Baskin, immediately developing a deep passion for the game, despite his mother's opposition.^{[8,17,40,188]} That autumn, he entered his first tournament at Leningrad School No. 157, finishing with roughly a 50% score, which led him to seek advice from another friend and conclude that he should formulate concrete concepts from which general principles could be derived.^[8] He studied extensively from chess books, newspaper columns, issues of Mikhail Chigorin's 'Shakhmatny Listok' from 1876–1877, and opening manuals by Nikolai Grekov and Vladimir Nenarokov.^[8] When Emanuel Lasker visited Leningrad on tour, Botvinnik recorded his games with personal commentaries, and in February 1924 he took part in a simultaneous exhibition against Lasker, having to leave the game after fifteen moves to return home. In winter and spring 1924, he won his school championship, after which he joined the Petrograd Chess Assembly by exaggerating his age by three years, a subterfuge overlooked by the assembly's president.^[8] Botvinnik won his first two tournaments organized by the Assembly and received his first public mention in the 19th issue of 'Shakhmatny Listok' in 1924 as the winner of an uncategorized tournament. The Assembly was soon replaced by a club at the city's Palace of Labour as Nikolai Krylenko began establishing a nationwide Soviet chess organization.

During 1925, Botvinnik progressed through the qualification ranks, winning three first-category tournaments by taking 23 out of 29 games and establishing the foundations of his positional style.^[6,8,316] His breakthrough onto the wider chess scene occurred on November 20, 1925, at age fourteen, when World Champion José Raúl Capablanca visited Leningrad on a rest day during the Moscow 1925 international tournament and gave a 30-board simultaneous exhibition at the Philharmonic hall, where Botvinnik defeated the champion.^{[17,43,40,193,355]} His rapid development was supported by coach Abram Model, who introduced him to the Winawer Variation of the French Defence, and he was also noticed and supported at a young age by Alexander Ilyin-Genevsky.^[44,43] In 1926, Botvinnik reached the final stage of the Leningrad championship after scoring 11½ out of 12 in the semi-final and winning his first five final games; sources disagree on whether he finished second outright or shared second and third places with Ilya Rabinovich. He also took bronze in the North-Western Regional Championship and was selected for Leningrad's team in an international match against Stockholm held in Sweden, scoring +1=1 (1½–½) against Gösta Stoltz, with sources differing on whether he played on board 5 or board 6. Upon returning, he entertained his classmates with an account of the rough sea voyage, and after being commissioned to annotate two games from the match, he began regular commentary activities, which instilled in him a strict commitment to analytical objectivity.

At the 1927 USSR Championship in Moscow, Botvinnik debuted as the youngest competitor in the tournament's history up to that point; while some accounts report he placed fifth, others record that he tied for 5th–6th places (scoring 12.5 out of 20 alongside Vladimir Makogonov), exceeding the master norm by 2.5 points and earning the title of Soviet national master.^{[8,24,195,256,116,42,43]} Because he was below the minimum age for higher education entrance examinations after finishing school, he waited until 1928 to pass examinations to study Electrical Technology at the Leningrad Polytechnic Institute; after initial restrictions by the Proletstud favoring children of industrial workers, an appeal by a local chess official secured his entry into Leningrad University's Mathematics Department.^[42,355] In January 1929, he played for Leningrad against Moscow in the student team chess championship, leading to a victory that enabled the team manager (who served as deputy chairman of Proletstud) to arrange Botvinnik's transfer to the Polytechnic Institute's Electromechanical Department as one of only four direct entrants from school.^[255,355] Due to the transfer, Botvinnik had to compress a full year's coursework into five months and failed one examination; he completed his electrical engineering degree at the Polytechnic Institute in late summer 1931 and subsequently pursued doctoral studies there.^[116] At the 6th USSR Championship in Odessa in 1929, played under a multi-stage format, Botvinnik scored 7/8 in his quarter-final group but placed third in his semi-final, narrowly missing the final and finishing tied for 5th–6th overall.^[43,227] He achieved a major domestic breakthrough by winning the Leningrad Masters tournament in 1930 with 6½/8, and followed it up at the turn of 1930/1931 by winning the Leningrad Championship by 2½ points over former Soviet champion Peter Romanovsky.^{[45,43,41,196,227]} In 1931, at age 20, Botvinnik won the 7th USSR Championship in Moscow with a dominant two-point margin (scoring 13½ out of 17), won two subsequent Leningrad master tournaments in 1932/33 and 1933, and captured the Soviet Championship again in 1933 in Leningrad with 14 points out of 19.^{[21,255,257,260]} Shortly thereafter, Alexander Ilyin-Genevsky arranged a match between Botvinnik and Salo Flohr; trailing by two points after the Moscow leg, Botvinnik leveled the match in Leningrad with the assistance of Abram Model and Vyacheslav Ragozin to finish in a draw, later recalling that he danced the foxtrot and Charleston like a professional at the closing banquet.^[255,197]

In 1935, Botvinnik married Armenian-born Gayane Davidovna Ananova, the daughter of his algebra and geometry teacher, who studied at the Vaganova Academy of Russian Ballet and later danced with the Bolshoi Theatre; the couple had a daughter, Olga, born in 1942.^[46] Later in his career, he won further Soviet national championships in 1939, 1941, 1945, and 1952, and achieved major international successes including joint first with Flohr at Moscow 1935 ahead of Lasker and Capablanca, joint first with Capablanca at Nottingham 1936, third behind Reuben Fine and Paul Keres at the AVRO 1938 tournament, and first place in the 1941 tournament earning him the title of 'absolute champion of the USSR' with victories over Keres, Vasily Smyslov, Isaac Boleslavsky, and Andor Lilienthal.

Mikhail Botvinnik was born on August 17, 1911 (August 4 Old Style) in Kuokkala (today Repino, near Saint Petersburg), then part of the Grand Duchy of Finland within the Russian Empire.^{[3,159,8,307,308,309,306]} He came from a Russian-Jewish family; his father Moisey Girshovich (Leybovich) Botvinnik (1878–1931) was a dental technician, and his mother Shifra (Serafima) Samoylovna Rabinovich (born in either 1876 or 1879, died 1952) was a dentist, though one source notes both parents were dentists.^[3,37,160] His maternal grandfather, Samuils Rabinovičs (1845–1916), was a rabbi in Krāslava and represented the Russian Insurance Company there.^[296] Because of his parents' professions, the family was permitted to live outside the Pale of Settlement, allowing Botvinnik to grow up on Nevsky Prospekt in Saint Petersburg.^{[37,160,309,8,310]} His father forbade speaking Yiddish at home, and Mikhail and his older brother Isaak ("Issy" / "Isya") attended Soviet schools.^[8] In 1920, his mother fell ill and his father left the family, though the father remained in contact with the children even after his second marriage; during this period, Mikhail took an interest in journalism, became a communist from his youth, and described himself as an atheist.

While one source states he learned chess at age fourteen, most sources indicate he was introduced to the game at age twelve in autumn (September) 1923 by a schoolmate of his older brother using a homemade set at Leningrad Secondary School No. 157, quickly falling in love with the game.^[3,8] His first instructor was Abram Model, though unlike many grandmasters he largely studied without a regular teacher, reading chess books and analyzing his own games. After finishing mid-table in a school championship, he consulted his brother's friend and realized he should think in "concrete concepts" before deriving general rules, quickly defeating that same friend. His mother disapproved of his infatuation with chess, asking if he wanted to become like Capablanca, but Botvinnik progressed rapidly, winning his school championship in the winter of 1924 and being mentioned in the magazine Chess Sheet after winning an out-of-category event. He exaggerated his age by three years to gain entry into the Petrograd Chess Assembly (where the president turned a blind eye), won his first two tournaments there, and later joined the successor club at the Palace of Labor organized under Nikolai Krylenko. He gained widespread attention at age fourteen by defeating World Champion José Raúl Capablanca in a simultaneous exhibition in 1925 (or in Moscow on November 20, 1924, according to one account).^[3,162,313] In 1925, he won three first-category tournaments and scored 11.5 out of 12 points in the Leningrad Championship semifinals, later sharing 2nd–3rd place in the final and earning a spot on the Leningrad team that played against Stockholm in 1926, where he scored +1 =1 against Gösta Stoltz.^[2] In December 1926, he joined the Komsomol, and because his mother worried about his frail health, he adopted a daily physical exercise routine that he maintained throughout his life. At age 16 in 1927, he made his debut at the 5th USSR Championship in Moscow, sharing 5th–6th place with Vladimir Makogonov, which exceeded the national master norm by 2.5 points and made him the youngest Soviet master up to that time.^[2]

Botvinnik entered the Leningrad Polytechnic Institute to study electrical engineering, graduating in 1931; during these student years, he played less frequently but won trade union championships, participated in the 6th USSR Championship in 1929, won the 8th Leningrad Championship in 1930, and triumphed at a tournament of Leningrad masters in autumn 1930.^[161] In 1931, at the age of 20, he won the 7th USSR Chess Championship for the first time in Moscow with 13.5/17 points (though Botvinnik later remarked that pre-revolutionary masters were absent), going on to defend his title in Leningrad in 1933 with 14/19 points.^[19,161] In total, he won the Soviet Championship six times across eight participations (in 1931, 1933, 1939, 1945, 1952, and either 1941 or 1944 depending on the source; in 1941 he won the tournament establishing him as "absolute champion of the USSR" ahead of Keres, Smyslov, Boleslavsky, and Lilienthal).^[17,242] As the acknowledged leader of Soviet chess, he drew a 12-game match (+2 -2 =8, 6:6) against Czech master Salo Flohr in late 1933, won a master tournament in Leningrad ahead of Max Euwe and Hans Kmoch, and placed tied for 5th–6th with 5/9 at Hastings 1934–35 in his first tournament outside the USSR. In 1935, at the 2nd Moscow International Tournament, he tied for 1st–2nd place with Salo Flohr ahead of Emanuel Lasker and José Raúl Capablanca, and in 1936 he finished 2nd behind Capablanca at the 3rd Moscow Tournament.^[311] At the historic Nottingham 1936 tournament, he shared 1st–2nd place with Capablanca ahead of Alexander Alekhine, Max Euwe, Reuben Fine, and Lasker, sparking a Soviet ideological campaign that portrayed his individual success as a triumph of the Soviet chess system and Communist Party leadership under Stalin.^[311] In 1937, Botvinnik skipped the USSR Championship to defend his Candidate of Sciences dissertation, but arranged a match against two-time national champion Grigory Levenfish (+5 -5 =3) where Levenfish retained his title on a drawn score. Soviet authorities selected Botvinnik over Levenfish to play in the prestigious 1938 AVRO tournament in the Netherlands, where he finished 3rd behind Paul Keres and Reuben Fine, but ahead of Alekhine, Samuel Reshevsky, Euwe, Capablanca, and Flohr, defeating both Capablanca and Alekhine in individual games.^[311] Botvinnik challenged reigning World Champion Alexander Alekhine, and negotiations were well advanced after Alekhine accepted, but the match was prevented by the outbreak of World War II and later by Alekhine's death in 1946.

Following Alekhine's death, FIDE decided at its Winterthur Congress to stage a quintuple round-robin World Championship tournament in The Hague and Moscow in 1948 among five top players: Mikhail Botvinnik, Vasily Smyslov, Paul Keres, Samuel Reshevsky, and Max Euwe (Reuben Fine having declined his invitation for professional reasons).^[246] Botvinnik dominated the 1948 tournament, scoring 14 points (10 wins, 8 draws, 2 losses) to finish three points ahead of second-placed Smyslov and become the sixth official World Chess Champion.^[246] Under new FIDE regulations mandating title defenses every three years, Botvinnik retained his world crown in 1951 (or 1950 according to one source) against David Bronstein with a 12–12 draw (+5 -5 =14), and again in 1954 against Vasily Smyslov with a 12–12 draw (+7 -7 =10).^[249] In 1957, Botvinnik lost the World Championship to Smyslov (9.5–12.5), but invoked his right to a return match in 1958 and reclaimed the title by a score of 12.5–10.5 (or 12.5–11.5). In 1960, he lost the title to Mikhail Tal (8.5–12.5), but won the rematch in 1961 (13–8) to regain the crown once more, making him the only world champion to reclaim the lost title twice.^[247] In 1963, Botvinnik lost to Tigran Petrosian (9.5–12.5), and because FIDE had abolished the direct rematch rule—requiring former champions to qualify through the Candidates cycle—he retired permanently from World Championship competition.^[248,249] Across seven 24-game World Championship matches, Botvinnik retained the title in two drawn defenses and lost the other three, winning only his two rematch challenges.^[249,245]

Beyond championship matches, Botvinnik won numerous major tournaments, taking clear first place at Groningen 1946, Moscow 1947, Hastings 1961/62 and 1966/67, Amsterdam 1963 and 1966, and Noordwijk 1965. He represented the Soviet Union at six Chess Olympiads between 1954 and 1964 (playing first board four times), winning six team gold medals and five individual medals (two gold, one silver, two bronze), and played in two European Team Championships (1961 and 1965).^[243] In the 1962 Olympiad, he played his only recorded game against American Bobby Fischer, defending a difficult position to salvage a draw; Fischer claimed he could defeat Botvinnik and deserved to be champion, though no further match ever occurred. In the 1970 "USSR vs. Rest of the World" Match of the Century, Botvinnik defeated Milan Matulović (+1 -0 =3) on board eight, ending his active competitive playing career that same year.

Botvinnik's approach transformed chess through rigorous analytical preparation, strategic planning, physical fitness regimens, and detailed dossiers on his opponents' strengths and weaknesses. His playing style was characterized by deep strategic concepts, tactical sharpness, endgame mastery, and meticulous handling of time. To adapt to challenging conditions, he even practiced games in rooms filled with tobacco smoke despite being a non-smoker. He developed a compact but deeply analyzed opening repertoire, contributing significantly to the Nimzo-Indian Defence, Slav Defence, the Winawer Variation of the French Defence, and the Caro–Kann (including the Botvinnik–Panov Attack). For major contests, he trained in secret matches with leading masters such as Viacheslav Ragozin (who served as his longtime coach), Salo Flohr, and Yuri Averbakh, while commentators debated whether his dominance reflected innate genius or comprehensive state support and teamwork.

Alongside his chess achievements, Botvinnik pursued a distinguished career in electrical engineering, obtaining his doctorate between 1948 and 1951 (causing a three-year hiatus from chess) and receiving state decorations for his scientific work. After retiring from competitive chess in the 1960s, Botvinnik devoted himself to computer chess programming, authoring two books on the subject, advising the Institute for Theoretical and Experimental Physics (ITEP) team in their match against Alan Kotok's program from the United States, and participating in the development of the pioneer program Kaissa, which won the first World Computer Chess Championship in Stockholm in 1974. He predicted that computers would eventually become world chess champions, and unsuccessfully proposed using artificial intelligence to manage the Soviet planned economy, a proposal the Communist Party leadership considered disciplining him over before relenting due to his stature.^[250,251] He founded and led a renowned chess school (originally established in 1963 by Grigory Goldberg and revived in 1969, later known as the Botvinnik–Kasparov School), mentoring generations of elite players including World Champions Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik, as well as grandmasters like Nana Ioseliani.^[174] Botvinnik's autobiography, K Dostizheniyu Tseli, appeared in Russian in 1978 and was published in English translation in 1981 as Achieving the Aim; many of his chess analyses were published posthumously. A lifelong communist who was deeply distressed by the collapse of the Soviet Union, Botvinnik died of pancreatic cancer in Moscow on May 5, 1995, and was buried in Novodevichy Cemetery.^[92]

Mikhail Botvinnik learned chess at age twelve, first gained prominence at age fourteen by defeating José Raúl Capablanca in a simultaneous exhibition, and later graduated in late summer 1931 with a degree in electrical engineering, having already held the Soviet Master title for several years before winning his first Soviet Championship in Moscow in 1931 with a score of 13½/17 and repeating the victory in Leningrad in 1933 with 14/19.^[48] At that time, as his longtime friend Salo Flohr noted, chess life in the USSR had experienced a standstill since Moscow 1925, with almost no foreign contact or accessible literature reaching the West due to the language barrier, though Western masters still recognized the high quality of Botvinnik's play in domestic events.^[22] To strengthen his international standing, Flohr arranged a match against Botvinnik in late 1933 through Alexander Ilyin-Genevsky, a Soviet master and diplomat in Prague; after falling two games behind during the first six games held at the Column Hall of the Moscow House of the Unions, Botvinnik, assisted by his second Viacheslav Ragozin and coach Abram Model, leveled the score during the second half at the Leningrad Observatory to finish in a 6:6 draw across 12 games, attracting worldwide media coverage and demonstrating his elite caliber.^[355]

In 1934, Botvinnik won a strong tournament in Leningrad (+5 -1 =5) ahead of future world champion Max Euwe despite suffering from illness and losing to Georgy Lisitsin, defeating Grigory Rabinovich in the final round after a ten-hour game and earning public acclaim from the Soviet press. Later that winter, he made his international debut outside the USSR at the 1934–35 Hastings Christmas tournament, but suffered from difficult schedules and insufficient acclimatization, scoring only 5/9 (+3 -2 =4) to share fifth and sixth places; Emanuel Lasker advised him that arriving just two hours prior was a mistake and that ten days were needed for acclimatization, an error Botvinnik vowed never to repeat.^{[258,205,259,355,235]} Botvinnik's staunch communist convictions and competitive achievements earned him extensive patronage from high-ranking Soviet officials, particularly Nikolai Krylenko, who provided him with developmental privileges including an automobile. Botvinnik redeemed his Hastings setback at the 2nd Moscow International Tournament in 1935, sharing first place with Flohr with a score of 13/19 (+9 -2 =8), finishing half a point ahead of Lasker and one point ahead of Capablanca. Following discussions with Capablanca and Lasker, Krylenko offered Botvinnik the grandmaster title, which Botvinnik declined on the grounds that titles were not his primary objective, though he accepted gifts from the People's Commissariat of Heavy Industry consisting of a car and a 67% increase in his stipend; in 1935 he also married the Kirov ballerina Gayane Ananova. At the even stronger double-round 3rd Moscow International Tournament in June 1936, Botvinnik finished second (+7 -1 =10), 2½ points ahead of Flohr and one point behind Capablanca after losing their individual game due to time trouble.

At the Nottingham tournament in 1936, endorsed by Krylenko despite skepticism from domestic rivals, Botvinnik shared undefeated first prize (+6 =8) with Capablanca, scoring 10/14 and finishing ahead of World Champion Max Euwe, Reuben Fine, Samuel Reshevsky, and Alexander Alekhine.^[255,46,235] Representing the first international tournament victory by a Soviet player abroad, this triumph earned Botvinnik the Soviet Order of the 'Mark of Honour' and solidified his position among the global elite as a top contender for the World Championship.^[235] Botvinnik completed and successfully defended his Candidate's thesis at the Leningrad Polytechnic Institute before the Electromechanical Faculty in July 1937, causing him to miss the USSR Championship in Tbilisi.^[23,298] In late 1937, to establish the country's top player, Krylenko organized a match between Botvinnik and the reigning Soviet champion Grigory Levenfish; the 13-game contest, played under a first-to-six-wins rule where Levenfish retained the title on a tie, ended in a 6.5–6.5 draw.^[235] During that match, Botvinnik's childhood friend Sergei Kaminer unexpectedly entrusted him with a notebook containing his chess studies, which Botvinnik preserved even after Kaminer was executed on November 2, 1938 during the Great Terror, eventually revealing the notebook in the 1950s and publishing its material in a 1982 chess book.^[24,299]

In 1938, the Dutch radio network AVRO hosted an elite eight-player double round-robin tournament designed as a trial to select a challenger for World Champion Alexander Alekhine, with Botvinnik selected to participate by Soviet authorities over national champion Levenfish.^[50,51,54] Botvinnik placed third (+3 -2 =9) behind Paul Keres and Reuben Fine, but finished ahead of Max Euwe, Samuel Reshevsky, Salo Flohr, and former champions Alekhine and Capablanca, defeating Capablanca in their famous final encounter.^[55,209] Following the AVRO tournament, Botvinnik discreetly approached Alekhine regarding a World Championship match; Alekhine accepted the challenge, and funding and authorization were approved by Soviet authorities in early 1939, but the outbreak of World War II prevented the match from occurring.^{[52,56,54,43,208,209]}

In spring 1939, Botvinnik won the USSR Championship undefeated, beating Alexander Kotov in the decisive game, and subsequently published an analytical book outlining his preparatory methods focused on building permanent positional advantages in the middlegame.^[57,48] In 1940, Botvinnik defeated Viacheslav Ragozin in a twelve-game match with 5 wins and 7 draws. In the USSR Championship held in Moscow—dated to 1940 in English and Slovak accounts but to 1941 in Russian sources—Botvinnik struggled in the noisy, smoke-filled venue and faded to a shared fifth place (tied with Isaac Boleslavsky) behind co-winners Igor Bondarevsky and Andor Lilienthal. To determine an undisputed challenger for Alekhine's world title, Soviet officials arranged a quadruple round-robin match-tournament in Leningrad and Moscow in 1941 for the title of 'Absolute Champion of the USSR', which Botvinnik won with plus scores against all rivals—including Paul Keres, Vasily Smyslov, Isaac Boleslavsky, Bondarevsky, and Lilienthal—after preparing in noisy, smoky training conditions with Ragozin.^[58]

When Nazi Germany invaded the Soviet Union in June 1941, Botvinnik was declared unfit for military service due to poor eyesight and was evacuated with his wife and the Kirov Ballet to Molotov (Perm), where he worked as an electrical engineer in defense manufacturing at the lowest pay rate.^[65,60] In Perm, his daughter Olya was born in April 1942, and he spent his evenings annotating the games of the 1941 Absolute Championship into a celebrated book, eventually receiving an order from Vyacheslav Molotov in January 1943 granting him three days off normal work to study chess.^[111] Returning to competitive play in 1943 after a two-year hiatus, Botvinnik won the strong Sverdlovsk masters tournament undefeated (+7 -0 =7), scoring 1½ out of 2 against all seven opponents, including Smyslov, Vladimir Makogonov, Boleslavsky, and Ragozin.^[43] Later in 1943, Botvinnik relocated to Moscow and won the Moscow Championship (+11 -1 =3) ahead of Smyslov, though his proposal to arrange a match with Samuel Reshevsky received no political backing.

Botvinnik captured further Soviet Championships in 1944 (defeating Smyslov mid-tournament) and in 1945—where he finished undefeated, three points ahead of Boleslavsky, with his dominant final score recorded as 16/18 in Indonesian sources and 15/17 in Simple English accounts—bringing his career total to six titles, later tied by Mikhail Tal.^[48] Following the war, Botvinnik officially renewed his challenge to Alekhine, and negotiations were underway through the British Chess Federation to stage the match in England in 1946, but the match was cancelled upon Alekhine's sudden death in March 1946.^[61,66] In 1946, Botvinnik scored his first outright international tournament victory outside the USSR at the Groningen Staunton Memorial, finishing first with 14½/19, half a point ahead of Max Euwe and two ahead of Smyslov.^{[63,64,65,62]} He followed this with a victory in the Mikhail Chigorin Memorial in Moscow in 1947. Botvinnik went on to claim the vacant World Championship title in the 1948 The Hague/Moscow match-tournament, inaugurating decades of Soviet dominance in world chess.^[66]

In 1938, during the AVRO tournament, Mikhail Botvinnik contacted World Champion Alexander Alekhine to arrange a title match, but World War II prevented the contest from taking place. Following victories in major national championships and team radio matches against the United States in 1945 and Great Britain in 1946, Botvinnik demonstrated his readiness to contest the world title. In February 1946, Botvinnik sent a letter to Alekhine renewing his challenge and requesting to set the venue and date, while Bulgarian sources note he obtained permission from the Kremlin in March 1946 to negotiate a match with the "enemy of the people." Although Alekhine began preparations and the British Chess Federation proposed London as the host city on March 23, 1946, Alekhine died unexpectedly at the age of 53 on March 24, 1946, leaving the chess world without a reigning champion for the first time since Wilhelm Steinitz. In 1946, Botvinnik won the Groningen tournament ahead of Max Euwe, after which chess author Fred Reinfeld noted that the entire chess world regarded Botvinnik as having all the attributes of a world champion. In August 1947, at the 18th FIDE Congress in The Hague, the Soviet Chess Federation joined FIDE, and the governing body decided to organize a World Championship match-tournament among six invited grandmasters: Botvinnik, Vasily Smyslov, Paul Keres, Samuel Reshevsky, Max Euwe, and Reuben Fine. After Fine declined his invitation, a five-player competition of five cycles—with each participant playing 20 games—opened in The Hague on March 2, 1948, and concluded in Moscow on May 16, 1948. Having also won the Chigorin Memorial before the tournament, Botvinnik led from the early rounds, won all of his individual mini-matches (including a 4–1 record against Keres), and won first place with 14 out of 20 points—three points ahead of Smyslov—to become the sixth World Chess Champion at the age of 36.^{[10,9,68,207,261]} Botvinnik was officially proclaimed World Champion on May 18 in a victory celebrated as a triumph for the Soviet chess school, though master Leonard Barden later asserted that Keres's return to chess had required an obligation not to obstruct Botvinnik's path to the championship.^[315] While Botvinnik was subsequently resting on vacation in Riga, eleven-year-old Mikhail Tal visited hoping to play a game against him, but was turned away by Botvinnik's wife, who explained that the new champion was asleep and resting from chess.^[94,59,69]

In 1950, Botvinnik became one of the inaugural recipients of the international grandmaster title awarded by FIDE. Botvinnik helped design the World Championship qualifying and match system that governed title contests from 1948 to 1963, which incorporated zonal, interzonal, and Candidates tournaments, culminating in a 24-game match where a 12–12 tie allowed the reigning champion to keep the title.^{[203,206,66,356]} While some sources record that the rules adopted after 1948 already granted a defeated champion the right to a rematch, other accounts state that FIDE amended the championship regulations to grant this rematch privilege in 1956. Botvinnik's tenure on the chess throne lasted 15 years with two brief interruptions, during which he contested seven championship matches and is described by sources as being World Champion three times (1948–1957, 1958–1960, and 1961–1963) or becoming champion five times. Critics pointed to Botvinnik's sparse post-war tournament appearances and his record in title defenses—drawing two and losing three while winning two matches as a challenger—though his sustained success was anchored in exhaustive opening preparation, endgame technique over tactics, and opening repertoires in the Nimzo-Indian, Slav, and Winawer French defences refined in secret training matches with Salo Flohr, Yuri Averbakh, and Vyacheslav Ragozin. His uneven match results were often explained by World War II breaking out at the peak of his career, the FIDE mandate forcing him to play the world's strongest challengers every three years rather than avoiding opponents like earlier champions such as Emanuel Lasker, and his parallel career as an electrical engineer, for which he received multiple Soviet state decorations.

After winning the world title in 1948, Botvinnik did not play competitive chess for three years while working on his doctoral dissertation, "Regulation, Excitation and Static Stability of a Synchronous Machine", which he successfully defended in 1951 at the G. M. Krzhizhanovsky Power Engineering Institute to become a Doctor of Technical Sciences.^[47,80] In his 1951 World Championship match against David Bronstein in Moscow, Botvinnik showed the effects of his three-year absence from competitive play and trailed Bronstein near the finish, but won the 23rd game and drew the 24th to finish tied 12–12 (+5 −5 =14), successfully retaining the world title.^{[70,67,255,268,48,269,69,78]} Botvinnik struggled in subsequent events, placing fifth in the 1951 Soviet Championship and tying for third at the 1952 Géza Maróczy Memorial in Budapest; when the Soviet team for the 1952 Helsinki Olympiad voted to place Keres on first board and Botvinnik on second board, Botvinnik protested and refused to play, leading to his replacement by Efim Geller.^{[47,80,48,78,356]} Later in 1952, Botvinnik shared first place with Mark Taimanov at the 19th Soviet Championship and won their playoff match to become a seven-time USSR Champion, later sharing first with Smyslov at the 1956 Alekhine Memorial and leading the Soviet team on top board to gold medals at the 1954 and 1956 Olympiads.^[47,82] In 1954, Botvinnik defended his title in Moscow against challenger Vasily Smyslov in an oscillating match that ended in another 12–12 draw (+7 −7 =10), allowing Botvinnik to retain the championship.^[71,255,70]

In 1957, Smyslov challenged Botvinnik a second time in Moscow and defeated him 12½–9½ (+6 −3 =13), claiming the World Championship title.^{[5,74,255,73,71,72]} Exercising the rematch clause nine months later, Botvinnik prepared intensively and defeated Smyslov—who was suffering from the flu and pneumonia during the match—by a score of 12½–10½ (+7 −5 =11) in Moscow in 1958 to regain the World Championship title.^{[5,74,48,262,73,71,72]}

In 1960, Botvinnik faced 23-year-old Mikhail Tal in Moscow and lost his crown after being defeated 12½–8½ (+6 −2 =13).^[5,76,73,75] In the 1961 return match in Moscow, the 50-year-old Botvinnik altered his style to avoid tactical complications and guide play toward closed positions and endgames, convincingly defeating Tal—who struggled with health problems—by a score of 13–8 (+10 −5 =6) to reclaim the title.^{[5,9,76,73,77,78,265,75]}

Between 1958 and 1962, Botvinnik also won tournaments at Wageningen (1958), the Spartakiad of the Peoples of the USSR (1959), Hastings and Stockholm (1961–1962), Olympiad gold medals in 1958 and 1960, and played a famous endgame against Bobby Fischer at the 1962 Varna Olympiad. In 1963, Botvinnik defended his title against Tigran Petrosian at the Moscow Estrada Theatre and lost the match 12½–9½ (+5 −2 =15).^[79,77] Because FIDE had abolished the rematch provision—which had been nicknamed the "Botvinnik rule" due to his two successful rematches—Botvinnik could not demand a return match, and he declined to enter the 1965 Candidates cycle despite having direct qualification rights.^[266] At the closing of the 1963 match, Petrosian stated that he considered all contemporary masters to be students of Botvinnik, who stands as the only player in chess history to regain a lost World Championship title twice.^[9] Botvinnik retired from competitive chess in 1970, established a prominent chess school that trained future world champions Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik, and devoted himself to developing computer chess algorithms.^[9] He continued playing until the age of 72, leaving a competitive record from 1924 to 1983 of 1,192 games (1,180 in official play with 570 wins, 469 draws, and 141 losses for an 804.5/1180 score or 68.2%), before passing away in Moscow on May 5, 1995.

In 1963, Mikhail Botvinnik lost the World Championship title for the final time to Tigran Petrosian in Moscow by a score of 9.5 to 12.5. Following the defeat, Botvinnik felt a weight fall from his shoulders and chose to withdraw from subsequent World Championship cycles, especially after FIDE abolished the rule granting a defeated champion the automatic right to a rematch at its 1965 annual congress despite his criticism. Nevertheless, he remained active in competitive chess for several years, competing in high-ranking tournaments once or twice a year and continuing to produce memorable games. During the 1960s, his tournament victories included Hastings in 1961–1962 (+7 =2), Stockholm in 1962 (scoring 8.5/9 with +8 =1 and a three-point lead), the GAK tournament in Amsterdam in 1963 (4/5 with +3 =2), the Noteboom Memorial in Noordwijk in 1965 (6/7 with +5 =2), the IBM tournament in Amsterdam in 1966 (7.5/9 with +7 -1 =1), Hastings in 1966–1967 (+5 -1 =3), and Beverwijk (Wijk aan Zee) in 1969 (+6 =9, tied for 1st–2nd place). He also placed second tied with Vasily Smyslov (or shared 2nd–3rd) behind Bent Larsen at Palma de Mallorca in 1967, finished second in Monte Carlo in 1968, and took 7th place in Belgrade in 1969. In team competitions, he won the individual gold on board two at the 1964 Chess Olympiad, and in 1966 he played first board for the Trud team in the USSR Team Cup, winning his first five consecutive games against opponents including Smyslov, Paul Keres, and Boris Spassky.

In 1969 at Beverwijk, Dutch sponsors proposed a match between Botvinnik and the American Bobby Fischer, for which Botvinnik prepared until September 1969; however, the match collapsed because Fischer demanded playing until one player reached six wins, whereas Botvinnik insisted on limiting the contest to 18 games due to his age, prompting Botvinnik to remark that Fischer could have learned a lot from him.^[26,300] In 1970, Botvinnik competed on the eighth board in the 'Match of the Century', defeating Milan Matulović 2.5 to 1.5. His final competitive tournament was Leiden in 1970, where German and Low German accounts describe him as tying for third behind Boris Spassky and Bent Larsen, while Russian, Lithuanian, and Slovak sources report that he shared 3rd–4th place with Larsen, whom Botvinnik defeated positionally while avoiding complications. Botvinnik retired from competitive chess in 1970 at the age of 59, deciding to end his career following the cancellation of the Fischer match and stating that he would no longer create beautiful games or slap pieces across the board.^[357]

Over the course of his competitive tournament career, Botvinnik played infrequently on the international stage, with earlier results including 1st place at Groningen (1946), 1st at the Chigorin Memorial in Moscow (1947), 3rd–5th at the Maróczy Memorial in Budapest (1952), 1st–2nd at the Alekhine Memorial in Moscow (1956), and 1st at Wageningen (1958). In total, he took part in 59 tournaments, taking first place in 33 of them, sharing 1st–2nd place in six, and sharing 2nd–3rd place in 14, while winning six matches out of 13, losing three, and drawing four. Across all competitions, Botvinnik played 1,202 games and scored nearly 70% of possible points. He won the Soviet Championship a total of six times—in 1931, 1933, 1939, 1941, 1944, 1945, and 1952 (where he tied with Mark Taimanov and won a playoff match)—a record shared with Mikhail Tal.^[270] Botvinnik represented the USSR in six Chess Olympiads, playing on the first board four times and on the second board twice (in 1960 and 1964), though he refused to play for the gold-medal winning team at the 1952 Helsinki Olympiad when team members voted to assign Paul Keres to first board and Botvinnik to second board.

After retiring from active play, Botvinnik focused on training young Soviet players and researching the theoretical questions of computer chess programming, creating the powerful chess program 'Pioneer'.^[357] His dedicated coaching earned him the nickname 'Patriarch of the Soviet Chess School', with his students including the famous '3Ks': Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik, among many future grandmasters. Kasparov was especially close to him, depicting him as a father figure across several pages in his 2004 book On My Great Predecessors II, which highlighted Botvinnik's warm, human side in contrast to his commonly described cold and strict exterior. In the 1980s, Botvinnik proposed a computer software program to manage the Soviet economy, though his ideas received little attention from Soviet authorities.^[120] During his final years, he personally financed this economic computer project from lecture and seminar earnings, hoping it would be implemented to manage the Russian economy, and continued working actively on it despite serious health issues, although no significant results emerged from his software projects.

Botvinnik's autobiography, K Dostizheniyu Tseli (Towards the Goal), was published in Russian in 1978 and translated into English in 1981 under the title Achieving the Aim (ISBN 0-08-024120-4). A devoted and staunch Communist, Botvinnik was deeply shaken by the collapse of the Soviet Union and lost his official standing in Russian chess during the Boris Yeltsin era. In his advanced years, Botvinnik became blind in one eye and retained very poor vision in the other, but according to his daughter, he remained active and continued going to work until March 1995. Botvinnik died of pancreatic cancer in his apartment on Frunzenskaya Embankment in Moscow on May 5, 1995.^[84] According to his nephew, Botvinnik died fully conscious with courage and dignity, having given detailed instructions on the eve of his death for his funeral arrangements; accordingly, no memorial service took place, and Vasily Smyslov was the only prominent chess player to attend. In accordance with his will, his body was cremated, and his urn was interred in the columbarium of Novodevichy Cemetery beside his wife, ballerina Gayane Davidovna Ananova.^[85]

During the first participation of a Soviet team at a Chess Olympiad in 1952, Botvinnik was left out of the squad, but he was selected for six Olympiads from 1954 to 1964 inclusively, helping the USSR win the team gold medal in all six appearances. At Amsterdam 1954, he played on board one, scoring 8½/11 (+6 =5 -0) to win individual gold. At Moscow 1956, he again played on board one and scored 9½/13 (+6 =7 -0), earning an individual bronze medal according to English Wikipedia or an individual silver medal according to French and Hebrew Wikipedia. At Munich 1958, he scored 9/12 (+7 -1 =4) on board one, winning an individual silver medal according to English Wikipedia or a bronze medal according to French and Hebrew Wikipedia. At Leipzig 1960, having lost his world title to Mikhail Tal earlier that year, he played on board two behind Tal and won the board gold medal with 10½/13 (+8 =5 -0). Back on board one for Varna 1962, he scored 8/12 (+5 -1 =6), finishing sixth and failing to win an individual medal for the only time in his Olympiad career. In his final Olympiad at Tel Aviv 1964, playing on board two after losing his title to Tigran Petrosian, he scored 9/12 (+7 -1 =4) to win the individual bronze medal. Across his six Olympiads, Botvinnik compiled an overall record of 54½/73 (+39 =31 -3) for a 74.6 percent score.^[83]

Botvinnik also represented the USSR in two editions of the European Team Championship, with the Soviet team winning gold on both occasions. At Oberhausen 1961, he played on board one and won the individual gold medal with 6/9 (+4 -1 =4). At Hamburg 1965, he struggled on board two, scoring 3½/8 (+2 -3 =3) and losing his last three games; this negative score resulted in him not being selected again for the Soviet team in Olympiads or European Championships. In addition, Botvinnik represented the USSR in three international matches against the United States in 1946 and 1955, as well as in the 1970 Match of the Century. In one of the final events of his career, a few months before retiring, he played on the eighth board at the 1970 USSR vs. Rest of the World match in Belgrade, defeating Milan Matulović in their individual match with 2½/4 (+1 -0 =3) as the Soviet team narrowly triumphed.

Among the greatest qualities universally recognized in Botvinnik as a chess player were his precision, depth of strategy, deep understanding of positions, and ability to analyze and comprehend opponents' playing styles.^[327] His style was largely influenced by Mikhail Chigorin and José Raúl Capablanca, whose games he began studying at the age of thirteen.^[8] In the first years of his career, he played predominantly positional chess, but his game later changed considerably; he was also able to play actively and offensively, making his style universal. Belonging to the scientific school of chess traced by Wilhelm Steinitz and Capablanca, Botvinnik evolved the philosophy of the game through his great diligence, determination, self-discipline, and rigor, conceiving chess as a true sport.^[241] Regarded as probably the best chess analyst of his time, he based many of his successes on thorough analyses of played games and preparation, and he demonstrated these analytical skills in the many chess books he wrote. Vladimir Kramnik remarked that "Botvinnik's chess career was the way of a genius, although he was not a genius", reflecting that Botvinnik was brilliant at making the best use of his talents.^[291]

Botvinnik's example and teaching established the modern approach to competitive preparation: regular but moderate physical exercise; very thorough analysis of a relatively narrow repertoire of openings; annotating one's own games as well as those of past greats and competitors; publishing annotations so others could point out errors; studying opponents to discover their strengths and weaknesses; and maintaining ruthless objectivity about one's own strengths and weaknesses.^[106,107] He also played many short training matches against strong grandmasters—including Salo Flohr, Yuri Averbakh, Viacheslav Ragozin, and Semion Furman—frequently holding them in noisy or smoky rooms if he anticipated facing such conditions during actual competition.^[3] Largely thanks to Botvinnik, this new scientific approach to preparation and training took hold in the Soviet Union, defining the "Soviet School of Chess" that dominated world chess from 1945 to around 2000 through a combative approach and a willingness to ignore "classical" principles when doing so offered credible prospects of a lasting advantage.^[111,108]

With the white pieces, Botvinnik used pawn openings almost exclusively, never starting a game with an e4-opening in his eight World Championship matches, instead favoring the English Opening or Queen's Gambit. When playing Black, he preferred the French Defense or Sicilian Defense against 1.e4, and the Slav Defense or Nimzo-Indian Defence against 1.d4. Rather than seeking one-time tactical tricks, Botvinnik's opening research focused on mastering typical positions and their possibilities better than his rivals.^[78,102,105] His advice to pupils included "My theory of the openings fitted into one notebook" and "You don't have to know that which everyone knows, but it is important to know that which not everyone knows"—though in practice he used different notebooks across different periods, copying select analyses from one to the next.^[110] Botvinnik made extensive theoretical contributions to opening systems, and numerous variations bear his name across the Queen's Gambit Declined (including the Botvinnik Variation in the Semi-Slav and the Kasparov/Botvinnik system in the Exchange Variation), the English Opening, the Caro–Kann Defence (including the Panov–Botvinnik Attack and Botvinnik–Carls Defence), the French Defence (including the Winawer Variation), the Nimzo-Indian Defence, the Dutch Defence (including the 7.b3 Stonewall line and the Botvinnik–Bronstein Variation), the Closed Sicilian, the Grünfeld Defence, the Catalan Opening, and the Queen's Indian Defence.^[218]

In 1963, Botvinnik founded his own chess school within the Soviet coaching system, graduating future world champions Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik, alongside grandmasters Alexei Shirov, Vladimir Akopian, and Jaan Ehlvest.^{[113,114,109]} Although he was not an infallible judge of talent—initially remarking of Karpov that "The boy doesn't have a clue about chess, and there's no future at all for him in this profession", while stating of the 11-year-old Kasparov that "The future of chess lies in the hands of this young man"—Karpov credited Botvinnik's assigned homework and training with significantly improving his play.^[115] Kasparov regarded Botvinnik as a father figure, adopting his emphasis on research, preparation, and innovation, while Kramnik was also favorably impressed when attending the school in Botvinnik's late 70s.^[116,112]

As a doctor of technical sciences, Botvinnik became interested in computers in the 1950s, initially focusing on computer chess programming, and later co-authored reports on the possible application of artificial intelligence in managing the Soviet economy.^[120] As a consultant, he participated in the development of ITEP, the first Soviet computer chess program, which ran on M-2 and M20 computers and defeated the Kotok-McCarthy program developed by John McCarthy in 1967, and he later served as an expert in developing the Caissa program.^[220,221] After 1970, Botvinnik dedicated himself to scientific research alongside the promotion of young chess talents. His research on chess algorithms favored Claude Shannon's "Type B" selective searches to find the minimax tree of possible moves, considering only pieces and moves of significance for chess-immanent reasons rather than relying on brute-force calculations, thereby aiming for genuine artificial intelligence.^[219] Selective search was the only feasible approach for the primitive computers available in the Soviet Union in the early 1960s, which could only calculate three or four half-moves deep when examining every variation. Botvinnik and his team developed advanced search algorithms and heuristic evaluation functions to analyze chess positions and calculate moves, eventually producing an algorithm reasonably effective at finding moves in difficult positions, though it frequently missed the correct move in simple situations such as mate-in-two positions. Although the selective approach proved to be a dead end for chess engines as computing power expanded in the mid-1970s—enabling modern "Type A" brute-force programs searching all variations to defeat human world champions—Botvinnik's work laid the foundation for subsequent chess programs, enhanced the efficiency and accuracy of AI algorithms, and demonstrated that computers could develop sophisticated strategies and tactics imitating human thought.^[121,122]

In the 1970s and 1980s, Botvinnik led a team developing the Pioneer program based on his own concepts, supported by the Academy of Sciences of the Soviet Union and multiple scientific institutes.^[222] According to Botvinnik, Pioneer reached a stage where it could solve certain studies, but it could not play complete games and was never completed; other programmers, including Hans Berliner, accused him of embellishing his results.^[27] Nevertheless, Pioneer featured a generalized decision-making method that, with minor adjustments, was applied to plan the maintenance of power stations across the USSR, and this research laid the groundwork for linguistic geometry as a new branch of game theory.^[123,223] In the early 1990s, Botvinnik worked on the CC Sapiens (Chess Computer Sapiens) project, which sought to imitate the functioning of the human mind in chess, though the project was discontinued following his death.^[224] On September 7, 1991, Botvinnik was awarded the honorary title of Doctor honoris causa by the Faculty of Mathematics of the University of Ferrara in Italy for his work on computer chess.

In 1963, Botvinnik established a school within the Soviet chess training system, organizing training camps three times a year during school holidays for twenty highly skilled young players. Among the most prominent students of the Botvinnik chess school were three world champions—Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik—as well as other top players including Alexei Shirov, Vladimir Akopian, and Jaan Ehlvest.^[281,293] Karpov praised the assigned homework as a major factor in improving play, while Kasparov described Botvinnik as a dear father figure from whom he inherited his approach to preparation, research, and innovation.^[294] Botvinnik continued to play a key role as a coach when Kramnik joined the school in the late 1970s, maintaining his fascination among students.^[271,295] The institution was later reorganized into the Botvinnik-Kasparov School, where Botvinnik worked alongside Kasparov; he also organized a summer training camp in Druskininkai before ultimately stepping down from coaching in 1988. During Perestroika, differing political views led to an estrangement between Botvinnik and his student Kasparov. Mikhail Botvinnik died in Moscow in 1995.

Botvinnik was married and had a daughter.^[30,303] After his victory in the 1948 World Championship, he took a break from chess to devote himself to his electrical engineering studies, earning his doctorate during this three-year interruption. He also invested heavily in computer research devoted to chess, seeking without much success to develop an artificial intelligence. In 1954, Botvinnik wrote an article about inciting socialist revolution in western countries to spread communism without a third world war, and in 1960 he wrote a letter to the Soviet Government proposing economic reforms that ran contrary to party policy.^[87,61] In 1976, when Soviet grandmasters were asked to sign a letter condemning Viktor Korchnoi as a traitor after his defection, Botvinnik evaded the request by claiming he wished to write his own denunciation; because his influence had waned, officials denied him the privilege, so his name did not appear on the group letter, alongside David Bronstein and Boris Spassky who had openly refused to sign.^[92,81]

The Soviet Union viewed chess as a symbol of Communist superiority, resulting in an intensely politicized chess league where Botvinnik, as the country's first home-grown world-class player, saw political repercussions attached to all his actions and faced persistent rumors that domestic opponents received hints not to defeat him.^[86,87] Bronstein asserted that Boris Verlinsky was stripped of his 1929 Soviet Grandmaster title so it would be politically correct for Botvinnik to be the first official Soviet GM. Before the final round of the 1935 Moscow tournament, Nikolai Krylenko proposed that Ilya Rabinovich deliberately lose to Botvinnik to ensure first place, but Botvinnik refused by threatening to put a piece en prise and resign, leading to a draw that shared first place with Salo Flohr.^[89] Following his victory at Nottingham in 1936, Botvinnik sent an effusive telegram of gratitude to Joseph Stalin. After tying for fifth and sixth places at the 1940 Soviet Championship, Botvinnik persuaded the chess leadership to hold the 1941 Absolute Championship of the USSR, and following a personal appeal to defence minister Vyacheslav Molotov, he was exempted from war work three days a week to prepare, ultimately winning the event to reclaim his status as the USSR's top player.^[43,92,87] Following Alexander Alekhine's death in 1946, Bronstein claimed Botvinnik personally invited Samuel Reshevsky, Reuben Fine, Max Euwe, Vasily Smyslov, and Paul Keres to a title tournament, though evidence indicates FIDE had already proposed a World Championship tournament before the 1946 Groningen event while the USSR was not yet a member.^[54] Suspicions that Keres was forced to throw games in the 1948 World Championship were investigated by historian Taylor Kingston, who concluded Soviet officials gave Keres strong hints not to hinder Botvinnik, but Botvinnik angrily protested upon discovering this mid-tournament and Keres likely did not deliberately lose.^[90] Bronstein also insinuated he was pressured to lose their 1951 title match, though accounts by Salo Flohr and Botvinnik's own annotations show Botvinnik was unaware of any such plot.^[91] Yuri Averbakh alleged that FIDE's 1956 rule granting defeated champions a return match and limiting same-country Candidates participants was orchestrated by Botvinnik's friends to his benefit, though Botvinnik's own request to play in the 1956 Candidates as a warm-up was rejected.^[87,88] During the 1961 return match against Mikhail Tal, who suffered from kidney problems, Averbakh claimed Botvinnik would only grant a postponement if certified by Moscow doctors rather than Tal's Riga physicians, after which Tal played and Botvinnik won (+10−5=6) to become the oldest FIDE world championship match winner at age 50.^[54] Botvinnik played his final world championship match in 1963 against Tigran Petrosian, who wore down the 52-year-old champion over 22 games to win the title (+5−2=15).

Botvinnik participated in the 11th and 12th Chess Olympiads, as well as the Olympiads of 1958, 1960, 1962, and 1964. Reigning supreme over Soviet chess for decades, Botvinnik also faced strong enmities, notably from David Bronstein, who doubted his abilities, accused him of benefiting from regime favoritism, and criticized him for winning primarily after adjournment and losing before it.^[8] Regarded as a pillar of the training system and often called the 'father of the Soviet School' of chess, Botvinnik established a chess school in Moscow in 1970 that helped produce future world champions Anatoly Karpov, Garry Kasparov, and Vladimir Kramnik. He was renowned as a master of preparation in opening theory and game analysis, pioneering ideas for Black to actively fight for the advantage rather than merely defending, and demonstrating an exceptional capacity for adaptation by winning all of his world championship rematches as a challenger against Smyslov and Tal.^[163,8] Although Botvinnik possessed formidable positional skill and produced brilliancy-prize attacking masterpieces, he was vulnerable in complicated positions where all consequences could not be calculated, explaining his difficulties against Tal and Bronstein.

Gennadi Sosonko reflected that Botvinnik sternly observed his pupils through decades of quarrels and changes, living through both world wars, the space age, and the rise and fall of the unique Soviet state of which he served as a chess symbol. Kasparov characterized Botvinnik as a classical researcher and worthy successor to Lasker, Capablanca, and Alekhine whose search for truth and profound analysis anticipated modern computer-aided chess methods, while Viktor Korchnoi highlighted his fiercely combative style and drive to fight and defeat any opponent with either color. Botvinnik's memory has been commemorated across Russia through a 2000 Russian Post stamp in the 'Russia 20th Century, Sport' series, a 2011 two-ruble silver coin in the 'Outstanding Personalities of Russia' series, memorial plaques at Peter the Great St. Petersburg Polytechnic University and the Central House of the Chess Player, and an Aeroflot Boeing 737 named in his honor.^{[340,341,342,343,344]}

In 1935, Botvinnik was presented with a car. At the conclusion of the Nottingham 1936 tournament, the Central Executive Committee of the USSR awarded him the Order of the Badge of Honour for "outstanding achievements in the field of chess art", an order he received once again in 1945.^[345] In 1945, he was also named an Honoured Master of Sports of the USSR.^{[8,346,347,243,6]} Following the World Championship match in 1957, Botvinnik and Vasily Smyslov were awarded Orders of Lenin. After winning the rematch against Mikhail Tal, Botvinnik received the Order of the Red Banner of Labour in 1961 for "outstanding sports achievements and merits in the development of the Soviet chess school".

His other honors and titles include Excellence in Physical Culture (1948), Honoured Worker of Culture of the RSFSR (1971), the Order of the October Revolution (1981), Honoured Worker of Science and Technology of the RSFSR (1991), and the Medal "For Labour Distinction".^{[8,346,347,243,6]} In 2017, the Russian airline Aeroflot named a Boeing 737-800 after him.^[32]

Botvinnik was not a very 'present' world champion; he played in few tournaments, but when he participated he usually won. As a player, Botvinnik stood out for his opening preparation, deep strategic concepts, and endgame technique. In 1952, he became champion of the Soviet Union for the sixth time. His further tournament victories included Hastings 1961, Stockholm 1962, the GAK six-player tournament in Amsterdam (1963), the Daniçl Noteboom tournament 1965, the IBM International Chess Tournament Amsterdam 1966, Hastings 1966, and Hoogovens 1969. Botvinnik ended his active career in 1970.

In match play, Botvinnik tied challenge matches in Moscow and Leningrad against Salo Flohr (6/12; +2−2=8) and Grigory Levenfish (6½/13; +5−5=3), and won a training match there against Viacheslav Ragozin (8½/12; +5−0=7). In Moscow, he also won a USSR Championship playoff match against Mark Taimanov (3½/6; +1−0=5). In World Championship matches held in Moscow, Botvinnik tied with David Bronstein (12/24; +5−5=14), tied with Vasily Smyslov (12/24; +7−7=10), lost to Smyslov (9½/22; +3−6=13), and won their rematch (12½/23; +7−5=11). Also in Moscow world title matches, he lost to Mikhail Tal (8½/21; +2−6=13), won the rematch against Tal (13/21; +10−5=6), and lost to Tigran Petrosian (9½/21; +2−5=14).

Looking at Botvinnik's overall scores against the best Soviet and Western players—excluding training games (notably against Ragozin from 1938 to 1947) and matches against Averbakh in 1957 and Furman in 1963—Petrosian, Geller, Bogatyrchuk, and Fine were his most difficult opponents.^[168] Tal, Euwe, Capablanca, Gligorić, Kotov, and Korchnoi held equal scores against him among players with more than three games played. Across his career, his recorded opponents included Alexander Alekhine, Emanuel Lasker, José Rañl Capablanca, Max Euwe, Paul Keres, Bobby Fischer, and Boris Spassky, among many other masters from 1925 through the late 1960s.

In 1935, Botvinnik defeated Chekhover in Moscow with the Réti Opening (1–0). During the May 1936 Moscow tournament, he played notable games against Andor Lilienthal on 16 May 1936 ("Slaying The Giant Botvinnik vs Lilienthal Moscow 1936"), José Raùl Capablanca on 22 May 1936 ("The Primus! Botvinnik vs Capablanca Moscow 1936"), and Emanuel Lasker on 27 May 1936 ("Soviets Organized a Tournament to Show Their Supremacy, But One Man Wouldn't Have It"). At the AVRO 1938 tournament, Botvinnik defeated Capablanca (1–0) using the Nimzoindian Defense, in a game where his opening play appeared unpromising at first sight, but he knew how his attack would develop.

Playing as Black in the USSR Absolute Championship 1941, Botvinnik demolished world title contender Paul Keres in 22 moves using the Nimzoindian Defense (0–1). He also defeated Tolush in the USSR Championship 1944 (0–1, Long-term). In the 1945 US vs USSR radio match, Botvinnik used the Botvinnik System in the Semi-Slav Defense to bulldoze US champion Arnold Denker (0–1).

In the 1960 World Chess Championship match against Mikhail Tal, Tal played 11. Nxe6!?, a sacrifice considered dubious by Garry Kasparov, while Botvinnik found strong moves such as 16... g6!.^[171,8,172] Before the adjournment, Botvinnik sealed 41... Kf6! after 42 minutes of reflection, leaving him with only 20 minutes to reach the next time control, and went on to win (0–1) after 58... Ne2, a game commented on by author Eric Schiller in Complete Defense to King's Pawn Openings.^[8] At the Alekhine Memorial Tournament in Moscow 1966, Botvinnik defeated Keres (1–0), demonstrating his superior understanding of positions and when to open them. In Monaco 1968, Botvinnik defeated Lajos Portisch (1–0) in a fireworks display starting with an exchange sacrifice on the c-file, a tactic on which Botvinnik wrote the book.

Botvinnik annotated 300 of his own games and more than 150 games of other chess players. He served as a co-author and editor of numerous books, and authored many scientific works in Russian.

His Russian-language chess match accounts and game collections include Flohr — Botvinnik Match (1934, Moscow: Physical Culture and Tourism, 121 p.), Selected Games (1926-1936) (1938, Moscow: Physical Culture and Sport, 368 p.), Alekhine — Euwe Rematch (1939, Moscow: Physical Culture and Sport, 215 p.), and Eleventh All-Union Chess Championship (1939, Moscow: Physical Culture and Sport, 164 p.). Later Russian tournament, instructional, and biographical books include 1941 Match-Tournament (1947, Moscow: Physical Culture and Sport, 120 p.), Selected Games (1926—1946) (1949, Moscow: Physical Culture and Sport, 120 p.), Soviet Chess School (1951, Moscow: Physical Culture and Sport, 120 p.), Botvinnik — Smyslov Match (1955, Moscow: Physical Culture and Sport, 120 p.), and Smyslov — Botvinnik Rematch 1958 (1957, Moscow: Physical Culture and Sport, 120 p.). His subsequent publications comprise Three Matches of Anatoly Karpov (Moscow: Molodaya Gvardiya, 1975, 125 p.), Towards the Goal (Moscow: Molodaya Gvardiya, 1978, 255 p.), Half a Century in Chess (1978, Moscow: Physical Culture and Sport, 272 p.), Episodes of Chess Battles (Moscow: Sovetskaya Rossiya, 1983, 143 p., Chess Art), Analytical and Critical Works (1923—1941) (1984, Moscow: Physical Culture and Sport, 319 p.), and At the Goal: Memoirs. Games (Moscow: Poliri, 1997, 358 p., ISBN 5-89183-001-9).

Botvinnik wrote extensively on computer science, algorithms, and cybernetics applied to chess, publishing Algorithm of the Chess Game (Moscow: Nauka, 1968, 94 p.), On the Cybernetic Purpose of the Game (Moscow: Sovetskoye Radio, 1975, 86 p.), From Chess Player to Machine (Moscow: Physical Culture and Sport, 1979, 176 p.), On Solving Inexact Search Problems (Moscow: Sovetskoye Radio, 1979, Cybernetics), and The Chess Method of Solving Search Problems (Moscow: Sovietsky Sport, 1989, 112 p.). His computer chess works in English include Computers, Chess and Long-Range Planning (Springer Verlag, 1970) and Computers in Chess: Solving Inexact Search Problems (Springer-Verlag, 1984).

He was born on August 17, 1911, and died from cancer on May 5, 1995, in Moscow, where he was buried at Novodevichy Cemetery. Further online coverage includes Mikhail Moiseyevich Botvinnik – hundredth anniversary on ChessBase.com, 11207, and material about Mikhail Botvinnik. In addition, he was a Russian engineer, a Doctor of Technical Sciences, a 20th-century Soviet writer, a Lenin Prize winner, and a recipient of the Order of the Red Banner of Labour.

Reference documentation about him includes Volume II of "Kazakhstan": National Encyclopedia (edited by A. Nysanbayev, Almaty: "Kazakh Encyclopedia" Chief Editorial Board, 1998, ISBN 5-89800-123-9). Additional bibliographic references include Árpád Elo's The Rating of Chessplayers, Past and Present (Arco, 1978), Kings of Chess (Pavilion, 1986), David Hooper and Kenneth Whyld's The Oxford Companion to Chess (Oxford University Press, 1996), The Encyclopaedia of Chess (Hale, 1970), World chess champions (Pergamon, 1981), and McFarland & Co.'s Chess Results 1951–1955 (2010) and Chess Results 1956–1960 (2010).

Biographical and reference literature on the subject includes the Sports Encyclopedia published in Tbilisi (2006, p. 112), Irving Chernev's Twelve Great Chess Players and Their Best Games (Dover, 1995), and Garry Kasparov's My Great Predecessors, part II (Everyman Chess, 2003). Additional literature and game collections include One Hundred Selected Games (Dover, 1981), Botvinnik's Best Games 1947–1970 (Batsford, 1972), Curse of Kirsan: Adventures in the Chess Underworld (Russell Enterprises, 2002), Team Tal: An Inside Story (Elk and Ruby Publishing House, 2017), Genna Sosonko's The Rise and Fall of David Bronstein (Elk and Ruby Publishing House, 2017), and "Mikhail Botvinnik, Chess Champion and Teacher of Champions, Dies at 83" (May 7, 1995).

External media include a film newsreel about a simultaneous display of Salo Flohr and Mikhail Botvinnik in Hilversum (NL) on 1 January 1964. Further online coverage includes Mikhail Moiseyevich Botvinnik – hundredth anniversary on ChessBase.com, 11207, and material about Mikhail Botvinnik. Mikhail Botvinnik's profile and games are available at Chessgames.com, and muljadi.org provides access to Botvinnik's games, allowing visitors to view 1393 games of Mikhail Botvinnik as well as 40 decisive positions from his games.

Born in 1911 and having died in 1995, he was a Russian Jew as well as a Russian and Soviet citizen. He was a World Chess Champion, a Soviet chess champion, and a Russian and Soviet chess player, as well as a chess book writer, chess composer, and computer chess programmer. Additionally, he was a recipient of the Order of Lenin, the Order of the Red Banner of Labour (USSR), the Order of the October Revolution, and the Order of the Badge of Honour.

The position shown after the 12th move is very reminiscent of the first example; here too, White has a pawn advantage on the queenside, while Black's knight on e4 does not provide sufficient compensation. White's plan is similar: to secure the pawn structure on the queenside, control c6 and perhaps also c7, and after b5, advance the pawn to c6. White's 13th move, Bb5, threatens Bxc6 followed by Ne5, establishing a strong knight controlling deep in Black's territory. Black prevents this with 13...Ng5, but the exchanges that follow immediately afterward lead to a completely different position after the 19th move ...Rxe5.

White still has a pawn majority on the queenside, but Black has a strong pawn on d5. White also possesses a new advantage—a strong knight against a weak bishop for Black, since Black's pawns are all positioned on the color of the bishop and therefore restrict its movement. The knight will eventually be able to reach d4, where it will be safe from both the pawns and the bishop. See entry Botvinnik - Capablanca AVRO 1938.

The game is presented twice: first as the entire game, where it can be viewed continuously or paused occasionally to read the notes for the game. Second, the game is presented move by move with detailed notes at a more basic level so that the ideas of both players can be followed.