John Littlewood (chess player) John Littlewood (chess player) John Eric Littlewood (25 May 1931 – 16 September 2009) was for many years a leading British chess player and took the title of national senior champion in 2006. Perhaps his most famous game was the one he lost against the world champion Mikhail Botvinnik at the Hastings International Chess Congress 1961/2. Littlewood launched a fearsome attack which Botvinnik was able to defend only by means of a tactical finesse. Botvinnik chose to include the game in his autobiographical "Best Games 1947–1970". John Littlewood was born in Sheffield, Yorkshire in 1931, the fourth of his eleven
Chess and is provably less than 10, with a game-tree complexity of approximately 10. The game-tree complexity of chess was first calculated by Claude Shannon as 10, a number known as the Shannon number. Typically an average position has thirty to forty possible moves, but there may be as few as zero (in the case of checkmate or stalemate) or (in a constructed position) as many as 218. Chess has inspired many combinatorial puzzles, such as the knight's tour and the eight queens puzzle. The idea of creating a chess-playing machine dates to the 18th century; around 1769, the chess-playing automaton