Erika Belle (chess player) Erika Belle (chess player) Erika Belle (born 20 January 1956) is a Dutch chess player who hold the FIDE title of Woman International Master (1982). She was a three-time winner of the Dutch Women's Chess Championship (1975, 1980, 1981). From mid-1970s to mid-1980s, Erika Belle was one of the leading Dutch women's chess players. She three time won Dutch Women's Chess Championships: 1975, 1980, 1981. Participant of many international chess tournaments. In 1979, she shared with Gertrude Baumstark 2nd place in Women's International Chess tournament in Nałęczów (tournament won Tünde Csonkics). In 1981, she ranked 2nd behind Nieves García Vicente
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