Rules of chess the one nearest White's side of the board. Each square of the board, then, is uniquely identified by its file letter and rank number. The white king, for example, starts the game on square e1. The black knight on b8 can move to a6 or c6. In formal competition, each player is obliged to record each move as it is played in a chess notation in order to settle disputes about illegal positions, overstepping time control, and making claims of draws by the fifty-move rule or repetition of position. Algebraic chess notation is the accepted standard for recording games today.
John Cochrane (chess player) chess aware of how strong Cochrane was at his peak, and described him as "Father of the English Chess School". During the second part of Cochrane's career in India his main opponents were the Indian players Moheschunder Bannerjee and Saumchurn Guttack. Cochrane's first recorded use of the Cochrane Gambit against Petrov's Defence was in a game against Bannerjee in 1848. Bannerjee's fondness for fianchettoed openings, as reported by Cochrane, eventually led to the Indian defence class of openings. Another game, published in William Norwood Potter's "City of London Chess Magazine" shows Bannerjee playing with the black pieces and beating Cochrane