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Basic endings Endings must be mastered first. Tactics, positional sacrifices, king opposition, zugzwang, triangulation may be relevant. 38 games, 1912-2005 Interference Nowotny interference occurs when a piece cuts off a line of communication of another and causes a defense weakness 6 games, 1882-2007 King and Pawn endgames The (distant) opposition, zugzwang, reserving pawn moves, triangulating the king are important concepts. The rule of the "square' helps in counting moves when defending against a passed pawn. Pawn breakthroughs need accurate calculation - advance the unopposed pawn to create a passer. "Turning the flank". King in oppositon on the 6th rank in front of his pawn on the 5th against lone king on the 8th is a win (except the rook file). Critical squares of the pawn determine whether an invading king can capture it. Chess Endings for the practical player - by L.Pachman - is a good reference. 4 games, 1914-2006 King hunt Forced moves help in visualising. 1 game, 1972 Mate/ combinations Tactics, sacrifices, ... 46 games, 1863-2012 Minimum forces for mate Knowledge of minimal army for mating is essential for steering and assessing an endgame prospect for a draw or whether to play on. The Troitsky line is a helpful guideline in 2N against lone pawn ending. 10 games, 1954-2006 Overloading This tactic overextends the defensive resources so that a deflection occurs, leaving a weakness elsewhere. 1 game, 1978