Bishops of Opposite Colors

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Home * Evaluation * Game Phases * Endgame * Bishops of Opposite Colors

The endgame in which both sides posses only pawns and bishops of opposite colors is notorious difficult to win, as the weaker side is likely to create a blockade on the squares controlled by its own bishop. One pawn advantage is usually not enough to force the win. The chances for that exist either when the stronger side has either passed pawns on both wings or connected passed pawns. In the latter case the winning method is to advance pawns in such a manner that they are placed on the squares controlled by enemy bishop, since it makes blockade impossible.

Scaling down

A good idea for the evaluation function is to scale down the material value when the pure bishop of opposite colors ending is encountered. If some more pieces beside the bishops are present on the board, winning the endgame is easier, but requires complex strategy, based rather on zugzwang and attacking possibilities than on simply advancing passed pawns.

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