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The two knights endgame is a chess endgame with a king and two knights versus a king. In contrast to a king and two bishops (on opposite-colored squares), or a bishop and a knight, a king and two knights cannot force checkmate against a lone king (however, the superior side can force stalemate [1] [2]).
[2] In the positions in which the pawn wins, at most nineteen moves are required to promote the pawn (with optimal play) and at most nine more moves to checkmate, assuming that the pawn was promoted to a queen. [3] Except for the section on defending and some actual games, it will be assumed that White has a king and pawn and Black has a lone ...
(However, Korchnoi did miss a win earlier in the game.) Black's pawn on b5 is actually a liability. If the black king is forced into a position where he cannot move, Black would have to move the pawn and White would win the game. Until the sixth game of the World Chess Championship 2021, this was the longest game of a world championship.
In particular, if the pawn is on its sixth rank and is a bishop pawn or rook pawn, and the bishop does not control the pawn's promotion square, the position is a draw. [55] See Wrong bishop . A rook versus a minor piece: normally a draw but in some cases the rook wins, see pawnless chess endgame .
With a rook pawn, usually in actual play the defending rook or king is able to get in front of the pawn. If the defending king gets in front of the pawn, the game is a draw. If the defending rook gets in front of the pawn, the result depends on which king arrives on the scene first. [61] The attacking king or rook may be in front of the pawn.
White needs to pin the pawn by 2. Qh8, but the king blocks the pin. 2. Qb7+ This was White's only check which prevents the pawn from advancing, and Black responds 2... Kc1! repeating the position. If the white king is anywhere else (other than g7 and h8), the queen can pin the pawn and allow for the queen and then the king to approach. [4]
A pawnless chess endgame is a chess endgame in which only a few pieces remain, and no pawns.The basic checkmates are types of pawnless endgames. Endgames without pawns do not occur very often in practice except for the basic checkmates of king and queen versus king, king and rook versus king, and queen versus rook. [1]
If the pawn is held up before the fifth rank, the rook is better in front of the pawn. Often the rook is best protecting the pawn from the side if it is on the fifth rank or higher. [20] In the ending of a rook and pawn versus a rook, if the defending king is cut off from the pawn's file, then the best defence is with the rook on its first rank ...