selfmate

chess

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July 13, 2026

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A "selfmate" in chess is a type of chess problem where one side, typically White, is forced to checkmate the other side (Black) within a specified number of moves. Unlike a standard problem where White tries to force mate, in a selfmate, Black is not cooperating and must deliver the checkmate themselves. This is also known as a "suimate". These problems are considered a form of "heterodox" chess composition, meaning they involve unusual stipulations or rules compared to standard chess. The selfmate is an old form of chess problem, believed to be at least 400 years old.12

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chess
Heterodox problems
Another is the selfmate, in which White moves first and forces Black—who is not cooperating—to deliver mate in the specified number of moves. (See the composition.) In a retractor problem the player given the task begins by taking back a move and replacing it with another move, with…
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Another is the selfmate, in which White moves first and forces Black—who is not cooperating—to deliver mate in the specified number of moves. (See the composition.) In a retractor problem the player given the task begins by taking back a move and replacing it with another move, with…
Read More