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  2. Helpmate - Wikipedia

    en.wikipedia.org/wiki/Helpmate

    The example shown is a helpmate in 2 by Henry Forsberg (published in 1935 in Revista Romana de Şah). The twins are created by substituting the black queen on a6 with a different piece. The solutions are: a) diagram position: 1. Qf6 Nc5 2. Qb2 Ra4# b) with black rook at a6: 1. Rb6 Rb1 2. Rb3 Ra1# c) with black bishop at a6: 1. Bc4 Ne1 2. Ba2 Nc2#

  3. Joke chess problem - Wikipedia

    en.wikipedia.org/wiki/Joke_chess_problem

    Some chess puzzles are not really puzzles at all. In the diagram, White is asked to checkmate Black in six moves. The joke in this case is that, by the rules of chess, White has no choice in the matter; the only legal moves lead directly to the "solution": 1. d4 b5 2. d5 b4 3. axb4 a3 4. b5 a2 5. b6 a1=any 6. b7#

  4. Chess problem - Wikipedia

    en.wikipedia.org/wiki/Chess_problem

    A chess problem, also called a chess composition, is a puzzle created by the composer using chess pieces on a chessboard, which presents the solver with a particular task.. For instance, a position may be given with the instruction that White is to move first, and checkmate Black in two moves against any possible defen

  5. Chess puzzle - Wikipedia

    en.wikipedia.org/wiki/Chess_puzzle

    But puzzles can also set different objectives. Examples include deducing the last move played, the location of a missing piece, or whether a player has lost the right to castle. Sometimes the objective is antithetical to normal chess, such as helping (or even compelling) the opponent to checkmate one's own king.

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  7. Checkmate pattern - Wikipedia

    en.wikipedia.org/wiki/Checkmate_pattern

    Blackburne's mate is named for Joseph Henry Blackburne and is a rare method of checkmating. The checkmate utilizes enemy pieces (typically a rook) and/or the edge of the board, together with a friendly knight, to confine the enemy king's sideways escape, while a friendly bishop pair takes the remaining two diagonals off from the enemy king. [7]

  8. Babson task - Wikipedia

    en.wikipedia.org/wiki/Babson_task

    If Black promotes, then the only way for White towards a forced checkmate in the stipulated number of moves is to promote a pawn to the same piece to which Black promoted. Joseph Ney Babson [ it ] (1852–1929), the task's eponym, first conceived of the task in 1884, but never solved it. [ 1 ]

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