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Plaskett's Puzzle is a chess endgame study created by the Dutch endgame composer Gijs van Breukelen (February 27, 1946 – December 21, 2022) around 1970, although not published at the time. Van Breukelen published the puzzle in 1990 in the Netherlands chess magazine Schakend Nederland .
Also, when first presented, the black piece at h4 was a pawn, but a computer discovered an additional solution by 1.axb8=N hxg3+ 2.Kh3 Bxb8 3.Qxc2 and mate next move. Yarosh then substituted a knight on that square; now 1.axb8=N fails to 1...Nf3+ 2.Bxf3 Bxb8 3.Qxc2 Bxg3+ and White is too late.
If there is more than one solution, the composer will state this; if there is no such statement, the problem has only one solution. The example to the right is a helpmate in 2 (h#2) with two solutions. It was published in the June 1975 issue of Schach and is by the helpmate specialist Chris J. Feather. The two solutions are 1. Bxb8 Bd5 2. Nc7 ...
The Kissing Number Problem. A broad category of problems in math are called the Sphere Packing Problems. They range from pure math to practical applications, generally putting math terminology to ...
In the game of chess, an endgame study, or just study, is a composed position—that is, one that has been made up rather than played in an actual game—presented as a sort of puzzle, in which the aim of the solver is to find the essentially unique way for one side (usually White) to win or draw, as stipulated, against any moves the other side plays.
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#
Warning: This article contains spoilers. 4 Pics 1 Word continues to delight and frustrate us. Occasionally, we'll rattle off four to five puzzles with little effort before getting stuck for ...
It is a mate in 2. The key is 1.Qd6, which is a Novotny interference with the black rook and bishop on b8, so threatening 2.Ne5# and 2.Nxd2#. After the capture of the queen by the rook or bishop, the other black piece is still interfered with by the capturing unit; so 1...Rxd6 rules out 2.Nxd2 but still allows 2.Ne5#, while 1...Bxd6 rules out 2 ...