All Questions
4 questions
3
votes
0
answers
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Maximum saved moves to win caused by zugzwang
For a zugzwang where x>y and:
If white has the move, White can force checkmate in x full moves
If Black has the move, White can force checkmate in y full moves
The score of such a zugzwang is x-y....
- 1,003
4
votes
1
answer
165
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A mobility puzzle
[FEN "8/8/8/8/pp6/kp6/1p6/1K6 w KQkq - 0 1"]
This is a well-known position: both sides are stalemated (if it's their move). It's the lightest position with this property.
Devise the ...
- 17.3k
7
votes
3
answers
1k
views
Square Free Position
[FEN ""]
For the purposes of this question, a “square” is a set of four occupied cells on the chessboard whose centres form a geometric square. The cell may have any orientation. For ...
- 325
11
votes
3
answers
2k
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How to solve this puzzle of Martin Gardner?
Martin Gardner mentioned the following "chess" problem in his column, Mathematical Games, for Scientific American (he got it from Smullyan, who learned about it from a high school math ...
- 221