Questions tagged [chess]
A puzzle related to chess, a two-player board game with white and black pieces of varying ranks.
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Whose turn is it?
This puzzle builds around some similar ideas as in my last one, but here I was able to flesh out the story in the critical sequence a bit more. Can you tell whose turn it is in this position? And, ...
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Swap the positions of the 4 chess knights
The puzzle seems simple enough. It is only a few squares and you only have four knights (the knights move in an “L” shape, like in regular chess). The goal is also straightforward: swap the positions ...
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Can black and white cooperatively put a stalemate to black in 16 moves (under ser-h conditions)?
ser-h=n – serial helpstalemate in n moves. Black execute n moves in a row, after that White execute a stalemate for bK.
Additional questions:
a) how many stalemates are possible under the same ...
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Can white checkmate in 1 move?
How can this position be reached (via a valid chess game) so that white can checkmate in 1 move?
S.Nichto,2024
If desired, you can answer additional questions:
a) the minimum number of moves in the ...
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What were the last three single moves?
Puzzle by Niels Høeg:
White just moved. What were the last three single moves? In other words, what was White’s last move and Black’s move before that and White’s move before that?
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Fill the grid subject to product, sum and knight move constraints
Using the numbers 2, 3, 4, ... 19 each exactly once, fill some of the empty squares in the grid with a number so that the product of the numbers in each row is as shown, as is the sum of the numbers ...
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Can you find the last 20 moves? #2
In this puzzle I finally managed to implement some themes that I really like, but so far was not able to get working properly in any of my own puzzles. Composing this was quite the challenge and in ...
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Who are these rooks?
Here is my newest retrograde chess puzzle, perhaps a bit on the trickier side once again:
Can you determine the origin of each of the four rooks in this position?
Please provide your reasoning and a ...
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Can White still castle? #2
For this puzzle I had another go at this theme, with a bit of a different take:
Is it possible to reach this position in such a way that White can still castle?
Please provide your reasoning in your ...
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Playing with their food
Here is another retrograde chess puzzle! For once, this should be much more approachable than all my previous stuff (but hopefully still quite cute), so please feel free to have a go if you would like....
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King and Pawn Endgame
Here comes another retrograde chess puzzle, this time focussing on just the history behind the pawn structure. Constructing this was a fun challenge and I think the result is pretty cute. :)
Can you ...
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Can you find the last 20 Moves?
For this puzzle, I tried my hand at a type of structure similar to those appearing in a few of Dmitri Baibikov's (brilliant!) puzzles. It took a lot of fiddling to finally get this working, but I'm ...
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The last five Moves #2
Once again, here is another retrograde analysis puzzle! The task is simple:
Can you determine the last five (half-)moves that led to the position below?
Please provide your reasoning and a (sketch of ...
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What were the last five moves?
Here is yet another retrograde chess puzzle - this time a bit more on the trickier side, I believe. I'm quite happy with how this one turned out, so please have a try if you like :)
What were the last ...
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Which of these chess positions is legal?
This little quiz should be a bit easier than my previous puzzles so feel free to join in!
Simply put: Which of these chess positions is legal?
To be clear, I consider a position to be legal, if it ...
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