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user 15415
For questions related to (world) records in chess, e.g. the longest game (in moves or in duration), highest obtained rating, longest mate in n puzzle, etc.
4
votes
Maximum number of ways to get out of check
Since several lower bounds have already been posted, I would like to elaborate a bit more on the possible upper bounds, since the estimate in the question is a bit oversimplified in my opinion (althou …
- 2,454
15
votes
Accepted
Fastest possible checkmate by en passant
The same question has also been discussed and answered in the lichess forum, and as mentioned by others already, the answer is 11 half-moves for white and 12 half-moves for black. You might find some …
- 2,454
6
votes
Longest possible FEN
Using the definition of FEN it is relatively straightforward to compute an upper bound:
piece placement: 64 (pieces/squares) + 7 (slashes)
color: 1 (w/b)
castling: 4 (KQkq)
en passant: 2 (e3)
halfmo …
- 2,454