103
White to move and mate in... uhh... how did we get here?
(sh.itjust.works)
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this post was submitted on 22 Oct 2023
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AnarchyChess
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Holy hell
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I've often wondered if it's always possible to tell whether any arbitrary boardstate is possible, and I came up with a few easy ways to tell how the board can't be legal without verifying that no set of moves can lead to it. Can you spot every illegality?
The ones I have: touching kings (and so many checks on the black king even though it's not his move), pawns on the first/last rank, 3 bishops even though no pawns have left the board
Edit: the h pawns passed each other