this post was submitted on 22 Oct 2023
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AnarchyChess

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Holy hell

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[โ€“] [email protected] 12 points 1 year ago (15 children)

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?

[โ€“] [email protected] 3 points 1 year ago* (last edited 1 year ago)

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

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