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Feb 14 at 18:42 comment added Rosie F Your first two statements are true. But they are needless, because they are already covered by the rule that the turn player may not leave their own king in check.
Feb 12 at 20:48 comment added Chessanator It's not possible to make a pin that only goes through the taken pawn, since either the pin would have to go through a diagonal (The previous position wasn't legal because the black king would be in check before the white pawn moves) or it would have to be a pin on the file (the taking pawn replaces the taken one on the file and still blocks the check).
Feb 12 at 20:41 comment added Chessanator It's also possible for "both pawns" to be pinned horizontally to the king. Using the pawns as in your examples, it's then possible for white to have pushed d2-d4 (the black pawn on c4 was blocking the check, so the preceding position is legal) and it's legal for black to play any other pawn move (when the pawn on c4 moves, the white pawn on d4 is blocking the check). But taking en-passant removes both pawns from the fourth row and exposes the black king to check, so is illegal.
S Mar 6, 2020 at 20:27 history suggested Deduplicator CC BY-SA 4.0
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Mar 6, 2020 at 19:55 review Suggested edits
S Mar 6, 2020 at 20:27
Sep 21, 2019 at 18:13 history edited Rewan Demontay CC BY-SA 4.0
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Jul 2, 2014 at 0:18 comment added DJClayworth I think it would be helpful to mention that it can be done only on the succeeding move. It's a restriction like no other in the game.
Jun 23, 2014 at 11:52 vote accept ThunderToes
Jun 23, 2014 at 11:42 history answered Fate CC BY-SA 3.0