there was one game that showed a position where black moved his pawn two spaces thus putting the white king in check, and cutting off any escape route, aka checkmate.
So, after being checkmated, the player playing white took the pawn via en passant
If the white player can capture the checking piece ( black pawn), then it was not checkmate in the first place.
I have seen an interesting puzzle, which is similar to what you are saying. The erroneous argument suggests that as the black pawn was captured "in passing" ie on the d6 square, the white check was never blocked. This is of course nonsense. Each player must complete their own move before the opponent can move. After the black pawn has moved to d5, the white check is blocked and the white king is now in check. White has no option to play pxp ep. as this does not deal with the check on his king, and as he can not get out of check, the white king is mated.
http://godsnotwheregodsnot.blogspot.com/2010/06/en-passant-chess-puzzle.html
Years ago I was thumbing through a chess book (I cannot for the life of me remember the title, something about odd chess games?), and there was one game that showed a position where black moved his pawn two spaces thus putting the white king in check, and cutting off any escape route, aka checkmate.
But, aha! When black moved his pawn two spaces, it landed to the side of a white pawn. So, after being checkmated, the player playing white took the pawn via en passant and checkmated the black king. The white player argued that since the black pawn was captured "in passing" black's move and checkmate should not count, and white should be the victor.
Does anyone have specifics about this game?
Edit: what I mean is, does anyone know a way to reference this game specifically? Player names and date or the like?