En-Passant: How it Works
En-Passant is intended to prevent pawns from avoiding being captured when they move two squares. So, if you move the white pawn to d4, it will be captured by en-passant. If you move it to d3, it’s a normal capture.
FEN: 4k3/8/8/8/2p5/8/3P4/5K2 w
when 1two pawns stand side by side on the 5th rank one pawn can move
diagonally and take the other pawn. Easy and simple : )
I bet this chess puzzle is unsolvable!
When kf1 is approaching kc3, there is a chance for the pawn to move two squares and check (black king will be at c5).