Click on the third or sixth rank to set the en passant target square.

EGTB: win in 1 half-moves

# move score
1 Rcxh4 win in 11 half-moves
2 R3xh4 loss in 2 half-moves
3 R5xh4 loss in 2 half-moves
4 Rxc7 loss in 2 half-moves