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

EGTB: win in 1 half-moves

# move score
1 Kxa7 win in 1 half-moves
2 Kbxc7 loss in 1 half-moves
3 Kdxc7 loss in 1 half-moves
4 Rxc7 loss in 1 half-moves