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

EGTB: win in 6 half-moves

# move score
1 Kc7 win in 5 half-moves
2 Kc8 loss in 16 half-moves
3 Ke7 loss in 8 half-moves
4 Ke8 loss in 8 half-moves
5 Kd7 loss in 6 half-moves