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

EGTB: win in 4 half-moves

# move score
1 Kf7 win in 3 half-moves
2 Kg7 win in 3 half-moves
3 Kh7 win in 3 half-moves
4 Kf6 win in 5 half-moves
5 Kh6 loss in 8 half-moves
6 Kf5 loss in 6 half-moves
7 Kg5 loss in 6 half-moves
8 Kh5 loss in 6 half-moves