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

EGTB: win in 4 half-moves

# move score
1 Kh6 win in 3 half-moves
2 Kf7 loss in 18 half-moves
3 Kh7 loss in 18 half-moves
4 Kf8 loss in 16 half-moves
5 Kg8 loss in 14 half-moves
6 Kh8 loss in 8 half-moves
7 Kf6 loss in 2 half-moves
8 Kg6 loss in 2 half-moves