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

EGTB: win in 4 half-moves

# move score
1 Kf6 win in 3 half-moves
2 Kg6 win in 3 half-moves
3 Kh6 win in 3 half-moves
4 Kf5 loss in 54 half-moves
5 Kf4 loss in 50 half-moves
6 Kg4 loss in 48 half-moves
7 Kh4 loss in 44 half-moves
8 Kh5 loss in 44 half-moves