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

EGTB: win in 4 half-moves

# move score
1 Kg4 win in 3 half-moves
2 Kh4 win in 3 half-moves
3 Kf6 loss in 44 half-moves
4 Kh5 loss in 28 half-moves
5 Kg6 loss in 24 half-moves
6 Kh6 loss in 20 half-moves
7 Kf4 loss in 2 half-moves
8 Kf5 loss in 2 half-moves