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

EGTB: win in 4 half-moves

# move score
1 Kf8 win in 3 half-moves
2 Khg6 win in 3 half-moves
3 Kf6 win in 5 half-moves
4 Kg5 win in 5 half-moves
5 Kf7 win in 9 half-moves
6 Kh5 win in 9 half-moves
7 Kg8 loss in 2 half-moves
8 Kgg6 loss in 2 half-moves
9 Kh8 loss in 2 half-moves
10 Rh8 loss in 2 half-moves