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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kc4 win in 3 half-moves
3 Kd4 win in 3 half-moves
4 Kb3 win in 5 half-moves
5 Kd3 win in 5 half-moves
6 Kf1 win in 5 half-moves
7 Kf2 win in 5 half-moves
8 Kf4 win in 5 half-moves
9 Kg2 win in 5 half-moves
10 Kg5 win in 5 half-moves
11 Kh1 win in 5 half-moves
12 Kh2 win in 5 half-moves
13 Kh5 win in 5 half-moves
14 Kf3 win in 7 half-moves
15 Kg3 win in 7 half-moves
16 Kh3 win in 7 half-moves
17 Kh4 win in 7 half-moves
18 Kb2 win in 9 half-moves
19 Kc2 win in 9 half-moves
20 Kd2 win in 9 half-moves
21 Kf5 loss in 2 half-moves