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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kc5 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Nf2 win in 3 half-moves
5 Ng1 win in 3 half-moves
6 Ng5 win in 3 half-moves
7 Nf4 win in 5 half-moves
8 Kb6 win in 7 half-moves
9 Kd6 win in 7 half-moves
10 Kg5 win in 7 half-moves
11 Kg6 win in 7 half-moves
12 Kg7 win in 7 half-moves
13 Kh5 win in 7 half-moves
14 Kh7 win in 7 half-moves
15 Kb7 win in 9 half-moves
16 Kc7 win in 9 half-moves
17 Kd7 win in 9 half-moves