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 7 half-moves
5 Kd2 win in 11 half-moves
6 Ng4 win in 11 half-moves
7 Kc2 win in 13 half-moves
8 Kd3 win in 13 half-moves
9 Nf1 win in 13 half-moves
10 Nf3 win in 13 half-moves
11 Kb2 win in 15 half-moves