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 Kd4 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Nc4 win in 3 half-moves
5 Nd1 win in 3 half-moves
6 Nd3 win in 3 half-moves
7 Kb6 win in 7 half-moves
8 Kd6 win in 7 half-moves
9 Kc6 win in 11 half-moves
10 Na4 win in 11 half-moves
11 Kb4 loss in 2 half-moves
12 Kc4 loss in 2 half-moves