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 Kb6 win in 3 half-moves
3 Kc5 win in 3 half-moves
4 Kc7 win in 3 half-moves
5 Kb7 draw
6 Nb4 draw
7 Nb6 draw
8 Ne3 draw
9 Ne7 draw
10 Kd6 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Nc3 loss in 2 half-moves
13 Nc7 loss in 2 half-moves
14 Nf4 loss in 2 half-moves
15 Nf6 loss in 2 half-moves