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

EGTB: win in 4 half-moves

# move score
1 Nb7 win in 3 half-moves
2 Kc6 loss in 14 half-moves
3 Kb6 loss in 12 half-moves
4 Kc5 loss in 12 half-moves
5 Nc6 loss in 10 half-moves
6 Kc4 loss in 8 half-moves
7 Kb4 loss in 6 half-moves
8 Ka4 loss in 4 half-moves
9 Ka6 loss in 4 half-moves
10 Nb3 loss in 2 half-moves
11 Nc4 loss in 2 half-moves