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

EGTB: win in 4 half-moves

# move score
1 Nb5 win in 3 half-moves
2 Kd7 loss in 12 half-moves
3 Kd8 loss in 12 half-moves
4 Nc8 loss in 10 half-moves
5 Ke8 loss in 4 half-moves
6 Kd6 loss in 2 half-moves
7 Ke6 loss in 2 half-moves
8 Kf6 loss in 2 half-moves
9 Kf7 loss in 2 half-moves
10 Kf8 loss in 2 half-moves
11 Nc6 loss in 2 half-moves