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

EGTB: win in 4 half-moves

# move score
1 Nb3 win in 3 half-moves
2 Nb7 win in 3 half-moves
3 Kd7 loss in 28 half-moves
4 Ke7 loss in 28 half-moves
5 Kd8 loss in 26 half-moves
6 Kf7 loss in 26 half-moves
7 Kf8 loss in 26 half-moves
8 Nc4 loss in 2 half-moves
9 Nc6 loss in 2 half-moves