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 Ka6 draw
3 Kb7 draw
4 Kb8 loss in 8 half-moves
5 Ka8 loss in 4 half-moves
6 Kb6 loss in 4 half-moves
7 Nb3 loss in 2 half-moves
8 Nc4 loss in 2 half-moves
9 Nc6 loss in 2 half-moves