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 Ka5 draw
3 Kb5 draw
4 Kb6 draw
5 Ka7 loss in 10 half-moves
6 Kb7 loss in 10 half-moves
7 Nb1 loss in 2 half-moves
8 Nc2 loss in 2 half-moves
9 Nc4 loss in 2 half-moves