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 Ke8 loss in 4 half-moves
3 Kc8 loss in 2 half-moves
4 Kd7 loss in 2 half-moves
5 Nc6 loss in 2 half-moves
6 Nc8 loss in 2 half-moves
7 Kc7 loss in 1 half-moves
8 Ke7 loss in 1 half-moves