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 Nc6 draw
3 Nc8 draw
4 Kb6 loss in 8 half-moves
5 Ka6 loss in 6 half-moves
6 Ka8 loss in 6 half-moves
7 Kb8 loss in 6 half-moves
8 Kc6 loss in 6 half-moves
9 Kc7 loss in 6 half-moves
10 Kc8 loss in 6 half-moves