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

EGTB: win in 2 half-moves

# move score
1 Nb3 win in 1 half-moves
2 Kb7 loss in 14 half-moves
3 Kb8 loss in 14 half-moves
4 Kd7 loss in 14 half-moves
5 Kc7 loss in 12 half-moves
6 Kd8 loss in 4 half-moves
7 Nc2 loss in 2 half-moves