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

EGTB: win in 4 half-moves

# move score
1 Nb4 win in 3 half-moves
2 Nb8 loss in 12 half-moves
3 Kb5 loss in 4 half-moves
4 Kb6 loss in 4 half-moves
5 Kc6 loss in 4 half-moves
6 Kb4 loss in 2 half-moves
7 Kc4 loss in 2 half-moves
8 Kd4 loss in 2 half-moves
9 Kd5 loss in 2 half-moves
10 Kd6 loss in 2 half-moves
11 Nc7 loss in 2 half-moves