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

EGTB: win in 4 half-moves

# move score
1 Nb3 win in 3 half-moves
2 Nc6 win in 3 half-moves
3 Kb4 loss in 12 half-moves
4 Kb5 loss in 12 half-moves
5 Kc4 loss in 10 half-moves
6 Kb6 loss in 8 half-moves
7 Kc6 loss in 2 half-moves
8 Kd5 loss in 2 half-moves
9 Nb7 loss in 2 half-moves
10 Nc4 loss in 2 half-moves
11 Kd4 loss in 1 half-moves
12 Kd6 loss in 1 half-moves