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

EGTB: win in 4 half-moves

# move score
1 Nb1 win in 3 half-moves
2 Kb6 loss in 2 half-moves
3 Kb7 loss in 2 half-moves
4 Kb8 loss in 2 half-moves
5 Kc6 loss in 2 half-moves
6 Kc8 loss in 2 half-moves
7 Kd6 loss in 2 half-moves
8 Kd7 loss in 2 half-moves
9 Kd8 loss in 2 half-moves
10 Nb5 loss in 2 half-moves
11 Nd1 loss in 2 half-moves
12 Nd5 loss in 2 half-moves
13 Na2 loss in 1 half-moves
14 Na4 loss in 1 half-moves
15 Ne2 loss in 1 half-moves
16 Ne4 loss in 1 half-moves