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 Kb5 draw
3 Kb6 draw
4 Kb7 draw
5 Kc5 draw
6 Na6 loss in 12 half-moves
7 Na8 loss in 12 half-moves
8 Kd7 loss in 4 half-moves
9 Kd5 loss in 2 half-moves
10 Kd6 loss in 2 half-moves
11 Nd5 loss in 2 half-moves
12 Ne6 loss in 2 half-moves
13 Ne8 loss in 2 half-moves