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

EGTB: win in 4 half-moves

# move score
1 Na6 win in 3 half-moves
2 Nd7 loss in 46 half-moves
3 Kc7 loss in 12 half-moves
4 Ke7 loss in 12 half-moves
5 Kc6 loss in 10 half-moves
6 Kd5 loss in 10 half-moves
7 Kd7 loss in 10 half-moves
8 Ke6 loss in 8 half-moves
9 Kc5 loss in 2 half-moves
10 Ke5 loss in 2 half-moves
11 Nc6 loss in 2 half-moves