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

EGTB: win in 4 half-moves

# move score
1 Kd6 win in 3 half-moves
2 Ng3 loss in 20 half-moves
3 Kb6 loss in 10 half-moves
4 Kb7 loss in 10 half-moves
5 Kb8 loss in 10 half-moves
6 Kc6 loss in 10 half-moves
7 Kc8 loss in 10 half-moves
8 Kd7 loss in 8 half-moves
9 Kd8 loss in 8 half-moves
10 Nf2 loss in 2 half-moves