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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Kc6 win in 3 half-moves
3 Kc4 win in 5 half-moves
4 Kb4 win in 7 half-moves
5 Kb6 win in 7 half-moves
6 Nf6 win in 7 half-moves
7 Nh6 win in 7 half-moves
8 Ka4 draw
9 Ka5 draw
10 Ka6 draw
11 Ne7 draw