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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kc4 win in 5 half-moves
3 Kc5 win in 5 half-moves
4 Ka4 win in 7 half-moves
5 Ka5 win in 7 half-moves
6 Nf6 win in 7 half-moves
7 Kb6 win in 9 half-moves
8 Kc6 win in 11 half-moves
9 Nd6 win in 17 half-moves
10 Ka6 draw
11 Nc7 draw
12 Ng7 draw