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

EGTB: win in 12 half-moves

# move score
1 Kc7 win in 11 half-moves
2 Nb3 win in 11 half-moves
3 Kb7 win in 13 half-moves
4 Nc2 win in 13 half-moves
5 Kb8 win in 17 half-moves
6 Kd8 loss in 4 half-moves
7 Kd7 loss in 2 half-moves