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

EGTB: win in 4 half-moves

# move score
1 Kc6 win in 3 half-moves
2 Kb6 draw
3 Kd7 draw
4 Kd8 draw
5 Kb7 loss in 44 half-moves
6 Kb8 loss in 36 half-moves
7 Kc8 loss in 36 half-moves
8 Kd6 loss in 2 half-moves