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 Kd5 win in 3 half-moves
3 Kd6 win in 3 half-moves
4 Kb5 draw
5 Kc7 loss in 12 half-moves
6 Kd7 loss in 12 half-moves
7 Kb6 loss in 2 half-moves
8 Kb7 loss in 2 half-moves