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

EGTB: win in 2 half-moves

# move score
1 Kd5 win in 1 half-moves
2 Kd6 win in 1 half-moves
3 Kd7 win in 1 half-moves
4 Kb5 loss in 30 half-moves
5 Kb6 loss in 28 half-moves
6 Kb7 loss in 22 half-moves
7 Kc5 loss in 2 half-moves
8 Kc7 loss in 2 half-moves