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

EGTB: win in 8 half-moves

# move score
1 Kb4 win in 7 half-moves
2 Kb5 win in 7 half-moves
3 Kb6 win in 7 half-moves
4 Ka4 win in 9 half-moves
5 Ka6 win in 9 half-moves
6 Kc8 win in 11 half-moves
7 Ka7 loss in 2 half-moves
8 Kb7 loss in 2 half-moves
9 Kc7 loss in 2 half-moves
10 Ra6 loss in 2 half-moves
11 Ra7 loss in 2 half-moves