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

EGTB: win in 4 half-moves

# move score
1 Ka6 win in 3 half-moves
2 Ka7 loss in 40 half-moves
3 Kb8 loss in 40 half-moves
4 Kc7 loss in 40 half-moves
5 Kc8 loss in 40 half-moves
6 Ka8 loss in 36 half-moves
7 Kb6 loss in 2 half-moves
8 Kc6 loss in 2 half-moves