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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Ka8 loss in 2 half-moves
3 Kaa7 loss in 2 half-moves
4 Kb8 loss in 2 half-moves
5 Kba7 loss in 2 half-moves
6 Kc6 loss in 2 half-moves
7 Kc7 loss in 2 half-moves
8 Kc8 loss in 2 half-moves
9 b5 loss in 1 half-moves
10 Ka5 loss in 1 half-moves