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

EGTB: win in 2 half-moves

# move score
1 b5 win in 1 half-moves
2 Ka6 loss in 2 half-moves
3 Kaa7 loss in 2 half-moves
4 Kab8 loss in 2 half-moves
5 Kba7 loss in 2 half-moves
6 Kbb8 loss in 2 half-moves
7 Kc6 loss in 2 half-moves
8 Kc7 loss in 2 half-moves
9 Kc8 loss in 2 half-moves
10 Nc6 loss in 2 half-moves
11 Ne6 loss in 2 half-moves
12 Nf7 loss in 2 half-moves