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

EGTB: win in 20 half-moves

# move score
1 b5 win in 19 half-moves
2 Kc5 loss in 4 half-moves
3 Kc8 loss in 4 half-moves
4 Kcc7 loss in 4 half-moves
5 Kd5 loss in 4 half-moves
6 Kd6 loss in 4 half-moves
7 Kd7 loss in 4 half-moves
8 Nc7 loss in 4 half-moves
9 Ka7 loss in 3 half-moves
10 Kb5 loss in 3 half-moves
11 Kbb7 loss in 3 half-moves
12 Kbc7 loss in 3 half-moves
13 Kcb7 loss in 3 half-moves