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

EGTB: win in 16 half-moves

# move score
1 b5 win in 15 half-moves
2 Kb5 win in 15 half-moves
3 Ka5 win in 17 half-moves
4 Ka7 win in 17 half-moves
5 Kb7 win in 17 half-moves
6 Kc5 loss in 3 half-moves
7 Kc6 loss in 3 half-moves
8 Kd6 loss in 3 half-moves
9 Ke5 loss in 3 half-moves
10 Ke6 loss in 3 half-moves
11 Na8 loss in 3 half-moves
12 Kc4 loss in 2 half-moves
13 Kd4 loss in 2 half-moves
14 Ke4 loss in 2 half-moves
15 Nb5 loss in 2 half-moves
16 Ne6 loss in 2 half-moves
17 Ne8 loss in 2 half-moves