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

EGTB: win in 2 half-moves

# move score
1 b4 win in 1 half-moves
2 Ka7 win in 1 half-moves
3 Kb7 win in 1 half-moves
4 Ka5 loss in 1 half-moves
5 Kb6 loss in 1 half-moves
6 Kc5 loss in 1 half-moves
7 Kc6 loss in 1 half-moves
8 Kc7 loss in 1 half-moves
9 Kd5 loss in 1 half-moves
10 Kd7 loss in 1 half-moves
11 Ke5 loss in 1 half-moves
12 Ke6 loss in 1 half-moves
13 Ke7 loss in 1 half-moves
14 Na3 loss in 1 half-moves
15 Na5 loss in 1 half-moves
16 Nb2 loss in 1 half-moves
17 Nb6 loss in 1 half-moves
18 Nd2 loss in 1 half-moves
19 Ne3 loss in 1 half-moves
20 Ne5 loss in 1 half-moves