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 Kb4 win in 1 half-moves
3 Kd4 win in 1 half-moves
4 Kb3 loss in 2 half-moves
5 Kc3 loss in 2 half-moves
6 Kc5 loss in 2 half-moves
7 Kd3 loss in 2 half-moves
8 Kd5 loss in 2 half-moves
9 Kb7 loss in 1 half-moves
10 Kb8 loss in 1 half-moves
11 Kc7 loss in 1 half-moves
12 Kd7 loss in 1 half-moves
13 Kd8 loss in 1 half-moves