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

EGTB: loss in 5 half-moves

# move score
1 b4 loss in 4 half-moves
2 Kb7 loss in 4 half-moves
3 Kb8 loss in 4 half-moves
4 Kc7 loss in 4 half-moves
5 Kcd7 loss in 4 half-moves
6 Kd5 loss in 4 half-moves
7 Kd6 loss in 4 half-moves
8 Kd8 loss in 4 half-moves
9 Ke5 loss in 4 half-moves
10 Ke7 loss in 4 half-moves
11 Ked7 loss in 4 half-moves
12 Kf5 loss in 2 half-moves
13 Kf6 loss in 2 half-moves
14 Kf7 loss in 2 half-moves