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

EGTB: loss in 5 half-moves

# move score
1 b5 loss in 4 half-moves
2 Kbb8 loss in 4 half-moves
3 Kcc8 loss in 4 half-moves
4 Kd6 loss in 4 half-moves
5 Kd7 loss in 4 half-moves
6 Kd8 loss in 4 half-moves
7 Ka6 loss in 3 half-moves
8 Ka7 loss in 3 half-moves
9 Kbc6 loss in 3 half-moves
10 Kbc8 loss in 3 half-moves
11 Kcb8 loss in 3 half-moves
12 Kcc6 loss in 3 half-moves