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 Kc6 loss in 4 half-moves
5 Kcc7 loss in 4 half-moves
6 Kd6 loss in 4 half-moves
7 Kdd8 loss in 4 half-moves
8 Ke6 loss in 4 half-moves
9 Ke7 loss in 4 half-moves
10 Ke8 loss in 4 half-moves
11 Kcd8 loss in 3 half-moves
12 Kdc7 loss in 3 half-moves