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 Kb2 loss in 4 half-moves
3 Kb3 loss in 4 half-moves
4 Kb4 loss in 4 half-moves
5 Kc2 loss in 4 half-moves
6 Kc4 loss in 4 half-moves
7 Kd2 loss in 2 half-moves
8 Kd3 loss in 2 half-moves
9 Kd4 loss in 2 half-moves