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

EGTB: loss in 3 half-moves

# move score
1 K7b8 loss in 2 half-moves
2 Ka6 loss in 2 half-moves
3 Kb6 loss in 2 half-moves
4 b4 loss in 1 half-moves
5 K7b7 loss in 1 half-moves
6 K8b7 loss in 1 half-moves
7 K8b8 loss in 1 half-moves