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

EGTB: draw

# move score
1 Kb5 draw
2 Kb7 draw
3 Ka8 loss in 4 half-moves
4 Kb4 loss in 4 half-moves
5 Kb8 loss in 4 half-moves
6 b5 loss in 3 half-moves
7 K5a6 loss in 3 half-moves
8 K7a6 loss in 3 half-moves
9 Ka4 loss in 3 half-moves