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

EGTB: win in 2 half-moves

# move score
1 b5 win in 1 half-moves
2 Kd8 win in 11 half-moves
3 Kc8 draw
4 Kc7 loss in 2 half-moves
5 Kd6 loss in 2 half-moves
6 Ke7 loss in 2 half-moves
7 Ke8 loss in 2 half-moves
8 Kc6 loss in 1 half-moves
9 Ke6 loss in 1 half-moves