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 Ka6 loss in 2 half-moves
3 Kaa8 loss in 2 half-moves
4 Kab7 loss in 2 half-moves
5 Kba8 loss in 2 half-moves
6 Kbb7 loss in 2 half-moves
7 Kc7 loss in 2 half-moves
8 Kc8 loss in 2 half-moves