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

EGTB: win in 2 half-moves

# move score
1 b3 win in 1 half-moves
2 Ka6 win in 1 half-moves
3 Ka7 win in 1 half-moves
4 Kb5 win in 1 half-moves
5 Kb7 win in 1 half-moves
6 Kc6 win in 1 half-moves
7 Kc7 win in 1 half-moves
8 Ka5 loss in 1 half-moves
9 Kc5 loss in 1 half-moves