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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Kb7 draw
3 Kb8 draw
4 Ka7 loss in 4 half-moves
5 Ka4 loss in 2 half-moves
6 Ka6 loss in 2 half-moves
7 Kb4 loss in 2 half-moves
8 Kb6 loss in 2 half-moves