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

EGTB: win in 4 half-moves

# move score
1 K7b8 win in 3 half-moves
2 K8b8 win in 3 half-moves
3 Ka6 draw
4 K7b7 loss in 2 half-moves
5 K8b7 loss in 2 half-moves
6 Kb6 loss in 2 half-moves