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

EGTB: win in 4 half-moves

# move score
1 K5b6 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 K5a6 draw
4 K7a6 draw
5 Ka4 draw
6 Ka8 draw
7 Kb4 draw
8 K7b6 loss in 2 half-moves
9 Kb7 loss in 2 half-moves
10 Kb8 loss in 2 half-moves