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

EGTB: draw

# move score
1 Ka5 draw
2 Ka6 draw
3 Kaa7 draw
4 Kab7 draw
5 Kb8 draw
6 Kba7 draw
7 Kbb7 draw
8 Kc6 draw
9 Kc7 draw
10 Kb5 loss in 2 half-moves
11 Kc5 loss in 2 half-moves