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

EGTB: draw

# move score
1 Ka3 draw
2 Ka5 draw
3 Ka7 draw
4 Ka8 draw
5 Kb5 draw
6 Kb7 draw
7 Kc7 draw
8 Kc8 draw
9 Kb3 loss in 2 half-moves
10 Kb4 loss in 2 half-moves