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

EGTB: draw

# move score
1 Ka2 draw
2 Ka3 draw
3 Ka4 draw
4 Ka5 draw
5 Kb1 draw
6 Kb2 draw
7 Kb3 draw
8 Kc3 draw
9 Kc4 draw
10 Kb5 loss in 2 half-moves
11 Kc5 loss in 2 half-moves