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

EGTB: draw

# move score
1 Ka6 draw
2 Ka7 draw
3 Kb8 draw
4 Kbb7 draw
5 Kbc7 draw
6 Kc6 draw
7 Kd7 draw
8 Kd8 draw
9 Ka5 loss in 2 half-moves
10 Kcb7 loss in 2 half-moves
11 Kcc7 loss in 2 half-moves
12 Kb5 loss in 1 half-moves
13 Kc5 loss in 1 half-moves