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

EGTB: win in 4 half-moves

# move score
1 Kcb7 win in 3 half-moves
2 Kb5 win in 7 half-moves
3 Kb8 win in 9 half-moves
4 Kb6 win in 11 half-moves
5 Ka5 draw
6 Ka7 draw
7 Kab7 draw
8 Kd8 draw
9 Ra7 draw
10 Rb8 draw
11 Kc7 loss in 2 half-moves
12 Kd7 loss in 2 half-moves