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

EGTB: win in 4 half-moves

# move score
1 Kc6 win in 3 half-moves
2 Ra8 win in 3 half-moves
3 Kc7 win in 11 half-moves
4 Ka8 draw
5 Kb8 draw
6 Kc8 draw
7 Ka5 loss in 2 half-moves
8 Kab6 loss in 2 half-moves
9 Kb5 loss in 2 half-moves
10 Kbb6 loss in 2 half-moves