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

EGTB: win in 4 half-moves

# move score
1 Ra5 win in 3 half-moves
2 Ra6 win in 11 half-moves
3 Ka3 loss in 2 half-moves
4 Ka5 loss in 2 half-moves
5 Ka7 loss in 2 half-moves
6 Kb3 loss in 2 half-moves
7 Kb4 loss in 2 half-moves
8 Kb5 loss in 2 half-moves
9 Kb7 loss in 2 half-moves
10 Ra7 loss in 2 half-moves
11 Kc7 loss in 1 half-moves
12 Kc8 loss in 1 half-moves