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 Kb8 win in 5 half-moves
3 Ra6 draw
4 Ka3 loss in 2 half-moves
5 Ka5 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 Kc7 loss in 2 half-moves
11 Ra7 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Kd7 loss in 1 half-moves
14 Kd8 loss in 1 half-moves