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

EGTB: draw

# move score
1 Ka5 draw
2 Ka6 draw
3 Ka8 draw
4 Kb8 draw
5 Kc7 draw
6 Kc8 draw
7 Ra6 draw
8 Ra8 draw
9 Ka3 loss in 2 half-moves
10 Kb3 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Kb5 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kc6 loss in 2 half-moves
15 Ra5 loss in 2 half-moves