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

EGTB: draw

# move score
1 Rb8 draw
2 Ra5 loss in 6 half-moves
3 Ka3 loss in 4 half-moves
4 Ka5 loss in 4 half-moves
5 Ra6 loss in 4 half-moves
6 Ra7 loss in 4 half-moves
7 Rg8 loss in 4 half-moves
8 Rh8 loss in 4 half-moves
9 Kb3 loss in 2 half-moves
10 Kb4 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Rc8 loss in 2 half-moves
13 Rd8 loss in 2 half-moves
14 Re8 loss in 2 half-moves
15 Rf8 loss in 2 half-moves