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

EGTB: draw

# move score
1 Rb8 draw
2 Rg3 draw
3 Rg4 draw
4 Rg5 draw
5 Rg6 draw
6 Kc1 loss in 2 half-moves
7 Kc2 loss in 2 half-moves
8 Kd2 loss in 2 half-moves
9 Ke1 loss in 2 half-moves
10 Ke2 loss in 2 half-moves
11 Ra8 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
16 Rg1 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rg7 loss in 2 half-moves
19 Rh8 loss in 2 half-moves