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

EGTB: draw

# move score
1 Rg4 draw
2 Rg5 draw
3 Rg6 draw
4 Rh8 draw
5 Kaa2 loss in 2 half-moves
6 Kab2 loss in 2 half-moves
7 Kba2 loss in 2 half-moves
8 Kbb2 loss in 2 half-moves
9 Kc1 loss in 2 half-moves
10 Kc2 loss in 2 half-moves
11 Ra8 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg1 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rg7 loss in 2 half-moves