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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 Rd2 draw
3 Rd3 draw
4 Rd4 draw
5 Ka6 loss in 2 half-moves
6 Kaa8 loss in 2 half-moves
7 Kab7 loss in 2 half-moves
8 Kb6 loss in 2 half-moves
9 Kba8 loss in 2 half-moves
10 Kbb7 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kc8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd1 loss in 2 half-moves
15 Rd5 loss in 2 half-moves
16 Rd6 loss in 2 half-moves
17 Rd7 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves