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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kd6 draw
3 Kd7 draw
4 Kf6 draw
5 Kf7 draw
6 Ra8 draw
7 Rc8 draw
8 Re8 draw
9 Rg6 draw
10 Rh8 draw
11 Kf8 loss in 8 half-moves
12 Ke6 loss in 6 half-moves
13 Kd8 loss in 4 half-moves
14 Ke8 loss in 4 half-moves
15 Rg4 loss in 4 half-moves
16 Rg5 loss in 4 half-moves
17 Rg7 loss in 4 half-moves
18 Rd8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rg2 loss in 2 half-moves
22 Rg3 loss in 2 half-moves