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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ra8 draw
3 Rc8 draw
4 Rd8 draw
5 Re8 draw
6 Rf8 draw
7 Rg1 draw
8 Rg2 draw
9 Rg3 draw
10 Rg4 draw
11 Ka1 loss in 2 half-moves
12 Ka3 loss in 2 half-moves
13 Ka5 loss in 2 half-moves
14 Ka7 loss in 2 half-moves
15 Kb1 loss in 2 half-moves
16 Kb2 loss in 2 half-moves
17 Kb3 loss in 2 half-moves
18 Kb5 loss in 2 half-moves
19 Kb6 loss in 2 half-moves
20 Kb7 loss in 2 half-moves
21 Rg5 loss in 2 half-moves
22 Rg6 loss in 2 half-moves
23 Rg7 loss in 2 half-moves
24 Rh8 loss in 2 half-moves