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 Rc8 win in 3 half-moves
3 Rd8 win in 3 half-moves
4 Ra8 draw
5 Re8 draw
6 Rf8 draw
7 Rg3 draw
8 Rg4 draw
9 Rg5 draw
10 Rg7 draw
11 Kb1 loss in 2 half-moves
12 Kb2 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Kb5 loss in 2 half-moves
16 Kb6 loss in 2 half-moves
17 Kc1 loss in 2 half-moves
18 Kc3 loss in 2 half-moves
19 Kc4 loss in 2 half-moves
20 Kc6 loss in 2 half-moves
21 Kd1 loss in 2 half-moves
22 Kd2 loss in 2 half-moves
23 Kd3 loss in 2 half-moves
24 Kd4 loss in 2 half-moves
25 Kd5 loss in 2 half-moves
26 Kd6 loss in 2 half-moves
27 Rg1 loss in 2 half-moves
28 Rg2 loss in 2 half-moves
29 Rg6 loss in 2 half-moves
30 Rh8 loss in 2 half-moves