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 5 half-moves
3 Kb2 draw
4 Kb3 draw
5 Kb4 draw
6 Kc2 draw
7 Kc4 draw
8 Kd2 draw
9 Ke1 draw
10 Ke2 draw
11 Kf1 draw
12 Kg1 draw
13 Kg2 draw
14 Ra8 draw
15 Rd8 draw
16 Rh1 draw
17 Rh2 draw
18 Rh3 draw
19 Rh7 draw
20 Kd3 loss in 2 half-moves
21 Kd4 loss in 2 half-moves
22 Ke3 loss in 2 half-moves
23 Kf3 loss in 2 half-moves
24 Kg3 loss in 2 half-moves
25 Re8 loss in 2 half-moves
26 Rf8 loss in 2 half-moves
27 Rg8 loss in 2 half-moves
28 Rh4 loss in 2 half-moves
29 Rh5 loss in 2 half-moves
30 Rh6 loss in 2 half-moves