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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kb6 draw
3 Kc6 draw
4 Kd6 draw
5 Rb6 draw
6 Rf3 draw
7 Kb7 loss in 2 half-moves
8 Kb8 loss in 2 half-moves
9 Kc8 loss in 2 half-moves
10 Kd7 loss in 2 half-moves
11 Kd8 loss in 2 half-moves
12 Kg7 loss in 2 half-moves
13 Kg8 loss in 2 half-moves
14 Kh7 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Rb1 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rc3 loss in 2 half-moves
22 Rd3 loss in 2 half-moves
23 Re3 loss in 2 half-moves
24 Rg3 loss in 2 half-moves
25 Rh3 loss in 2 half-moves