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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kf6 draw
3 Kf8 draw
4 Kg6 draw
5 Kg8 draw
6 Kh6 draw
7 Kh8 draw
8 Ra5 draw
9 Rb1 draw
10 Rb6 draw
11 Rb8 draw
12 Kc7 loss in 2 half-moves
13 Kc8 loss in 2 half-moves
14 Kd7 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Ke8 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Kh7 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rc5 loss in 2 half-moves
23 Rd5 loss in 2 half-moves
24 Re5 loss in 2 half-moves
25 Rf5 loss in 2 half-moves
26 Rg5 loss in 2 half-moves
27 Rh5 loss in 2 half-moves