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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kf8 draw
3 Kg8 draw
4 Kh8 draw
5 Ra1 draw
6 Rb4 draw
7 Rb5 draw
8 Rb6 draw
9 Rb8 draw
10 Rd1 draw
11 Re1 draw
12 Rf1 draw
13 Kc5 loss in 2 half-moves
14 Kc6 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ke6 loss in 2 half-moves
20 Ke7 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Kf7 loss in 2 half-moves
23 Kg6 loss in 2 half-moves
24 Kh6 loss in 2 half-moves
25 Kh7 loss in 2 half-moves
26 Rb2 loss in 2 half-moves
27 Rb3 loss in 2 half-moves
28 Rc1 loss in 2 half-moves
29 Rg1 loss in 2 half-moves
30 Rh1 loss in 2 half-moves