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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kf6 draw
3 Kg6 draw
4 Kh6 draw
5 Ra4 draw
6 Rb1 draw
7 Rb6 draw
8 Rb8 draw
9 Re4 draw
10 Rf4 draw
11 Rg4 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 Kf8 loss in 2 half-moves
19 Kg8 loss in 2 half-moves
20 Kh7 loss in 2 half-moves
21 Kh8 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rb3 loss in 2 half-moves
24 Rb5 loss in 2 half-moves
25 Rc4 loss in 2 half-moves
26 Rd4 loss in 2 half-moves
27 Rh4 loss in 2 half-moves