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EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Kc3 draw
3 Kd3 draw
4 Ke3 draw
5 Rb3 draw
6 Rb4 draw
7 Rb6 draw
8 Rb7 draw
9 Rb8 draw
10 Rf2 draw
11 Rg2 draw
12 Rh2 draw
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Ke4 loss in 2 half-moves
17 Ke5 loss in 2 half-moves
18 Kg5 loss in 2 half-moves
19 Kg6 loss in 2 half-moves
20 Kg7 loss in 2 half-moves
21 Kh5 loss in 2 half-moves
22 Kh7 loss in 2 half-moves
23 Ra2 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rc2 loss in 2 half-moves
26 Rd2 loss in 2 half-moves
27 Re2 loss in 2 half-moves