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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ke4 draw
3 Ke5 draw
4 Ra6 draw
5 Rc6 draw
6 Rd6 draw
7 Re6 draw
8 Rg1 draw
9 Rg2 draw
10 Rg3 draw
11 Rh6 draw
12 Kb7 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kc5 loss in 2 half-moves
16 Kc6 loss in 2 half-moves
17 Kc7 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Kd6 loss in 2 half-moves
20 Kd7 loss in 2 half-moves
21 Kd8 loss in 2 half-moves
22 Rf6 loss in 2 half-moves
23 Rg4 loss in 2 half-moves
24 Rg5 loss in 2 half-moves
25 Rg7 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Ke6 loss in 1 half-moves