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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ka7 draw
3 Ka8 draw
4 Ra6 draw
5 Rc6 draw
6 Rd6 draw
7 Re6 draw
8 Rf6 draw
9 Rg2 draw
10 Rg3 draw
11 Rg4 draw
12 Rg5 draw
13 Kb3 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Kb5 loss in 2 half-moves
16 Kb7 loss in 2 half-moves
17 Kc3 loss in 2 half-moves
18 Kc5 loss in 2 half-moves
19 Kc7 loss in 2 half-moves
20 Kc8 loss in 2 half-moves
21 Kd3 loss in 2 half-moves
22 Kd4 loss in 2 half-moves
23 Kd5 loss in 2 half-moves
24 Rg1 loss in 2 half-moves
25 Rg7 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh6 loss in 2 half-moves