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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kb8 draw
5 Kc8 draw
6 Kd7 draw
7 Kd8 draw
8 Ke7 draw
9 Ke8 draw
10 Kf8 draw
11 Kg7 draw
12 Kg8 draw
13 Ra2 draw
14 Rg1 draw
15 Rg7 draw
16 Rh2 draw
17 Kc6 loss in 2 half-moves
18 Kd6 loss in 2 half-moves
19 Ke6 loss in 2 half-moves
20 Kf6 loss in 2 half-moves
21 Kg6 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rc2 loss in 2 half-moves
24 Rd2 loss in 2 half-moves
25 Re2 loss in 2 half-moves
26 Rf2 loss in 2 half-moves
27 Rg3 loss in 2 half-moves
28 Rg4 loss in 2 half-moves
29 Rg5 loss in 2 half-moves
30 Rg6 loss in 2 half-moves