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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Ka8 draw
3 Kb7 draw
4 Kb8 draw
5 Kd5 draw
6 Kd7 draw
7 Ke5 draw
8 Ke7 draw
9 Kf5 draw
10 Kf6 draw
11 Kf7 draw
12 Rc1 draw
13 Rd1 draw
14 Re1 draw
15 Rf1 draw
16 Rg5 draw
17 Rg6 draw
18 Rg8 draw
19 Rh1 draw
20 Ka6 loss in 2 half-moves
21 Kb6 loss in 2 half-moves
22 Kd6 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rg4 loss in 2 half-moves