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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kb5 draw
3 Kb6 draw
4 Kb7 draw
5 Kc7 draw
6 Kd6 draw
7 Kd7 draw
8 Ke7 draw
9 Ke8 draw
10 Kf7 draw
11 Kg7 draw
12 Kg8 draw
13 Ra1 draw
14 Rg5 draw
15 Rg6 draw
16 Rg8 draw
17 Rh1 draw
18 Kc5 loss in 2 half-moves
19 Kd5 loss in 2 half-moves
20 Rb1 loss in 2 half-moves
21 Rc1 loss in 2 half-moves
22 Rd1 loss in 2 half-moves
23 Re1 loss in 2 half-moves
24 Rf1 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