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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rc6 draw
3 Rd6 draw
4 Re6 draw
5 Rf6 draw
6 Rg2 draw
7 Rg3 draw
8 Rg4 draw
9 K2d3 loss in 2 half-moves
10 K2e3 loss in 2 half-moves
11 K2f3 loss in 2 half-moves
12 K4d3 loss in 2 half-moves
13 K4e3 loss in 2 half-moves
14 K4f3 loss in 2 half-moves
15 Kd1 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Ke1 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Kf1 loss in 2 half-moves
22 Kf2 loss in 2 half-moves
23 Kf4 loss in 2 half-moves
24 Kf5 loss in 2 half-moves
25 Ra6 loss in 2 half-moves
26 Rb6 loss in 2 half-moves
27 Rg5 loss in 2 half-moves
28 Rg7 loss in 2 half-moves
29 Rg8 loss in 2 half-moves
30 Rh6 loss in 2 half-moves