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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Ra1 draw
3 Rg5 draw
4 Kd4 loss in 2 half-moves
5 Kd5 loss in 2 half-moves
6 Kd6 loss in 2 half-moves
7 Ke3 loss in 2 half-moves
8 Ke6 loss in 2 half-moves
9 Kee4 loss in 2 half-moves
10 Kef5 loss in 2 half-moves
11 Kf3 loss in 2 half-moves
12 Kf6 loss in 2 half-moves
13 Kfe4 loss in 2 half-moves
14 Kff5 loss in 2 half-moves
15 Kg3 loss in 2 half-moves
16 Kg4 loss in 2 half-moves
17 Kg5 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rc1 loss in 2 half-moves
20 Rd1 loss in 2 half-moves
21 Re1 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rg2 loss in 2 half-moves
24 Rg3 loss in 2 half-moves
25 Rg6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rg8 loss in 2 half-moves
28 Rh1 loss in 2 half-moves