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EGTB: win in 4 half-moves

# move score
1 Rg2 win in 3 half-moves
2 Kh4 draw
3 Khg4 draw
4 Rg1 draw
5 Rg3 draw
6 Rg7 draw
7 Rg8 draw
8 Rh5 loss in 6 half-moves
9 Kg2 loss in 4 half-moves
10 Kg3 loss in 4 half-moves
11 Kh2 loss in 4 half-moves
12 Ke4 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Kf4 loss in 2 half-moves
16 Kf6 loss in 2 half-moves
17 Kfg4 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Rg4 loss in 2 half-moves
20 Rg6 loss in 2 half-moves