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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Kh3 draw
3 Rb5 draw
4 Rc5 draw
5 Rd5 draw
6 Rg3 draw
7 Rg6 draw
8 Rg7 draw
9 Rg8 draw
10 Kd1 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Ke2 loss in 2 half-moves
13 Kf1 loss in 2 half-moves
14 Kf2 loss in 2 half-moves
15 Kg4 loss in 2 half-moves
16 Kh5 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rg2 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rh5 loss in 2 half-moves
23 Kg3 loss in 1 half-moves