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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kg3 draw
3 Kh3 draw
4 Kh6 draw
5 Ra8 draw
6 Rb8 draw
7 Rf2 draw
8 Rf7 draw
9 Rh8 draw
10 K4g4 loss in 2 half-moves
11 K4g5 loss in 2 half-moves
12 K5g4 loss in 2 half-moves
13 K5g5 loss in 2 half-moves
14 Kg6 loss in 2 half-moves
15 Rc8 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rf4 loss in 2 half-moves
21 Rf5 loss in 2 half-moves
22 Rf6 loss in 2 half-moves