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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Ra1 draw
3 Ra2 draw
4 Ra3 draw
5 Ra4 draw
6 Rd6 draw
7 Re6 draw
8 Rf6 draw
9 Rh6 draw
10 K3g3 loss in 2 half-moves
11 K3g4 loss in 2 half-moves
12 K4g3 loss in 2 half-moves
13 K4g4 loss in 2 half-moves
14 Kg2 loss in 2 half-moves
15 Kg5 loss in 2 half-moves
16 Kh2 loss in 2 half-moves
17 Kh5 loss in 2 half-moves
18 Ra5 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Ra8 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rc6 loss in 2 half-moves