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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Rg8 win in 3 half-moves
3 K6a7 draw
4 K6b7 draw
5 K6c7 draw
6 K8a7 draw
7 K8b7 draw
8 K8c7 draw
9 Ka6 draw
10 Ka8 draw
11 Rd1 draw
12 Re1 draw
13 Rf1 draw
14 Rg7 draw
15 Rh1 draw
16 Ka5 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Kc5 loss in 2 half-moves
19 Kc6 loss in 2 half-moves
20 Kc8 loss in 2 half-moves
21 Ra1 loss in 2 half-moves
22 Rb1 loss in 2 half-moves
23 Rc1 loss in 2 half-moves
24 Rg2 loss in 2 half-moves
25 Rg3 loss in 2 half-moves
26 Rg4 loss in 2 half-moves
27 Rg5 loss in 2 half-moves