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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 Ra1 draw
4 Rb1 draw
5 Rc1 draw
6 Rg4 draw
7 Rg5 draw
8 Rg7 draw
9 Ka5 loss in 2 half-moves
10 Kb5 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kb8 loss in 2 half-moves
13 Rd1 loss in 2 half-moves
14 Re1 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rg2 loss in 2 half-moves
17 Rg3 loss in 2 half-moves
18 Rh1 loss in 2 half-moves
19 K6a7 loss in 1 half-moves
20 K6b7 loss in 1 half-moves
21 K8a7 loss in 1 half-moves
22 K8b7 loss in 1 half-moves