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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 K6b7 draw
3 K6d6 draw
4 K6d7 draw
5 K7b7 draw
6 K7d6 draw
7 K7d7 draw
8 Kb8 draw
9 Kc8 draw
10 Kd8 draw
11 Ra1 draw
12 Re1 draw
13 Rf1 draw
14 Rg6 draw
15 Rg7 draw
16 Rh1 draw
17 K6b6 loss in 2 half-moves
18 K7b6 loss in 2 half-moves
19 Kb5 loss in 2 half-moves
20 Kc5 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Rb1 loss in 2 half-moves
23 Rc1 loss in 2 half-moves
24 Rd1 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rg4 loss in 2 half-moves
28 Rg5 loss in 2 half-moves