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EGTB: win in 12 half-moves

# move score
1 Rg8 win in 11 half-moves
2 Ra4 draw
3 Rb4 draw
4 Rf4 draw
5 Rg1 draw
6 Rg5 draw
7 Rg6 draw
8 Rg7 draw
9 K7b7 loss in 2 half-moves
10 K7b8 loss in 2 half-moves
11 K8b7 loss in 2 half-moves
12 K8b8 loss in 2 half-moves
13 Ka6 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rd4 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rh4 loss in 2 half-moves