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EGTB: win in 12 half-moves

# move score
1 Rb3 win in 11 half-moves
2 Kc7 draw
3 Kd7 draw
4 Ke7 draw
5 Kg4 draw
6 Kh4 draw
7 Ra7 draw
8 Rb1 draw
9 Rb2 draw
10 Rb4 draw
11 Rb5 draw
12 Rb6 draw
13 Rg7 draw
14 Rh7 draw
15 Kc5 loss in 2 half-moves
16 Kc6 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ke6 loss in 2 half-moves
20 Kg2 loss in 2 half-moves
21 Kg3 loss in 2 half-moves
22 Kh2 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rc7 loss in 2 half-moves
25 Rd7 loss in 2 half-moves
26 Re7 loss in 2 half-moves
27 Rf7 loss in 2 half-moves