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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ke6 draw
3 Ke7 draw
4 Kf7 draw
5 Kg6 draw
6 Kg7 draw
7 Kh3 draw
8 Kh5 draw
9 Ra1 draw
10 Rb5 draw
11 Rb7 draw
12 Rb8 draw
13 Rc1 draw
14 Rg1 draw
15 Rh1 draw
16 Ke5 loss in 2 half-moves
17 Kf5 loss in 2 half-moves
18 Kfg5 loss in 2 half-moves
19 Kg3 loss in 2 half-moves
20 Kg4 loss in 2 half-moves
21 Khg5 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rb3 loss in 2 half-moves
24 Rb4 loss in 2 half-moves
25 Rd1 loss in 2 half-moves
26 Re1 loss in 2 half-moves
27 Rf1 loss in 2 half-moves