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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Kb8 draw
3 Kc8 draw
4 Kd8 draw
5 Ra1 draw
6 Rb4 draw
7 Rb5 draw
8 Rb7 draw
9 Rb8 draw
10 Rc1 draw
11 Rd1 draw
12 Re1 draw
13 Kb6 loss in 2 half-moves
14 Kb7 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Kf4 loss in 2 half-moves
19 Kf5 loss in 2 half-moves
20 Kf6 loss in 2 half-moves
21 Kg4 loss in 2 half-moves
22 Kg6 loss in 2 half-moves
23 Kh4 loss in 2 half-moves
24 Kh5 loss in 2 half-moves
25 Kh6 loss in 2 half-moves
26 Rb2 loss in 2 half-moves
27 Rb3 loss in 2 half-moves
28 Rf1 loss in 2 half-moves
29 Rg1 loss in 2 half-moves
30 Rh1 loss in 2 half-moves