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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Ka3 draw
4 Kb4 draw
5 Kc5 draw
6 Kc6 draw
7 Kc7 draw
8 Kd5 draw
9 Kd7 draw
10 Ra2 draw
11 Rb1 draw
12 Rb3 draw
13 Rb8 draw
14 Rf2 draw
15 Ka5 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Ke5 loss in 2 half-moves
18 Ke6 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rc2 loss in 2 half-moves
23 Rd2 loss in 2 half-moves
24 Re2 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rh2 loss in 2 half-moves
27 Kb3 loss in 1 half-moves