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EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Kf7 draw
4 Kg7 draw
5 Kh7 draw
6 Ra2 draw
7 Rb1 draw
8 Rb7 draw
9 Rb8 draw
10 Rf2 draw
11 Rg2 draw
12 Rh2 draw
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kd4 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Ke4 loss in 2 half-moves
19 Ke5 loss in 2 half-moves
20 Ke6 loss in 2 half-moves
21 Kf5 loss in 2 half-moves
22 Kf6 loss in 2 half-moves
23 Kg5 loss in 2 half-moves
24 Kh5 loss in 2 half-moves
25 Kh6 loss in 2 half-moves
26 Rb3 loss in 2 half-moves
27 Rb4 loss in 2 half-moves
28 Rc2 loss in 2 half-moves
29 Rd2 loss in 2 half-moves
30 Re2 loss in 2 half-moves