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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kc6 draw
3 Kc7 draw
4 Kc8 draw
5 Kd8 draw
6 Kde7 draw
7 Kde8 draw
8 Kf8 draw
9 Kfe7 draw
10 Kfe8 draw
11 Kg8 draw
12 Ra2 draw
13 Rb1 draw
14 Rb7 draw
15 Rc2 draw
16 Rd2 draw
17 Rh2 draw
18 Kd6 loss in 2 half-moves
19 Kde6 loss in 2 half-moves
20 Kf6 loss in 2 half-moves
21 Kfe6 loss in 2 half-moves
22 Kg6 loss in 2 half-moves
23 Kg7 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rb4 loss in 2 half-moves
26 Rb5 loss in 2 half-moves
27 Rb6 loss in 2 half-moves
28 Re2 loss in 2 half-moves
29 Rf2 loss in 2 half-moves
30 Rg2 loss in 2 half-moves