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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ra2 draw
3 Rag4 draw
4 Rd8 draw
5 Re8 draw
6 Rf4 draw
7 Rf8 draw
8 Rg5 draw
9 Rg6 draw
10 Rg7 draw
11 Ka7 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Rc8 loss in 2 half-moves
22 Rd4 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rg1 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rgg4 loss in 2 half-moves
28 Rh4 loss in 2 half-moves
29 Rh8 loss in 2 half-moves