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EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rb5 draw
3 Rb6 draw
4 Rb8 draw
5 Rbb7 draw
6 Rf2 draw
7 Rg2 draw
8 Rh2 draw
9 Ra1 loss in 2 half-moves
10 Ra3 loss in 2 half-moves
11 Ra4 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Ra6 loss in 2 half-moves
14 Ra8 loss in 2 half-moves
15 Raa2 loss in 2 half-moves
16 Rab7 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rba2 loss in 2 half-moves
20 Rc2 loss in 2 half-moves
21 Rc7 loss in 2 half-moves
22 Rd2 loss in 2 half-moves
23 Rd7 loss in 2 half-moves
24 Re2 loss in 2 half-moves
25 Re7 loss in 2 half-moves
26 Rf7 loss in 2 half-moves
27 Rg7 loss in 2 half-moves
28 Rh7 loss in 2 half-moves