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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 R6b2 draw
3 R6b3 draw
4 Rd6 draw
5 Re6 draw
6 Rf6 draw
7 Rg6 draw
8 R1b2 loss in 2 half-moves
9 R1b3 loss in 2 half-moves
10 R1b4 loss in 2 half-moves
11 R1b5 loss in 2 half-moves
12 R6b4 loss in 2 half-moves
13 R6b5 loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Ra8 loss in 2 half-moves
19 Raa1 loss in 2 half-moves
20 Raa6 loss in 2 half-moves
21 Rab2 loss in 2 half-moves
22 Rb7 loss in 2 half-moves
23 Rba1 loss in 2 half-moves
24 Rba6 loss in 2 half-moves
25 Rc1 loss in 2 half-moves
26 Rc2 loss in 2 half-moves
27 Rc6 loss in 2 half-moves
28 Rd1 loss in 2 half-moves
29 Rd2 loss in 2 half-moves
30 Re1 loss in 2 half-moves
31 Re2 loss in 2 half-moves
32 Rf1 loss in 2 half-moves
33 Rf2 loss in 2 half-moves
34 Rg1 loss in 2 half-moves
35 Rg2 loss in 2 half-moves
36 Rh1 loss in 2 half-moves
37 Rh2 loss in 2 half-moves
38 Rh6 loss in 2 half-moves