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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ra1 draw
3 Ra2 draw
4 Rb1 draw
5 Rb2 draw
6 Rb4 loss in 4 half-moves
7 Rc3 loss in 4 half-moves
8 Qa5 loss in 2 half-moves
9 Qa6 loss in 2 half-moves
10 Qa7 loss in 2 half-moves
11 Qa8 loss in 2 half-moves
12 Qb4 loss in 2 half-moves
13 Qb5 loss in 2 half-moves
14 Qc4 loss in 2 half-moves
15 Qc6 loss in 2 half-moves
16 Qd4 loss in 2 half-moves
17 Qd7 loss in 2 half-moves
18 Qe4 loss in 2 half-moves
19 Qe8 loss in 2 half-moves
20 Qf4 loss in 2 half-moves
21 Qg4 loss in 2 half-moves
22 Qh4 loss in 2 half-moves
23 Rb5 loss in 2 half-moves
24 Rb6 loss in 2 half-moves
25 Rb7 loss in 2 half-moves
26 Rd3 loss in 2 half-moves
27 Re3 loss in 2 half-moves
28 Rf3 loss in 2 half-moves
29 Rg3 loss in 2 half-moves
30 Rh3 loss in 2 half-moves