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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 R1b2 draw
3 R3b2 draw
4 Ra1 draw
5 Ra3 draw
6 Ra4 draw
7 Rb5 draw
8 Rc1 draw
9 Rc3 draw
10 Rc4 draw
11 Rg3 draw
12 Rg4 draw
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves
16 Rd1 loss in 2 half-moves
17 Rd3 loss in 2 half-moves
18 Rd4 loss in 2 half-moves
19 Re1 loss in 2 half-moves
20 Re3 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rf3 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rh1 loss in 2 half-moves
26 Rh3 loss in 2 half-moves
27 Rh4 loss in 2 half-moves