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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Rb3 draw
3 Rb4 draw
4 Rb5 draw
5 Rbb2 draw
6 Rbg1 draw
7 Rf1 draw
8 Rf2 draw
9 Rg3 draw
10 Rgg1 draw
11 Rh1 draw
12 Rh2 draw
13 Ra1 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rb8 loss in 2 half-moves
18 Rc1 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rd1 loss in 2 half-moves
21 Rd2 loss in 2 half-moves
22 Re1 loss in 2 half-moves
23 Re2 loss in 2 half-moves
24 Rg5 loss in 2 half-moves
25 Rg6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rg8 loss in 2 half-moves
28 Rgb2 loss in 2 half-moves