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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rc4 draw
3 Rd4 draw
4 Re4 draw
5 Rg5 draw
6 Rg6 draw
7 Rg7 draw
8 Rgg8 draw
9 Ra1 loss in 2 half-moves
10 Ra2 loss in 2 half-moves
11 Ra3 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Ra6 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Raa4 loss in 2 half-moves
16 Rag8 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rf4 loss in 2 half-moves
23 Rf8 loss in 2 half-moves
24 Rg2 loss in 2 half-moves
25 Rg3 loss in 2 half-moves
26 Rga4 loss in 2 half-moves
27 Rh4 loss in 2 half-moves
28 Rh8 loss in 2 half-moves