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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rc3 draw
3 Rg7 draw
4 Rgh8 draw
5 Rh1 draw
6 Rh6 draw
7 Rh7 draw
8 Rhg3 draw
9 Rhh8 draw
10 Ra3 loss in 2 half-moves
11 Ra8 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd3 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re3 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg2 loss in 2 half-moves
22 Rg4 loss in 2 half-moves
23 Rg5 loss in 2 half-moves
24 Rg6 loss in 2 half-moves
25 Rgg3 loss in 2 half-moves
26 Rh2 loss in 2 half-moves
27 Rh4 loss in 2 half-moves
28 Rh5 loss in 2 half-moves