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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Ra1 draw
3 Ra2 draw
4 Ra3 draw
5 Ra4 draw
6 Rd8 draw
7 Re8 draw
8 Rf8 draw
9 Rh8 draw
10 Kd5 loss in 2 half-moves
11 Kd6 loss in 2 half-moves
12 Kd7 loss in 2 half-moves
13 Kee5 loss in 2 half-moves
14 Kee7 loss in 2 half-moves
15 Kef5 loss in 2 half-moves
16 Kef7 loss in 2 half-moves
17 Kfe5 loss in 2 half-moves
18 Kfe7 loss in 2 half-moves
19 Kff5 loss in 2 half-moves
20 Kff7 loss in 2 half-moves
21 Kg5 loss in 2 half-moves
22 Kg6 loss in 2 half-moves
23 Kg7 loss in 2 half-moves
24 Ra5 loss in 2 half-moves
25 Ra6 loss in 2 half-moves
26 Ra7 loss in 2 half-moves
27 Rb8 loss in 2 half-moves
28 Rc8 loss in 2 half-moves