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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 Ra4 draw
5 Rd8 draw
6 Re8 draw
7 Rf8 draw
8 Rh8 draw
9 Kc5 loss in 2 half-moves
10 Kc6 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Kf5 loss in 2 half-moves
15 Kf7 loss in 2 half-moves
16 Kg5 loss in 2 half-moves
17 Kg6 loss in 2 half-moves
18 Kg7 loss in 2 half-moves
19 Ra3 loss in 2 half-moves
20 Ra5 loss in 2 half-moves
21 Ra6 loss in 2 half-moves
22 Ra7 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rc8 loss in 2 half-moves
25 Kde5 loss in 1 half-moves
26 Kde6 loss in 1 half-moves
27 Kde7 loss in 1 half-moves
28 Kfe5 loss in 1 half-moves
29 Kfe6 loss in 1 half-moves
30 Kfe7 loss in 1 half-moves