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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Ra8 draw
3 Rd1 draw
4 Rd2 draw
5 Rd3 draw
6 Rd4 draw
7 Re8 draw
8 Rf8 draw
9 Rh8 draw
10 Ke5 loss in 2 half-moves
11 Ke6 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Kf5 loss in 2 half-moves
14 Kf7 loss in 2 half-moves
15 Kfg5 loss in 2 half-moves
16 Kfg6 loss in 2 half-moves
17 Kg4 loss in 2 half-moves
18 Kg7 loss in 2 half-moves
19 Kh4 loss in 2 half-moves
20 Kh6 loss in 2 half-moves
21 Khg5 loss in 2 half-moves
22 Khg6 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rc8 loss in 2 half-moves
25 Rd5 loss in 2 half-moves
26 Rd6 loss in 2 half-moves
27 Rd7 loss in 2 half-moves