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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kh6 draw
3 Kh7 draw
4 Kh8 draw
5 Rc4 draw
6 Rh8 draw
7 Ke1 loss in 2 half-moves
8 Ke2 loss in 2 half-moves
9 Ke3 loss in 2 half-moves
10 Kf1 loss in 2 half-moves
11 Kf3 loss in 2 half-moves
12 Kf6 loss in 2 half-moves
13 Kf7 loss in 2 half-moves
14 Kf8 loss in 2 half-moves
15 Kg1 loss in 2 half-moves
16 Kg2 loss in 2 half-moves
17 Kg3 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Kg8 loss in 2 half-moves
20 Ra8 loss in 2 half-moves
21 Rb8 loss in 2 half-moves
22 Rc1 loss in 2 half-moves
23 Rc2 loss in 2 half-moves
24 Rc3 loss in 2 half-moves
25 Rc5 loss in 2 half-moves
26 Rc6 loss in 2 half-moves
27 Rc7 loss in 2 half-moves
28 Rd8 loss in 2 half-moves
29 Re8 loss in 2 half-moves
30 Rf8 loss in 2 half-moves