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EGTB: win in 4 half-moves

# move score
1 Rh8 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 Rg8 draw
10 Kf5 loss in 2 half-moves
11 Kf6 loss in 2 half-moves
12 Kf7 loss in 2 half-moves
13 Kg1 loss in 2 half-moves
14 Kg2 loss in 2 half-moves
15 Kg3 loss in 2 half-moves
16 Kg5 loss in 2 half-moves
17 Kg7 loss in 2 half-moves
18 Kh1 loss in 2 half-moves
19 Kh3 loss in 2 half-moves
20 Kh5 loss in 2 half-moves
21 Kh6 loss in 2 half-moves
22 Kh7 loss in 2 half-moves
23 Ra5 loss in 2 half-moves
24 Ra6 loss in 2 half-moves
25 Ra7 loss in 2 half-moves
26 Rb8 loss in 2 half-moves
27 Rc8 loss in 2 half-moves