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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rg3 win in 3 half-moves
3 Rb8 draw
4 Rd8 draw
5 Re8 draw
6 Rf8 draw
7 Rg2 draw
8 Rg4 draw
9 Rg5 draw
10 Ke1 loss in 2 half-moves
11 Ke2 loss in 2 half-moves
12 Ke3 loss in 2 half-moves
13 Kf1 loss in 2 half-moves
14 Kf3 loss in 2 half-moves
15 Kfg1 loss in 2 half-moves
16 Kfg2 loss in 2 half-moves
17 Kfg3 loss in 2 half-moves
18 Kh1 loss in 2 half-moves
19 Kh3 loss in 2 half-moves
20 Khg1 loss in 2 half-moves
21 Khg2 loss in 2 half-moves
22 Khg3 loss in 2 half-moves
23 Ra8 loss in 2 half-moves
24 Rc8 loss in 2 half-moves
25 Rg6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh8 loss in 2 half-moves