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EGTB: win in 4 half-moves

# move score
1 Rg3 win in 3 half-moves
2 Ka1 draw
3 Kb1 draw
4 Ra8 draw
5 Rb8 draw
6 Rc8 draw
7 Rg1 draw
8 Rg2 draw
9 Rg4 draw
10 Rg5 draw
11 Ka3 loss in 2 half-moves
12 Kb2 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Ke3 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Kf3 loss in 2 half-moves
20 Kf4 loss in 2 half-moves
21 Kf5 loss in 2 half-moves
22 Rd8 loss in 2 half-moves
23 Re8 loss in 2 half-moves
24 Rf8 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