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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Kb7 draw
3 Kg3 draw
4 Kh3 draw
5 Ra8 draw
6 Rg3 draw
7 Kb5 loss in 2 half-moves
8 Kb6 loss in 2 half-moves
9 Kc5 loss in 2 half-moves
10 Kc7 loss in 2 half-moves
11 Kd5 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Kg4 loss in 2 half-moves
15 Kg5 loss in 2 half-moves
16 Kh5 loss in 2 half-moves
17 Rb8 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rd8 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rg1 loss in 2 half-moves
23 Rg2 loss in 2 half-moves
24 Rg4 loss in 2 half-moves
25 Rg5 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh8 loss in 2 half-moves