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EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Kg7 draw
3 Kh7 draw
4 Rb2 draw
5 Rc2 draw
6 Rd2 draw
7 Rf2 draw
8 Rg3 draw
9 Rg4 draw
10 Rg6 draw
11 Rg7 draw
12 Rg8 draw
13 Kb4 loss in 2 half-moves
14 Kb5 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Kc6 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Kd5 loss in 2 half-moves
20 Kd6 loss in 2 half-moves
21 Kg5 loss in 2 half-moves
22 Kg6 loss in 2 half-moves
23 Kh5 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Re2 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh2 loss in 2 half-moves