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EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Ra4 draw
3 Rb4 draw
4 Rc4 draw
5 Rd4 draw
6 Rg1 draw
7 Rg6 draw
8 Rg7 draw
9 Rg8 draw
10 K6d7 loss in 2 half-moves
11 K6e7 loss in 2 half-moves
12 K6f7 loss in 2 half-moves
13 K8d7 loss in 2 half-moves
14 K8e7 loss in 2 half-moves
15 K8f7 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Kd8 loss in 2 half-moves
19 Ke5 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Kf8 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh4 loss in 2 half-moves