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EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Rb2 draw
3 Rc2 draw
4 Rd2 draw
5 Re2 draw
6 Rg3 draw
7 Rg4 draw
8 Rg6 draw
9 Rg7 draw
10 Rg8 draw
11 K6c7 loss in 2 half-moves
12 K6d7 loss in 2 half-moves
13 K6e7 loss in 2 half-moves
14 K8c7 loss in 2 half-moves
15 K8d7 loss in 2 half-moves
16 K8e7 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kc6 loss in 2 half-moves
19 Kc8 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Ke6 loss in 2 half-moves
23 Ke8 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Rf2 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh2 loss in 2 half-moves