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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Kg2 draw
3 Kh2 draw
4 Rc7 draw
5 Rd7 draw
6 Re7 draw
7 Rf7 draw
8 Rg1 draw
9 Rg2 draw
10 Rg3 draw
11 Rg5 draw
12 Rg6 draw
13 Kc3 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kc5 loss in 2 half-moves
16 Kd3 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Ke3 loss in 2 half-moves
19 Ke4 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Kg3 loss in 2 half-moves
22 Kg4 loss in 2 half-moves
23 Kh4 loss in 2 half-moves
24 Ra7 loss in 2 half-moves
25 Rb7 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh7 loss in 2 half-moves