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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Ka5 draw
3 Ka7 draw
4 Kc3 draw
5 Kc4 draw
6 Kd3 draw
7 Ke3 draw
8 Ke4 draw
9 Ra1 draw
10 Rb1 draw
11 Rd1 draw
12 Rf1 draw
13 Rg2 draw
14 Rg3 draw
15 Rh1 draw
16 Kb5 loss in 2 half-moves
17 Kb6 loss in 2 half-moves
18 Kb7 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Rc1 loss in 2 half-moves
23 Re1 loss in 2 half-moves
24 Rg5 loss in 2 half-moves
25 Rg6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rg8 loss in 2 half-moves