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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kb7 draw
3 Kb8 draw
4 Kc6 draw
5 Kcc7 draw
6 Kcd7 draw
7 Kd8 draw
8 Kdc7 draw
9 Kdd7 draw
10 Ke6 draw
11 Ke7 draw
12 Ra1 draw
13 Rg6 draw
14 Rg8 draw
15 Rh1 draw
16 Kc5 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Rb1 loss in 2 half-moves
20 Rc1 loss in 2 half-moves
21 Rd1 loss in 2 half-moves
22 Re1 loss in 2 half-moves
23 Rf1 loss in 2 half-moves
24 Rg2 loss in 2 half-moves
25 Rg3 loss in 2 half-moves
26 Rg4 loss in 2 half-moves
27 Rg5 loss in 2 half-moves