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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Ra1 draw
3 Rd1 draw
4 Re1 draw
5 Rf1 draw
6 Rg5 draw
7 Rg6 draw
8 Rg8 draw
9 K5d5 loss in 2 half-moves
10 K5d6 loss in 2 half-moves
11 K5f5 loss in 2 half-moves
12 K5f6 loss in 2 half-moves
13 K6d5 loss in 2 half-moves
14 K6d6 loss in 2 half-moves
15 K6f5 loss in 2 half-moves
16 K6f6 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Kd7 loss in 2 half-moves
19 Ke4 loss in 2 half-moves
20 Ke7 loss in 2 half-moves
21 Kf4 loss in 2 half-moves
22 Kf7 loss in 2 half-moves
23 Rb1 loss in 2 half-moves
24 Rc1 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rg4 loss in 2 half-moves
28 Rh1 loss in 2 half-moves