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EGTB: win in 20 half-moves

# move score
1 Rg8 win in 19 half-moves
2 Kc6 draw
3 Kc7 draw
4 Ke6 draw
5 Ke7 draw
6 Ke8 draw
7 Rc1 draw
8 Rc2 draw
9 Rc3 draw
10 Rd8 draw
11 Re8 draw
12 Kd6 loss in 2 half-moves
13 Kd8 loss in 2 half-moves
14 Kf2 loss in 2 half-moves
15 Kf3 loss in 2 half-moves
16 Kf4 loss in 2 half-moves
17 Kg2 loss in 2 half-moves
18 Kg4 loss in 2 half-moves
19 Kh2 loss in 2 half-moves
20 Kh3 loss in 2 half-moves
21 Kh4 loss in 2 half-moves
22 Ra8 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rc4 loss in 2 half-moves
25 Rc5 loss in 2 half-moves
26 Rc6 loss in 2 half-moves
27 Rc7 loss in 2 half-moves
28 Rf8 loss in 2 half-moves
29 Rh8 loss in 2 half-moves