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EGTB: win in 20 half-moves

# move score
1 Rg8 win in 19 half-moves
2 Kc6 draw
3 Kf5 draw
4 Kf6 draw
5 Kg4 draw
6 Kg6 draw
7 Kh4 draw
8 Kh5 draw
9 Kh6 draw
10 Ra8 draw
11 Kb6 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Kd8 loss in 2 half-moves
17 Kf4 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rd8 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves