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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kd6 draw
3 Kd7 draw
4 Kd8 draw
5 Rb1 draw
6 Rb2 draw
7 Rb4 draw
8 Rc8 draw
9 Rd8 draw
10 Re8 draw
11 Rf8 draw
12 Rh8 draw
13 Ke6 loss in 2 half-moves
14 Ke8 loss in 2 half-moves
15 Kf1 loss in 2 half-moves
16 Kf2 loss in 2 half-moves
17 Kf6 loss in 2 half-moves
18 Kf7 loss in 2 half-moves
19 Kf8 loss in 2 half-moves
20 Kg2 loss in 2 half-moves
21 Kh1 loss in 2 half-moves
22 Kh2 loss in 2 half-moves
23 Ra8 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rb5 loss in 2 half-moves
26 Rb6 loss in 2 half-moves
27 Rb7 loss in 2 half-moves