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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Rb1 draw
3 Rb2 draw
4 Rb7 draw
5 Rd8 draw
6 Re8 draw
7 Rf8 draw
8 Rh8 draw
9 Kc1 loss in 2 half-moves
10 Kc2 loss in 2 half-moves
11 Kc3 loss in 2 half-moves
12 Kd1 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Ke1 loss in 2 half-moves
15 Ke2 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Kg3 loss in 2 half-moves
18 Kg4 loss in 2 half-moves
19 Kg5 loss in 2 half-moves
20 Kh3 loss in 2 half-moves
21 Kh5 loss in 2 half-moves
22 Ra8 loss in 2 half-moves
23 Rb3 loss in 2 half-moves
24 Rb4 loss in 2 half-moves
25 Rb5 loss in 2 half-moves
26 Rb6 loss in 2 half-moves
27 Rc8 loss in 2 half-moves