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EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Rh8 win in 3 half-moves
3 Rb3 draw
4 Rb4 draw
5 Rb5 draw
6 Rb7 draw
7 Rc8 draw
8 Rd8 draw
9 Re8 draw
10 Rf8 draw
11 Kf1 loss in 2 half-moves
12 Kf2 loss in 2 half-moves
13 Kf3 loss in 2 half-moves
14 Kg1 loss in 2 half-moves
15 Kg3 loss in 2 half-moves
16 Kg4 loss in 2 half-moves
17 Kg5 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Kh1 loss in 2 half-moves
20 Kh2 loss in 2 half-moves
21 Kh3 loss in 2 half-moves
22 Kh4 loss in 2 half-moves
23 Kh6 loss in 2 half-moves
24 Ra8 loss in 2 half-moves
25 Rb1 loss in 2 half-moves
26 Rb2 loss in 2 half-moves
27 Rb6 loss in 2 half-moves