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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Rc2 draw
3 Rc3 draw
4 Rc4 draw
5 Rc5 draw
6 Rd7 draw
7 Re7 draw
8 Rf7 draw
9 Rh7 draw
10 Ke3 loss in 2 half-moves
11 Ke4 loss in 2 half-moves
12 Ke5 loss in 2 half-moves
13 Kf3 loss in 2 half-moves
14 Kf5 loss in 2 half-moves
15 Kfg4 loss in 2 half-moves
16 Kfg5 loss in 2 half-moves
17 Kg3 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Kh4 loss in 2 half-moves
20 Kh6 loss in 2 half-moves
21 Khg4 loss in 2 half-moves
22 Khg5 loss in 2 half-moves
23 Ra7 loss in 2 half-moves
24 Rb7 loss in 2 half-moves
25 Rc1 loss in 2 half-moves
26 Rc6 loss in 2 half-moves
27 Rc8 loss in 2 half-moves