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EGTB: win in 4 half-moves

# move score
1 Rf7 win in 3 half-moves
2 Kf5 draw
3 Kf7 draw
4 Kh3 draw
5 Kh5 draw
6 Khg5 draw
7 Rb8 draw
8 Rg8 draw
9 Rh8 draw
10 Ke5 loss in 2 half-moves
11 Ke6 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Kfg5 loss in 2 half-moves
14 Kg3 loss in 2 half-moves
15 Kg4 loss in 2 half-moves
16 Kg6 loss in 2 half-moves
17 Kg7 loss in 2 half-moves
18 Ra8 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves