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EGTB: win in 4 half-moves

# move score
1 Rf7 win in 3 half-moves
2 Ka4 draw
3 Kb4 draw
4 Kf7 draw
5 Rg1 draw
6 Rg2 draw
7 Rg3 draw
8 Rg4 draw
9 Rg5 draw
10 Rh7 draw
11 Ka6 loss in 2 half-moves
12 Kb5 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Kd8 loss in 2 half-moves
17 Ke6 loss in 2 half-moves
18 Ke8 loss in 2 half-moves
19 Kf6 loss in 2 half-moves
20 Kf8 loss in 2 half-moves
21 Rg6 loss in 2 half-moves
22 Rg8 loss in 2 half-moves