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EGTB: win in 4 half-moves

# move score
1 Rf7 win in 3 half-moves
2 Kg8 draw
3 Rh8 draw
4 Rg8 loss in 6 half-moves
5 Kf6 loss in 4 half-moves
6 Kf7 loss in 4 half-moves
7 Kg6 loss in 4 half-moves
8 Kh6 loss in 4 half-moves
9 Kh7 loss in 4 half-moves
10 Kh8 loss in 4 half-moves
11 Rf3 loss in 4 half-moves
12 Ra8 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rf5 loss in 2 half-moves
21 Rf6 loss in 2 half-moves