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EGTB: win in 4 half-moves

# move score
1 Rf2 win in 3 half-moves
2 Kg1 draw
3 Kh1 draw
4 Rb7 draw
5 Rc7 draw
6 Rd7 draw
7 Re7 draw
8 Rf1 draw
9 Rf3 draw
10 Rf4 draw
11 Rf5 draw
12 Rf6 draw
13 Kc3 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kc5 loss in 2 half-moves
16 Kd3 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Ke3 loss in 2 half-moves
19 Ke4 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Kg2 loss in 2 half-moves
22 Kg3 loss in 2 half-moves
23 Kh3 loss in 2 half-moves
24 Ra7 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves