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EGTB: win in 4 half-moves

# move score
1 Rf7 win in 3 half-moves
2 Kg5 draw
3 Kg6 draw
4 Kg7 draw
5 Rc4 draw
6 Rg7 draw
7 Kd1 loss in 2 half-moves
8 Kd2 loss in 2 half-moves
9 Kd3 loss in 2 half-moves
10 Ke1 loss in 2 half-moves
11 Ke3 loss in 2 half-moves
12 Ke5 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ke7 loss in 2 half-moves
15 Kf1 loss in 2 half-moves
16 Kf2 loss in 2 half-moves
17 Kf3 loss in 2 half-moves
18 Kf5 loss in 2 half-moves
19 Kf7 loss in 2 half-moves
20 Ra7 loss in 2 half-moves
21 Rb7 loss in 2 half-moves
22 Rc1 loss in 2 half-moves
23 Rc2 loss in 2 half-moves
24 Rc3 loss in 2 half-moves
25 Rc5 loss in 2 half-moves
26 Rc6 loss in 2 half-moves
27 Rc8 loss in 2 half-moves
28 Rd7 loss in 2 half-moves
29 Re7 loss in 2 half-moves
30 Rh7 loss in 2 half-moves