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EGTB: win in 4 half-moves

# move score
1 Rf1 win in 3 half-moves
2 Kg1 draw
3 Kg2 draw
4 Kg3 draw
5 Ra4 draw
6 Ra5 draw
7 Ra6 draw
8 Rg1 draw
9 Kd5 loss in 2 half-moves
10 Kd6 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Ke1 loss in 2 half-moves
13 Ke2 loss in 2 half-moves
14 Ke3 loss in 2 half-moves
15 Ke5 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Kf1 loss in 2 half-moves
18 Kf3 loss in 2 half-moves
19 Kf5 loss in 2 half-moves
20 Kf6 loss in 2 half-moves
21 Kf7 loss in 2 half-moves
22 Ra2 loss in 2 half-moves
23 Ra3 loss in 2 half-moves
24 Ra7 loss in 2 half-moves
25 Ra8 loss in 2 half-moves
26 Rb1 loss in 2 half-moves
27 Rc1 loss in 2 half-moves
28 Rd1 loss in 2 half-moves
29 Re1 loss in 2 half-moves
30 Rh1 loss in 2 half-moves