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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Kd1 draw
3 Kd2 draw
4 Kd3 draw
5 Rb5 draw
6 Rb7 draw
7 Rb8 draw
8 Rc1 draw
9 Rd1 draw
10 Re1 draw
11 Rf1 draw
12 Rh1 draw
13 Ke1 loss in 2 half-moves
14 Ke3 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 Kf7 loss in 2 half-moves
19 Kf8 loss in 2 half-moves
20 Kg7 loss in 2 half-moves
21 Kh7 loss in 2 half-moves
22 Kh8 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rb3 loss in 2 half-moves
26 Rb4 loss in 2 half-moves
27 Rb6 loss in 2 half-moves