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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kc7 draw
3 Kd7 draw
4 Ke8 draw
5 Kf5 draw
6 Kg3 draw
7 Kg5 draw
8 Kh3 draw
9 Kh4 draw
10 Kh5 draw
11 Ra7 draw
12 Rb8 draw
13 Re7 draw
14 Kc8 loss in 2 half-moves
15 Kf3 loss in 2 half-moves
16 Kf4 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rb3 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rb6 loss in 2 half-moves
23 Rc7 loss in 2 half-moves
24 Rd7 loss in 2 half-moves
25 Rf7 loss in 2 half-moves
26 Rh7 loss in 2 half-moves
27 Ke7 loss in 1 half-moves