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EGTB: win in 20 half-moves

# move score
1 Ra7 win in 19 half-moves
2 Kc7 draw
3 Ke8 draw
4 Kg3 draw
5 Kg4 draw
6 Kg5 draw
7 Kh3 draw
8 Kh5 draw
9 Rb6 draw
10 Rb8 draw
11 Re7 draw
12 Rf7 draw
13 Rg7 draw
14 Rh7 draw
15 Kc8 loss in 2 half-moves
16 Kd7 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 Rc7 loss in 2 half-moves
23 Rd7 loss in 2 half-moves
24 Ke7 loss in 1 half-moves