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EGTB: win in 2 half-moves

# move score
1 Rc8 win in 1 half-moves
2 Kg7 draw
3 Kh7 draw
4 Rg7 draw
5 Rg1 loss in 4 half-moves
6 Rg6 loss in 4 half-moves
7 Ra8 loss in 2 half-moves
8 Rb8 loss in 2 half-moves
9 Rd8 loss in 2 half-moves
10 Re8 loss in 2 half-moves
11 Rf8 loss in 2 half-moves
12 Rg2 loss in 2 half-moves
13 Rg3 loss in 2 half-moves
14 Rg4 loss in 2 half-moves
15 Rg5 loss in 2 half-moves