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EGTB: loss in 13 half-moves

# move score
1 Rg7 loss in 12 half-moves
2 Kh7 loss in 10 half-moves
3 Kg7 loss in 6 half-moves
4 Rf8 loss in 4 half-moves
5 Rg6 loss in 4 half-moves
6 Ra8 loss in 2 half-moves
7 Rb8 loss in 2 half-moves
8 Rc8 loss in 2 half-moves
9 Rd8 loss in 2 half-moves
10 Re8 loss in 2 half-moves
11 Rg1 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