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EGTB: win in 12 half-moves

# move score
1 Rf1 win in 11 half-moves
2 Ra7 draw
3 Rb7 draw
4 Rf2 draw
5 Rf3 draw
6 Rf4 draw
7 Rf8 draw
8 Rh7 draw
9 K1b1 loss in 2 half-moves
10 K1b2 loss in 2 half-moves
11 K2b1 loss in 2 half-moves
12 K2b2 loss in 2 half-moves
13 Ka3 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Rc7 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rg7 loss in 2 half-moves