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EGTB: win in 12 half-moves

# move score
1 Kb6 win in 11 half-moves
2 Kb7 draw
3 Ra8 draw
4 Rb2 draw
5 Rb3 draw
6 Rb4 draw
7 Ka6 loss in 2 half-moves
8 Ka8 loss in 2 half-moves
9 Kc7 loss in 2 half-moves
10 Kc8 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Ke8 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rc8 loss in 2 half-moves