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EGTB: win in 6 half-moves

# move score
1 Rb7 win in 5 half-moves
2 K7b8 draw
3 Ka6 draw
4 Rf1 draw
5 Rf2 draw
6 Rf3 draw
7 Rf8 draw
8 Rg7 draw
9 Rh7 draw
10 K7b7 loss in 2 half-moves
11 K8b7 loss in 2 half-moves
12 K8b8 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Rd7 loss in 2 half-moves
16 Re7 loss in 2 half-moves
17 Rf4 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rf6 loss in 2 half-moves