1) Create a match position, put black
on roll, exit edit mode and press hint:
correctly you get the hint for the cube
decision.
2) Now re-enter edit mode and change
ONLY the match length, then exit
edit mode and press hint: you get a
hint for a chequer move. Somehow,
shanging the match length has altered
the fact that black was on roll
(but not yet rolled). Notice that this
does not happen if you change the
score instead of thematch length.