Essentially, you roll, in this case, 5 dice (5 die?). The score is either a 0 or an even number. All you, as a newbie, can be told is:
The name of the game is Petals Around the Rose
The name is significant
Every answer is zero or an even number
That's all the hints you get. When the dice are rolled, you can always be told the score, but not how it was calculated.
If you ever figured it out, you become part of the Potentate of the Rose and are pledged...
...to be a cruel and heartless wretch who will never divulge the secrets of membership even under threat of the Rack and has taken an oath to comfort the miserable, ill, unfortunate and anguished members of the STUPE CLUB. Impossible as it may seem, each member has vowed to convert all STUPES to the grand and glorious P.A.T.R.
Check it out here: Petals Around the Rose