Wil: It's against the rules and not being forced to move using both dice values is a known bug. Until implemented properly it's either a question for your own conscience and sportingmindedness (to play by the rule), or it's a decision that both players should agree to (to take advantage of the bug). both of those are fair ways to deal with it. I know it's a tourney loser but I'd make the correct move 24/20/15 (but then, I was on the wrong side of this same situation and wasn't pleased that the guy took the illegal route without hesitation. He's just been banned for cheating - multiple nicks and rate fixing - but that's a different story, lol).
You could put the question to Sharon - ask her is she's willing to take the gamble. Your chance of winning would be about 1/40. ;-)
If you want to see what thoughts there were last time, stick bug into the search box on this page. It's the same rule but in hypergammon.
(verstecken) Wenn du jemanden in seiner Landessprache grüssen willst versuche unser Spielerwörterbuch im Link: Mehr über Sprachen unter den Fahnen. (pauloaguia) (zeige alle Tips)