Have another look at the puzzle posted on 16th. These little rhymes might help you work it out. You could win a copy of my first novel, 'A Voice from the Past'. Give it to someone for Christmas if you already have it yourself.

Clue 1: They're sometimes used on watches and clocks - you have to think outside the box.

Clue 2: Since ROMAN times a logical mind is a sure-fire way an answer to find.

Clue 3: If indeed you're still confused, just ADD the NUMBERS that are used!

Got it? Sorry, I know it's obscure! Once a teacher, always a teacher, I suppose. I like to make people think!

Now here's an extra clue. The two main characters are Charlotte and Neal. Charlotte is worth 150 points and Neal 50.

Don't forget to email me your answer before next Saturday and please spread the word to all your friends so they can have a go too!