Every week a Guardian Money reader submits a question, and it's up to you to help him or her out – a selection of the best answers will appear in next Saturday's paper.
This week's question:
I was so intrigued by your recent story about how to beat the bookies that I tried it – and made a tidy profit. Now I'm wondering if there are other betting systems that work. What about doubling the stake on red or black until you succeed at roulette? Or will it all end in tears?
What are your thoughts