Think Fast! Test your wits against the clock in a series of fun mental challenges

Winners can win one of the following fantastic prizes:

• iPad2 – wifi 32GB
• iPhone4S – 16GB (device only)
• £500 Amazon voucher
• £750 Charity donation

Play as many times as you like and register your score to be entered into the random prize draw at: credit-suisse.com/head2head

Open to current university students aged 18+, lawfully residing and studying in Great Britain. Closes 11:59 p.m. (GMT), 10 February 2012. Terms apply