Prof. Reinhard Meusinger invites you to participate in the Analytical Challenge, a series of puzzles to entertain and challenge our readers. We from the ValidNMR committee would like to support the “challenge idea” because we know how important practising is. In the university we have learnt how to work with NMR spectrometers and how to interpret NMR spectra, but now, we know how complex some samples are. So please, take your time and go through this special feature of “Analytical and Bioanalytical Chemistry” which has established itself as a truly unique quiz series, with a new scientific puzzle published every three months. Readers can access the complete collection of published problems with their solutions on the ABC homepage at http://www.springer.com/abc. Test your knowledge and tease your wits in diverse areas of analytical and bioanalytical chemistry by viewing this collection.

In the present challenge, palindromes are the topic. And please note that there is a prize to be won (a Springer book of your choice up to a value of €100). Please read on…