Take a Break's Su-doku Killer is chock full with 100% killer su-doku sumdokus. These are just like standard su-dokus, but the grids also contain shapes marked by a dotted line. All the digits enclosed within a shape must add up to the total in its top left corner. With starting tips and handy hints in each issue, it doesn't matter if you're a novice or an old hand, there's nothing to stop you getting stuck in.
Price: £2.00
On sale: Monthly