A guide to cryptic crosswords and how they can help increase brain power.

DA, whose crosswords appear with fiendish regularity in The Age and the Sydney Morning Herald, is the scourge of cryptic crossword aficionados across Australia and has built up a fanatical following over the years.

His latest book is for people curious about cryptic crosswords and will focus heavily on the brain-benefits of cryptic crosswords and how they can be a crucial aid in helping people help themselves.