The latest volume in the hugely popular Killer Su Doku series from The Times, featuring the highest-quality puzzles with an extra element of arithmetic.

These puzzles will test your skills to the limit, adding the challenge of arithmetic and taking Su Doku to a new and even deadlier level of difficulty.

The puzzles use the same 9x9 grid as Su Doku but with an added mathematical challenge. The aim is not only to complete every row, column and cube so that it contains the numbers 1-9, it is also necessary to ensure that the outlined cubes add up to the same number as well.

With 200 new Moderate, Tricky, Tough and Deadly Killer Su Doku puzzles, there is no chance to ease yourself in with simple puzzles. For those who like to live dangerously and push
beyond their mental comfort zone, steel yourself for The Times' next, terribly tough instalment.

Times Mind Games brings together the very best puzzles from the pages of The Times: Cryptic and General Knowledge Crosswords, Jumbo Crosswords, Codewords, all levels of Su Doku and mixed number puzzles and word-based games and quizzes.