Mensa Killer Sudoku - More than 200 of the most difficult number puzzles (Moore Dr Gareth)(Paperback / softback) - diskuze

Test your powers of deduction against more than 200 devilishly difficult Killer Sudoku puzzles. The revered intelligence organisation, Mensa, have worked with Gareth Moore to put together a supreme test of logic. These brand-new puzzles will provide hours of entertainment for anyone who enjoys a difficult mental challenge.
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