Mensa Killer Sudoku Spawn 1942: If you had asked

1942: If you had asked a British officer who Colonel Clarke was

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Mensa Killer Sudoku Spawn 1942: If you had askedTest 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.