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Challenge yourself at home with word and number puzzles For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for the second book in The Times' toughest Killer series yet.

Challenge yourself at home with word and number puzzles Specially compiled to provide the most devilishly difficult challenge, Ultimate killer Su Doku 3 is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

Challenge yourself at home with word and number puzzles Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

Challenge yourself at home with word and number puzzles Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

Challenge yourself at home with word and number puzzles For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for The Times' toughest Killer collection yet.

Challenge yourself at home with word and number puzzles Specially compiled to provide the most devilishly difficult challenge, Ultimate killer Su Doku 4 is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

Challenge yourself at home with word and number puzzles Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

Challenge yourself at home with word and number puzzles Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

The ideal gift for su doku enthusiasts this Christmas. Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.

Challenge your brain at home with these enjoyable puzzles. Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle.