Cover art for The Times Ultimate Killer Su Doku Book 15
Published
Collins, April 2023
ISBN
9780008535872
Format
Softcover, 288 pages
Dimensions
19.8cm × 12.9cm × 1.8cm

The Times Ultimate Killer Su Doku Book 15 200 of the deadliest Su Doku puzzles (The Times Su Doku) by

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Challenge your brain 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.

Prepare yourself for the toughest Su Doku challenge there is. These diabolically difficult Ultimate Killer Su Doku puzzles will really put your brainpower to the test as you 'warm up' with the 100 Deadly Killer puzzles before steeling yourself to take on the 100 Extra Deadly Su Dokus. Are you ready for the challenge?

Not for the faint-hearted. The puzzles use the same 9x9 grid as a regular Su Doku, but have an extra mathematical element that multiplies the challenge. The aim is not only to complete every row, column and cube so that it contains the digits 1 to 9, but also to make sure that the outlined sections, called cages, add up to the number given in each cage.

Warning: Not suitable for amateur puzzlers!

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