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Many people incorrectly spell Sudoku as "Suduko" or "Sudoko". The correct English spelling is Sudoku - which means "single number" in Japanese
 
 
     
Suduko Review   >   Playing Sudoku   >   Variants   >   1  2  3  4  5  6  7
Related Pages:
1: Sudoku Variants

2: Different Symbols

3: Different Grid Sizes/Shapes

4: Sudoku X

5: Samurai Sudoku

6: Killer Sudoku

7: Multiplayer Sudoku

Killer Sudoku (also known as Samunamupure) is based on normal 9 X 9 Sudokus with the usual rules. However, there is one additional rule - there are dotted regions (sometimes called "cages") superimposed on the Sudoku grid, and the numbers in each region must add up to the total to the smaller number marked in the top left of the region.

For example - if there is a dotted region that is two cells across and one down and marked with a 6, you can deduce the cells must either contain a 5 and 1 (or vice-versa), or a 4 and 2 (or vice-versa) - they cells can not contain a 3 and 3 because of the Sudoku rule that you can't have the same number twice in the same row.

Killer Sudokus can be very tough to solve - and are an excellent new challenge if you're board with solving classic Sudoku.

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Killer Sudoku 1: The Deadly New Dimension

By Collins UK Staff

William Morrow Paperbacks
Released: 2006-01-24
Paperback (208 pages)

Killer Sudoku 1: The Deadly New Dimension
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Just when you thought it was safe to pick up a pencil

Killer Su Doku is based on the original Su Doku grid, with the same rules and numbers—1 to 9—but with an added deadly twist. This time there is an element of arithmetic involved and there are few, if any, clues. The aim is to not only complete every row, column, and cube so that it contains the digits 1 to 9, but to also fill in the outlined cubes so they add up to the same number.

Hints to solve the puzzle are hidden in the joined squares where only one combination of numbers applies. In the case of joined squares, if the printed number is 3, it should be 1 and 2 that go into the squares. Likewise, in the case of three joined squares, if the printed number is 6, the only combination possible is 1, 2, and 3.

To add one final fiendish level, each puzzle also has a time worked out by its Japanese creators so you can try to beat the clock.

The Times Killer Su Doku Book 11: 150 Lethal Su Doku Puzzles

By Times UK

imusti
Released: 2015-05-19
Paperback (256 pages)

The Times Killer Su Doku Book 11: 150 Lethal Su Doku Puzzles
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  • HarperCollins UK
Product Description:
The newest volume in the Killer Su Doku series, featuring the highest-quality puzzles with an extra element of arithmetic

This 11th addition to the successful Times Killer Su Doku series will test puzzlers' 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 digits 1 thru 9, it is also necessary to ensure that the outlined cubes add up to the same number as well. With 150 new Moderate, Tough, and Deadly Killer Su Doku puzzles, there is no chance to ease in with Easy puzzles. For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for the Times' next, terribly tough installment.

200 Killer Sudoku 5

By Lea Rest

udv
Paperback (102 pages)

200 Killer Sudoku 5
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200 Killer Sudoku.

The Times Ultimate Killer Su Doku Book 9: 200 of the Deadliest Su Doku Puzzles

By Times UK

imusti
Paperback (288 pages)

The Times Ultimate Killer Su Doku Book 9: 200 of the Deadliest Su Doku Puzzles
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Product Description:
These diabolically difficult Ultimate Killer Su Doku puzzles will really put your brain power to the test as you "warm up" with the 150 Deadly Killer puzzles before steeling yourself to take on the 50 Extra Deadly Su Dokus. The puzzles use the same 9x9 grid as a regular Su Doku, but have an extra mathematical element. 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.

The Times Ultimate Killer Su Doku Book 3

By The Times Mind Games

Times Books
Released: 2011-09-29
Paperback (224 pages)

The Times Ultimate Killer Su Doku Book 3
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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.

Prepare yourself for the toughest Su Doku challenge there is. These diabolically difficult Ultimate Killer Su Dokus 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 20 Extra Deadly Su Dokus. Are you ready for the challenge?

The Times Ultimate Killer Su Doku 3 is not for the faint-hearted. The puzzles use the same 9x9 grid as a regular Su Doku, but have an extra mathematical element that makes them a real 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.

If you survived the first two collections of Ultimate Killer Su Doku, then you might be ready to take on the third.

Warning: Not suitable for amateur puzzlers.

The Times Killer Su Doku Book 10

By HarperCollins UK

imusti
Released: 2014-10-14
Paperback (128 pages)

The Times Killer Su Doku Book 10
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  • Collins Publishers
Product Description:

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

This tenth addition to the successful Times Killer Su Doku series 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 digits 1-9, it is also necessary to ensure that the outlined cubes add up to the same number as well.

With 150 new Moderate, Tough and Deadly Killer Su Doku puzzles, there is no chance to ease yourself in with Easy puzzles. For those who like to live dangerously and push
beyond their mental comfort zone, steel yourself for The Times' next, terribly tough instalment.

the Colossal Killer Sudoku Book (Volume 2)

By Patrick Min

CreateSpace Independent Publishing Platform
Paperback (288 pages)

the Colossal Killer Sudoku Book (Volume 2)
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The long-awaited sequel to the Huge Killer Sudoku book is finally here, with 50 "Medium" puzzles, 50 "Tricky" ones, 75 "Difficult", 15 "Very Difficult", and TEN 16x16 Killer Sudokus! All difficult puzzles are printed on their own page, leaving plenty of space for notes. The 16x16 puzzles are printed twice, once on a single page, and once enlarged 4 times on 4 separate pages. Solutions are included in the back of the book. Solve Killer Sudoku and Calcudoku puzzles online at www.calcudoku.org, and submit solutions to the difficult puzzles in this book for points.

The Times Ultimate Killer Su Doku Book 2

By The Times Mind Games

Times Books
Released: 2010-09-30
Paperback (224 pages)

The Times Ultimate Killer Su Doku Book 2
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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.

Prepare for the extreme mental challenge of 100 Deadly-level Killer puzzles, including, exclusive to The Times, 20 Extra Deadly, to really test your limits: this is the only series in which you'll find such a torturous collection.

The Times Ultimate Killer Su Doku 2 is not for the fainthearted. The puzzles use the same 9x9 grid as Su Doku, and have an added mathematical challenge. The aim is not only to complete every row, column and cube so that it contains the digits 1-9, it is also necessary to ensure that the outlined cubes add up to the same number as well.

If the first Ultimate Killer Su Doku didn't scare you off – see how you fare after tackling this one…

Pocket Posh Killer Sudoku 2: 100 Puzzles

By The Puzzle Society

Brand: Andrews McMeel Publishing
Released: 2013-05-28
Paperback (128 pages)

Pocket Posh Killer Sudoku 2: 100 Puzzles
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A brand-new collection of Killer Sudoku puzzles, the Sudoku variation that has sold over 45,000 copies in the Pocket Posh® series.

Our second collection of Pocket Posh Killer Sudoku presents 100 puzzles in four difficulty levels. In addition to the rules of traditional Sudoku, the sum of the digits in each inner cage must equal the number in the top left corner of the cage. This portable package is part of a best-selling series featuring highly stylized, embellished covers and boasting 5 million copies in print. A free trial subscription to The Puzzle Society™ adds extra value.

Killer Sudoku: 101 puzzles

By Djape

CreateSpace Independent Publishing Platform
Paperback (130 pages)

Killer Sudoku: 101 puzzles
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This is a special, 10th anniversary edition of the first book with Killer Sudoku puzzles by Djape.

Introduced by The Times, the British publisher who pioneered the sudoku craze, the “killer sudoku” poses a double challenge: the basic rules of sudoku still apply, but puzzles initially have no numbers showing. All that is known is the sum of the numbers inside irregular boxes, called cages, in which the classic 9 x 9 sudoku grid is subdivided. Killer Sudoku contains 101 of these brain-busters grouped into six levels of difficulty.

The introduction explains the basic techniques needed to solve these new versions of the world's most popular number puzzle.








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