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.

From krazydad, constructor of the wildly popular and addictive puzzles published in The New York Times as Two Not Touch, here are 360 of your favorite Star Battle puzzles. These puzzles will provide a healthy diversion for you in these challenging times, and help you make it to the other side with your sanity intact! Includes an instructive and pithy tutorial.

Perfect for coffee breaks, commutes or relaxing at home, this bumper collection of 300 brand new ultimate killer sudoku puzzles is guaranteed to provide you with hours of entertainment. Each puzzle is presented in a 9 x 9 grid on its own page. Printed in a portable paperback format meaning it can be taken with you on your travels or sit neatly on your bedside table.

Killer Sudoku Puzzle Volume 1 EBook contains total of 228 puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction to play both in English and Spanish. Each individual puzzle has a single unique solution based on logical strategies and no "guessing" or "Trial & Error" are required. Please note that this is a DRM FREE EPUB format EBook and you should be able to print your puzzles or solve them on any device that allows drawing or typing text over an image (EXAMPLE: Paint Application with the *.JPEG, *.GIF, *.PNG image) and it is not an interactive game.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Killer Sudoku 9x9. After solving all the puzzles in this book, you will be a Killer Sudoku Pro. You start with easy Killer Sudoku puzzles and you gradually build your way up to extremely hard Killer Sudoku puzzles. Killer Sudoku 9x9 - Easy to Hard is a collection of 270 puzzles: 72 easy Killer Sudoku 9x9 puzzles 72 medium Killer Sudoku 9x9 puzzles 72 hard Killer Sudoku 9x9 puzzles 54 extra logic puzzles I guarantee that every logic puzzle in this Killer Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Killer Sudoku is also known as Sums Sudoku, Sumdoku, Sum Doku, Addoku, Killer Su Doku, Samunamupure, Kikagaku Nampure, Samu Nanpure, Sums Number Place.

200 Large Print Killer Sudoku Puzzles: Medium Difficulty Level (Volume 1) | Hobbies & Games | Activities, Crafts & Games Killer Sudoku is an exciting and fiendlishly challenging variant of traditional Sudoku! In normal Sudoku, the grid comes with a few cells already filled in; the more spaces filled in, the easier the game. However, in Killer Sudoku, no numbers are filled in at the start. In addition to the rows, columns and 3x3 regions, every cell is also a part of a cage, indicated by dotted lines. Each of these cages has a sum, and you must work out what numbers to put in each cell based on the sum of the cage. Each cell in a cage is added up and must match the sum of that cage. This Killer Sudoku Puzzle Book is designed for more experienced players who are looking for a brain challenge, featuring medium difficulty 9x9 Killer Sudoku puzzles. The book contains two hundred puzzles, with four puzzles per page. The solution to each Sudoku puzzle is conveniently provided on the reverse side of the page. Playing Sudoku is well-known to stimulate the brain, and creates a great sense of achievement when the puzzle is solved. Book Description 200 Killer Sudoku puzzles (200 medium difficulty). 4 puzzles per page. Total 102 pages. 8 x 10 inches (20.32 cm x 25.4 cm). Softback glossy cover. Quality white paper, easy to read. Hours of fun and makes a great gift for your friends, family or loved ones!

200 Large Print Killer Sudoku Puzzles: Beginner Level (Volume 1) | Hobbies & Games | Activities, Crafts & Games Killer Sudoku is an exciting and fiendlishly challenging variant of traditional Sudoku! In normal Sudoku, the grid comes with a few cells already filled in; the more spaces filled in, the easier the game. However, in Killer Sudoku, no numbers are filled in at the start. In addition to the rows, columns and 3x3 regions, every cell is also a part of a cage, indicated by dotted lines. Each of these cages has a sum, and you must work out what numbers to put in each cell based on the sum of the cage. Each cell in a cage is added up and must match the sum of that cage. This Killer Sudoku Puzzle Book is designed for beginner players who are looking for a brain challenge, featuring entry-level 9x9 Killer Sudoku puzzles. The book contains two hundred puzzles, with four puzzles per page. The solution to each Sudoku puzzle is conveniently provided on the reverse side of the page. Playing Sudoku is well-known to stimulate the brain, and creates a great sense of achievement when the puzzle is solved. Book Description 200 Killer Sudoku puzzles (200 Entry level). 4 puzzles per page. Total 102 pages. 8 x 10 inches (20.32 cm x 25.4 cm). Softback glossy cover. Quality white paper, easy to read. Hours of fun and makes a great gift for your friends, family or loved ones!