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LCM Sudoku


LCM Sudoku is another Sudoku variant, and this one is based upon the arithmetic and number theory, the least common multiple (LCM).

Rules of LCM Sudoku are like the standard Sudoku, this Sudoku has three basic rules: 1. Each column, each row and each box (3×3 sub grid) must have the numbers 1 through 9. 2. No column, row or box can have two squares with the same number. 3. The puzzle can be solved by finding the values of the 9 given variables in the squares of the 9×9 grid.


Stars & Stripes Sudoku


Stars & Stripes Sudoku, is another Sudoku variant by USA Sudoku.

Each 12 x 12 grid has the familiar 1 – 9′s, but also has three stars in each row, box and column. Instead of using letters A, B,and C, the puzzle uses three stars in the form of an asterisk (*). The difference is the 3 stars (*) are the “same”. Each row, column, and 4×3 box will contain three stars in a finished puzzle.

The 100 puzzles in this book range from easy warm-ups to ruthlessly difficult challenges and are sure to [Read More...]


Christmas Tree Sudoku


The most popular Christmas tradition wears a new shape this year as Conceptis uncovers a 15-grid multi Christmas tree Sudoku puzzle (large version).

According to Frank Rietveld, Manager IPS & International operations of Tazuku at Keesing Group, 600,000 Christmas tree Sudoku posters (shown left) had been stitched to 30 latest issues of Keesing’s Tazuku magazine series including 9 magazines with Conceptis puzzles. “Our goal with the poster” says Rietveld, “is to offer Tazuku fans, including subscribers and random buyers, a nice free extra for the holiday season.”

GAMES Magazine has [Read More...]


Puzzles For Programmers and Pros – Puzzle Book


Puzzles for Programmers and Pros is for programmers who need to brush up on their puzzle–solving skills as they prepare for the programming job interview. It is also for anyone who love puzzles and challenges.

From the Back Cover: Solving puzzles demands a mindset that starts with a vulnerable openness followed by a rigorous drive to find a solution. Whether you’re preparing for a programming job interview or just like a challenge, this book takes you on a tour of problem–solving techniques so you can dramatically improve your skills. You?ll learn how to conquer [Read More...]


Quad Clue Sudoku


Quad Clue Sudoku is a brand new Sudoku variant by David Millar from The Griddle.

UPDATE : Quad Clue Sudoku is based upon the original Quadruple Clue Sudoku by Henry Kwok (sorry Henry but it was never the intention to not mention you as the inventor of Quadruple Clue Sudoku, if only we had known before).

The latest quad clue Sudoku sheet contains nine Sudoku puzzles to solve. Each Quad Clue Sudoku puzzle contains features a six by six Sudoku grid with four numbers at some of the grid intersection points. These four numbers correspond [Read More...]


36 Cube – Puzzle Game


36 Cube is a new puzzle game by world famous game maker Thinkfun. 36 Cube is the brainchild of Dr. Derrick Niederman, an MIT Ph.D. who develops puzzles for fun. He came up with the idea while writing a book on whole numbers, after unearthing a mathematical supposition from the 18th century.

36 Cube is an innocent-looking puzzle with a challenging solve-ability factor. Simply snap 36 boldly-colored plastic tower pieces, six each of six colors, into a square base with 36 welcoming receptacles. Make sure the finished puzzle forms a perfect cube, each color appearing only once in each row [Read More...]


Sudoku Watch


Sudoku is a popular numbers-based puzzle game for people with time to kill or a passion for puzzles. It’s gotten super-popular in the last few years, which has led to a number of gimmicky Sudoku-themed items come out, few as ludicrous as this Sudoku Watch.

Oris has launched the Leonard Euler limited edition watch to mark the 300th anniversary of the birth of the great Swiss mathematician. The mechanical watch has many different connections to the author of Mechanica, not least a Sudoku influenced dial and numerals. This exclusive edition is limited to 1707 watches, all individually numbered, [Read More...]

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