Tag Archives: IQ

Hanjie book

I just remembered that I still haven’t announced my new Griddlers book! Well, here it is: Hanjie Griddlers Nonograms book, volume 3 Just as previous volumes, this one also contains 100 picross puzzles for you to solve and enjoy. Perhaps some of them are slightly more difficult than before. An advanced Griddlers solving technique is […]

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Binary Takuzu puzzle book

What did you think of the Takuzu puzzle I posted a couple of days ago? Takuzu? Yes! Or the Binary Puzzles… or “The New Sudoku”… or… well, the name doesn’t matter. If you like them, you will be glad that there is a book full of them, just published! Two hundred of these puzzles with […]

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Futoshiki

The rules of Futoshiki are very simple: 1. The grid is square and can be of any size. Use numbers 1 to the size of the grid to solve the puzzle. 2. Numbers cannot be repeated in a row or column. All numbers must appear in each row and in each column. 3. The “more […]

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Killer Sudoku 10×10

When was the last time I posted a Killer Sudoku variant puzzle for the first time? I can’t remember. Well, nearly 8 years (I’m a bit slow, you know) after publishing first Killer Sudoku, it occurred to me that there is no reason not to add the 0 into play. So… ladies and gentleman… a […]

Posted in Free sample puzzles, Killer Sudoku | Also tagged , , , , , | 14 Responses

Difficult Killer Sudoku book

Perhaps you’ve already noticed the cover of my new Killer Sudoku book. In case you haven’t, here is a proper presentation of this new and fiendish sudoku book. So… many of you have asked for a book with only the most difficult of my Killer Sudokus. In “Revenge of Killer Sudoku 6” I dropped the […]

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Easy Killer Sudoku book

I’ve published many Killer Sudoku books and I kinda have a reputation for creating only difficult killer sudokus. Well, I decided to change that and therefore I prepared and published a book with only really EASY Killer Sudoku puzzles. If you’ve been scared to try the Addoku or Sumdoku (as these puzzles are also known), […]

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Odd Even Sudoku

Merry Christmas to all who celebrate this day! 🙂 As a small gift for you, I’ve prepared an odd-even sudoku variation puzzle. It’s not the first odd even puzzle I ever posted, but it is the first plain odd even sudoku. And to spice things up a little bit, this is a very difficult odd/even […]

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Posted in Free sample puzzles, Sudoku Variants | Also tagged , , , , , , , , , , | 4 Responses
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