Category Archives: General

Everything that is not categorized.

Discounted puzzle books

Amazon often gives good discounts on selected popular products. Right now, on all my books are discounted by at least 10%. This discount remains throughout the year. However, it’s important to know that occasionally they provide deeper discounts on some books. At the moment, the following books are discounted by 15% or more! Tweet […]

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Frame Jigsaw Sudoku

Here is another Frame Sudoku Sums puzzle, this time in Jigsaw Sudoku format! So, two distinct sudoku variants merged into one puzzle. Hard to find anywhere else but here, folks! 🙂 Let’s quickly recap the rules: the numbers outside of the grid tell you the sum of the 3 numbers closest to it. In a […]

Also posted in Jigsaw Sudoku, Sudoku Variants | Tagged , | 2 Responses

Lateral Thinking

I just came across this brainy joke and thought why not share it with you. It’s a nice example of lateral thinking. 🙂 Three logicians walk into a bar. The bartender asks “Do all of you want a drink?” The first logician says “I don’t know.” The second logician says “I don’t know.” The third […]

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Random puzzles

Here are some randomly selected puzzles from all the puzzles I ever published here since 2005. You can also find them by browsing the Free Puzzles category. If you are on Facebook, please first click the “Like” button. You sharing my puzzles means a lot to me, because new visitors come and discover my puzzles. […]

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Where are the daily puzzles gone?

Dear all, First I must apologize for keeping you in the dark regarding what’s going on with the daily puzzles. The truth is that I’ve been working hard on my PhD thesis and just had no time to update the daily and weekly puzzles pages. Now… the daily Killer Sudoku, the daily Sudoku variants and […]

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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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Pirates’ Games

This is not a puzzle related post. 🙂 It’s a brain teaser (I used to post brain teasers years ago). I’ve been studying game theory lately and wanted to share one “classic” problem of this discipline with you. See if you can solve it by yourself. Post your solution as comments below this post. So… […]

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