101 Perfect Killer Book

It is my pleasure to announce that we have partnered with Via Optima publishing house from Portugal and that they will be printing a book with Perfect Killer Sudoku puzzles! The book should be available in bookstores around mid November.…

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Cool your brains!

According to the comments, a lot of people enjoyed the IQ Killer posted on Friday. It’s time to cool your brains off a little, with the today’s “COOL” puzzle. For those who haven’t had enough, I posted a really tough…

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IQ Friday

First of all, I think that the download issues have been rectified. People aren’t complaining about downloading puzzles anymore, so I reckon it’s working fine for all of you. Also, I posted two puzzles just now. The Killer is rated…

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A few words about “Perfection”

Ever since I started posting “Killer” Sudokus I was unhappy for one reason: the puzzles posted did not meet one criteria that I was hoping they would fulfill – they were not perfect. Yes, I admit that. You might wonder…

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Cindy’s puzzle

Cindy, one of our regular visitors kindly asked me to post a daily puzzle today and I couldn’t say no :). So, even that I usually don’t do it on Saturday’s – you can find a very nice Killer Sudoku…

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Non-symmetrical Killer Sudoku

Today’s Killer puzzle is not symmetrical as you would expect. So, if you find an innie in one spot, it doesn’t necessarily mean that there is another one in the opposite corner. It also has some really cool cage shapes.…

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4 wheel drive

I just posted two new puzzles and as always, there is something special about at least one of them :). The “classic” Sudoku puzzle is a 4×4, not 3×3. Use LETTERS A-P to solve it instead of digits! The good…

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Poll results

We’ve had more than 200 votes on the favorite Sudoku poll and I think it’s about time to close this poll, although it is likely that it will be reopened at some stage, just to re-check your opinion. Here are…

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Let’s solve this baby!

Ok, I’ve created a separate category for the Killer Sudoku puzzle posted on September 27. It’s caused a lot of controversy and discussion on other websites and it’s time to bring this baby home and solve it! I’m really swamped…

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Cage Splitting – Killer Sudoku

Ok, here is the explanation of the “Cage/fence splitting” solving technique for Killer Sudoku puzzles that I promised before. I will use the puzzle posted on Friday, October 7 and solve it step by step using this method. We extend…

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