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Category Archives: General
Changes in difficulty level
I must let you know that I’ve been working on improving the part of my software that determines the difficulty of a puzzle. Therefore, for the puzzle that I will post in a few moments, if you try to open it in “Perfect Sudoku” software, you will get a different rating from what’s indicated in […]
New poll
I’m closing the Mobile phone poll. I’ve been so busy with other things so I’m not sure when will I get my head around implementing Perfect Sudoku for mobiles. Here are the results: Anyhow, here is the new poll – choose your preferred level of difficulty for our Killer puzzles. It will affect which puzzles […]
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. At the moment, it will be published only in Portugal. We are looking for publishers […]
Also posted in Bookstores, Killer Sudoku, Puzzle books
Tagged BOOK, books, bookstore, FREE, killer, killer sudoku, Portugal
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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 Diagonal classic Sudoku. We’re doing quite well on the top 50 Sudoku sites list. A […]
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 “IQ”. It should be challenging but not terribly difficult. You should all solve it by […]
Problems downloading daily puzzles?
If you have a problem downloading daily puzzles, please try a couple of times (if the page reloads try again!) and if it still doesn’t work please send an e-mail to sudoku@djapedjape.com with a detailed description. In response, I will e-mail you today’s puzzle and also work on fixing the problem. It is unfortunate that […]
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“COOL” for Monday
I just posted today’s puzzle – rated “cool”. Remember, this is on “easy, cool, thinker, brain, iq, insane” scale. The difficulty is shown in the image along with the numeric indication of the difficulty. So this number can be used to compare two puzzles that have same difficulty levels. Thanx to R.Spurgeon who was quick […]
Puzzle difficulty rating
As promised, I’ve implemented a difficulty rating system in my Perfect Sudoku software and from now on I will be publishing the level for each puzzle. I’d like to get some response from you on this – how do you rate these puzzles that I’ve been posting? Here is what I came up with. These […]
1st month recap
This site was launched on September 14, so today is one month since the launch. I am happy to announce that yesterday we had 821 unique visitors to the site and more than 4000 page views. For just one month – I reckon that’s pretty good. Most of our visitors are not surprisingly from UK […]
September 27 solved!? Or…
I’ve received a possible solution for September 27 puzzle using only minor trial and error from udosuk. Here are his comments. You can also download the images that he sent: Firstly, the first pic (dk0927a.png) shows the steps I last posted which narrows R[1,2]C7 to {25} and then some more… From there I’ve worked out […]
