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…
Category: General
Everything that is not categorized.
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 –…
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.…
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…
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…
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…
“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…
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…
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…
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…