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By WhiteNile Systems

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KillerSudoku for the iPhone allows you to play both Classic Sudoku and the increasingly popular (and harder) variation known as Killer. Killer Sudoku is already appearing daily in The Times and other newspapers.

If you like Sudoku, then Killer Sudoku is the next level up. It's tough, it's hard, it's... well, Killer!

- Killer Sudoku puzzle generator
- 15,000 puzzles for Classic Sudoku
- Easy, Medium, and Hard difficulty levels
- Easily enter online or newspaper puzzles
- Pencilling/Annotations (manual or live)
- Error detection
- Save and Open puzzles
- Snapshots
- Lock a number to enter with one touch
- Coloured or outline backgrounds for Killer Sudoku
- Clean uncluttered interface and keyboard

Updates are free.

What's New in Version 1.2

New Features:
- Pencilling/Annotations (manual or live)
- Beginner level on Killer puzzles
- Easier to touch buttons
- French language support

- Killer Engine improved so less duplicate solutions
- Easier to read numbers

Bug Fixes:
- Saving and Opening of games

iPhone Screenshot

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Customer Reviews

Very disappointing

I was disappointed that this app has so many bugs. I bought this for its Killer Sudoku option because 'Cool Sudoku' has some difficulty retaining pencil marks. Well, this app does not retain filled in boxes. Complete the game before you close it or your efforts will be gone when you reopen. I tried everything -- saving the game, saving under different names, closing quickly, backing out, taking a 'snapshot' (which only made the filled in boxes erase immediately). Huge drawback. In addition as mentioned above, the so-called snapshot feature which should help you return to a previous version, simply erases your filled-in numbers while keeping your pencil marks. Finally, the option to use colored backgrounds instead of dotted lines to differentiate the sections fails because they often put two boxes of the same color adjacent so you can't tell where one ends and the other begins. Giving the developer the benefit of the doubt, there must be something extra hard about writing apps for Killer Sudoku since the other app has similar problems while there are a dozen excellent apps for regular Sudoku. But this app currently has too many problems to use, perhaps they can be fixed in an update.

I really wish there were a better Killer Sudoku app out there...

I've had this app for some time now -- probably 3 years -- and I use it a lot. It does generate Killer Sudoku puzzles, and I haven't found a better iPhone app for that as yet. However, it almost always generates Killer Sudoku puzzles with multiple solutions, which is very frustrating to someone trying to treat it as a logic puzzle rather than a guessing game. Also, the controls are awkward; it would be a lot easier to have two rows of numbers, one for pencil-marks and the other for actual answers, instead of having to constantly toggle back and forth between actual and pencil input mode.
That said, I have not had the problems others have reported. I frequently take a phone call while solving a puzzle, and never lose any of my partially-completed solution. I've not had it generate a puzzle with no answer.
Finally, I use it so much because I love working Killer Sudoku puzzles, and haven't found anything better for the iPhone as yet.

Mostly awesome

I agree with other reviewers that this app seems to have mostly unsolvable killer sudoku puzzles, but I'm still giving it four stars still because besides that, it's perfect, and I'm putting my faith in the developers to fix this problem since I've now given them $2.

What's awesome: the price is worth it just to play clasic sudoku with the drag feature. You can drag your finger over as many square as you like and place notes on all of them with one tap, this is so amazing. And also, the classic sudoku seems to be more challenging than even expert on other apps, which I like because I sometimes feel like I'm just going through the motions to solve some puzzles, but these seem to need more problem solving.

All in all, will be perfect when they fix the unsolvable puzzle issue, but you can still enter your own puzzle in the morning to have with you in a more convenient way throughout the day.

View In iTunes
  • $1.99
  • Category: Games
  • Updated:
  • Version: 1.2
  • Size: 1.9 MB
  • Languages: English, French
  • Seller:

Compatibility: Requires iOS 2.1 or later. Compatible with iPhone, iPad, and iPod touch.

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