A famous mathematician died alone without family. In his mansion thousands of little boxes with exactly 16 knobs, key holes or switches were found. The local police is clueless about what those boxes contain and more important, how to open them.

Can you help them solve the mystery of the locks? Turn the knobs, switches or press the buttons until all are open. Beware, the locks are interconnected! For every lock you turn also all locks in the same row and column will turn...

What’s New

Version 2.1

Three new puzzles and minor fixes

Ratings and Reviews

2.3 out of 5
3 Ratings

3 Ratings

Bfuddled ,

I want my money back.

The app shows the title screen then crashes. Just look at how tiny the file is! This app has to be a scan. Don't waste your money!

Ditch5927 ,


All it ever does is show the splash screen and then close, save your dollar and buy 'Amazing Breaker' instead, you'll be glad you did!

App Privacy

The developer, rohoWare, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


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  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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