Einstein's Riddle

Einstein's Riddle by Kostas Giannakakis


(3 stars)


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100,000 - 500,000 downloads

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Einstein's riddle or "Zebra puzzle" is a well known riddle attributed to Albert Einstein. In a neighborhood of five houses one is given some clues regarding the habits of the house owners and is asked to identify the one that owns the fish (or zebra in some variations).

It is said that only 2% of the population is able of finding the solution. I am not sure however, if this percentage refers to the people that are able to solve the puzzle without using a pen and a paper (or a computer). This is indeed very difficult and requires a beyond the average ability to hold too many pieces of information in one's mind at the same time.

This application provides an easier way to solve the puzzle. It presents the rules and the board in the same screen and allows you to easily make selections. It highlights red or green a rule automatically, when it is violated or fulfilled. It also offers easier variations of the puzzles, with fewer houses and properties.

German: Anne Leist

The new permission is introduced in order to integrate Scoreloop

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Recently changed in this version

- New puzzles
- Google Play Games

- Bug fixes

- 20 new puzzles

- 30 new puzzles
- Solve 31 puzzles to disable ads

- 65 new puzzles

- Fixed bug with game count
- 20 new 4x4 puzzles, 10 new 6x6 puzzles

- Scoreloop integration (requires phone state permission)

- 4 new puzzles

- 8 new puzzles
- Option to show rules with images

- 7 new puzzles
- Option to keep screen always on

- 10 new 5x5 puzzles
- Bigger action buttons

Comments and ratings for Einstein's Riddle
  • (46 stars)

    by Larry Qin on 21/04/2014

    Interface could be friendlier

  • (46 stars)

    by G Ben on 18/04/2014


  • (46 stars)

    by flying2uranus on 09/04/2014

    fix bugs!!!

  • (46 stars)

    by Faezal Yunus on 19/03/2014

    My only wish is for items that can be dragged (as in Excel pivots) rather than selected. But the challenge is that it requires more real estate.

  • (46 stars)

    by Martin Robinson on 12/03/2014

    Brain training that is also relaxing

  • (46 stars)

    by BISHWANATH GHOSH on 04/03/2014

    Good one!

  • (46 stars)

    by Gururaaj Naikar on 02/03/2014

    Wonderful game

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