Leonhard Euler's Magic Square
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README.md

README.md

Euler Square

Leonhard Euler's Magic Square

Keywords: Leonhard Euler, Euler Square, Euler'sches Quadrat, Magic Square, Graeco-Latin square, Griechisch-Lateinisches Quadrat, Javascript, Firefox OS, Geeksphone, Mobile device, Catherine the Great, Katharina die Große, 36 officers problem, thirty-six officers problem, Albrecht Dürer, Melencolia § I

It has successfully been tested to run and/or install using Javascript in

  • Firefox OS (B2G) Simulator,
  • mobile devices like Firefox OS Geeksphone Keon and Geeksphone Peak,
  • Android ICS and Jelly Bean on Fennec Firefox 20.0.1,
  • Desktop Firefox, Chrome, MS IE10 Win8

To get more detailed background information visit the info page while Euler Square puzzle is running.

| Application as installed in FirefoxOS (B2G), own work, Oliver Merkel, Creative Commons Attribution-Share Alike license | | --- | --- | | Application as installed in FirefoxOS (B2G), own work, Oliver Merkel,
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. |

Since devices handle Mouse Events and Touch Events differently I assume that you might experience issues on some of the other real world devices currently available. Following discussion of the community this is quite normal due to the active development and discussion on how to map Touch onto its own eventing and mapping it onto Mouse Events at the same time depending on specific device. Latest Firefox OS Emulator now simulates Touch Events. Earlier versions still use mapped Mouse Events only. Code has been adapted to run on both.

| Euler Square application showing gameplay in MS IE10 on Win8 desktop instead of smaller resolution device, own work, Oliver Merkel, Creative Commons License, This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. | | --- | --- | | Euler Square application showing gameplay in MS IE10 on Win8 desktop instead of smaller resolution device, own work, Oliver Merkel,
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. |

Beware: Spoiler

Do not look too closely onto the next screenshots if you still plan to solve the Euler Square puzzle on your own from scratch.

Screenshot of an initial version of Euler Square in Firefox OS Simulator. This 10x10 Graeco-Latin Square has a valid 3x3 Graeco-Latin Square included, own work, Oliver Merkel, Creative Commons Attribution-Share Alike license Euler Square of order seven on a Geeksphone Peak mobile device, own work, Oliver Merkel, Creative Commons Attribution-Share Alike license
Screenshot of an initial version of Euler Square in Firefox OS Simulator. This 10x10 Graeco-Latin Square has a valid 3x3 Graeco-Latin Square included, own work, Oliver Merkel,
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Euler Square of order seven on a Geeksphone Peak mobile device, own work, Oliver Merkel,
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

| Another 10x10 solution with tiles of same inner and outer color on long diagonal only, own work, Oliver Merkel, Creative Commons Attribution-Share Alike license | | --- | --- | | Another solution sized 10x10. This solution has tiles of same inner and outer color on long diagonal only, own work, Oliver Merkel,
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. |