Rubik's Cube Demo application (version 1.00) was an entry in International Eiffel Programming Contest Eiffel Class Struggle 2003. Here are the final comments on it from judges (max score for each area is 10).
| Criteria | judge 4 | judge 6 |
| Installation documentation | 3 | 7 |
| Usage documentation | 3 | 7 |
| Construction documentation | 5 | 5 |
| Innovation and community value in Eiffel | 6 | 6 |
| Innovation and community value at all | 6 | 5 |
| Portability among Eiffel compilers | 4 | 4 |
| Portability among platforms | 2 | 2 |
| How easy is it to install? | 6 | 4 |
| How well is the entry constructed? | 7 | 5 |
| Source code readability + formatting | 5 + 2 | 4 + 2 |
| Use of the Principles of Design by Contract | 6 | 7 |
| How easy is it to use? | 7 | 6 |
| How much effort seems to have been put into it? | 7 | 7 |
| Total | 69 | 71 |
Overall comment by judge 6: "Cool idea of mixing a C library with an Eiffel application. Nice to see some Eiffel.NET stuff being used. This application could become a good demonstration of using Eiffel.NET capabilities."