Herbert.Willi :: Visited collections
| collection | solved levels | % |
| aenigma | 13 | 26 |
| Attrition | 17 | 9.5 |
| Cosmac | 81 | 14.3 |
| Microban | 88 | 56.8 |
| Microban II | 24 | 18.2 |
| Mini Cosmos | 16 | 40 |
| simple | 4 | 66.7 |
| total | 243 | |
| collection | solved levels | % |
| aenigma | 13 | 26 |
| Attrition | 17 | 9.5 |
| Cosmac | 81 | 14.3 |
| Microban | 88 | 56.8 |
| Microban II | 24 | 18.2 |
| Mini Cosmos | 16 | 40 |
| simple | 4 | 66.7 |
| total | 243 | |