HINT: If there exists a solution to the puzzle (marked by 
in a table) it is hidden by default. You have a possibility to show it by clicking Show/hide solution.
in a table) it is hidden by default. You have a possibility to show it by clicking Show/hide solution.HINT: By default all puzzles are ordered by descending date (if you don't choose otherwise) according to when they were added to a database (i.e. topmost are newest puzzles). I'll be glad if you help me to expand this collection with new puzzles.
Name   | Difficulty  | |
| 1996 | 8.5 |
| Celulární automat | 8.3 |
| Faktoriál | 8.0 | |
| Kachna a kočka | 8.0 | |
| Kooperativní dáma | 8.0 | |
| Monotonní podposloupnost | 8.0 | |
| Odebírání sirek III | 8.0 | |
| Otáčení mincí I | 8.8 |
| Otrávené víno | 8.7 |
| Pořadí čísel | 8.2 |
| Průnik válců | 8.5 |
| Představování | 8.9 |
| Rub a líc | 8.3 |
| SuDoKu (very hard) | 8.0 |
| Trik s kartami II | 8.0 | |
| Univerzální stroj pravdy | 8.0 | |
| Výuka kombinatoriky | 8.9 |
| Zamčen v kostce | 8.0 | |
| Total: 18 | ||