(Very) Hard AND nice puzzles
The following list contains portal puzzles that have been rated as nice or very nice and that are difficult. These puzzles are recommended for experts - and allow some time to solve.
| Description | solved | Rating | |
|---|---|---|---|
 | Nikolaus Challenge by Luigi (on 6. December 2009, 06:12) | 15 |  92 % |
| Broken Mirrors (Anti-king, Little Killer) by emmettcito (on 13. April 2021, 20:56) | 15 | 94 % |
| 1347 by Sktx (on 1. February 2022, 23:43) | 19 | 98 % |
| 6 Puzzles, 6 Modifiers, 6 Digits by tesseralis (on 15. October 2022, 10:31) | 30 | 96 % |
| Nary A'Dot by mormagli (on 2. February 2023, 22:42) | 32 | 95 % |
| Sandwich gone BAD by PrimeWeasel (on 3. March 2023, 17:59) | 13 | 100 % |
| The False Tautology (Zippular Lines #5) by heliopolix (on 12. February 2024, 21:16) | 14 | 96 % |
| Cityscape (Gravity/Counting Snakes) collab with Chad by dumediat (on 26. October 2024, 14:17) | 14 | 90 % |
| Pandemonium (Chaos Construction) by Sotehr (on 20. September 2025, 06:00) | 31 | 95 % |
| Chaos Deconstruction: Double Snake by KNT (on 25. July 2022, 03:25) | 39 | 94 % |
| [Fog of War Series] 11.Misty Doublers by AstralSky (on 9. December 2022, 09:00) | 45 | 91 % |
| The Gap by ICHTUES (on 5. December 2021, 06:00) | 20 | 91 % |
| Quantum X by starwarigami (on 16. January 2022, 12:01) | 22 | 99 % |
| Primesssweeper: Epictia by Xenonetix (on 10. March 2022, 17:17) | 44 | 99 % |
| On Repeat by mathpesto (on 14. March 2022, 01:14) | 63 | 100 % |
| The Entropy Safe by Mad-Tyas (on 13. February 2023, 07:58) | 46 | 95 % |
| Confetti by Ennead (on 17. September 2023, 16:38) | 25 | 100 % |
| Verhexte Sudukte by Menxar (on 19. September 2017, 12:53) | 29 | 98 % |
| Dante's Chaotic Journey by SenatorGronk (on 7. July 2023, 04:16) | 29 | 100 % |
| Brambles by Qodec (on 20. December 2020, 16:02) | 67 | 96 % |
