(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 | |
|---|---|---|---|
 | [TSL][S1T1] Prestige (full rank, modifiers) by The Book Wyrm (on 13. October 2024, 18:00) | 21 |  94 % |
| Chaos is a Club Sandwich (9X9) by SenatorGronk (on 19. February 2022, 23:49) | 38 | 95 % |
| Chaos Deconstruction: Double Snake by KNT (on 25. July 2022, 03:25) | 42 | 94 % |
| Liar U-Bahn by Myxo (on 8. June 2023, 12:47) | 39 | 99 % |
| Hallig-Rundreise by tuace (on 13. April 2015, 00:47) | 50 | 98 % |
| Nikolaus Challenge by Luigi (on 6. December 2009, 06:12) | 15 | 92 % |
| Wichtel 2019 (7): Die mutierte Sieben by wichtel (on 14. September 2020, 18:12) | 27 | 99 % |
| Broken Mirrors (Anti-king, Little Killer) by emmettcito (on 13. April 2021, 20:56) | 16 | 94 % |
| 1347 by Sktx (on 1. February 2022, 23:43) | 20 | 98 % |
| Primesssweeper: Epictia by Xenonetix (on 10. March 2022, 17:17) | 46 | 99 % |
| 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 % |
| The Entropy Safe by Mad-Tyas (on 13. February 2023, 07:58) | 48 | 96 % |
| Rock and a Hard Place (Chaos Construction) by tallcat (on 15. March 2023, 09:00) | 87 | 95 % |
| Entropy Equilibrium by Mad-Tyas (on 14. November 2023, 09:51) | 17 | 92 % |
| The False Tautology (Zippular Lines #5) by heliopolix (on 12. February 2024, 21:16) | 15 | 96 % |
| Clockwork Yajilin: Blackout Cipher by wisty (on 19. March 2024, 22:26) | 15 | 96 % |
| Steel Vengeance (Rollercoaster Chaos Deconstruction) by tallcat (on 2. September 2024, 08:00) | 62 | 98 % |
| Cityscape (Gravity/Counting Snakes) collab with Chad by dumediat (on 26. October 2024, 14:17) | 14 | 90 % |
| 4321-Bahn (ft. Christounet) by cyddrdrd (on 14. March 2026, 00:00) | 14 | 98 % |
