(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 | |
|---|---|---|---|
 | Cityscape (Gravity/Counting Snakes) collab with Chad by dumediat (on 26. October 2024, 14:17) | 14 |  90 % |
| Hallig-Rundreise by tuace (on 13. April 2015, 00:47) | 49 | 98 % |
| 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 % |
| Primesssweeper: Epictia by Xenonetix (on 10. March 2022, 17:17) | 44 | 99 % |
| On Repeat by mathpesto (on 14. March 2022, 01:14) | 61 | 100 % |
| Confetti by Ennead (on 17. September 2023, 16:38) | 25 | 100 % |
| [TSL][S1T1] Prestige (full rank, modifiers) by The Book Wyrm (on 13. October 2024, 18:00) | 20 | 93 % |
| Verhexte Sudukte by Menxar (on 19. September 2017, 12:53) | 29 | 98 % |
| Fillomino: Cryptic Differences #2 by Niverio (on 1. October 2022, 17:49) | 44 | 100 % |
| Yin-Yang Compass Fillomino by MagnusJosefsson (on 13. October 2022, 14:59) | 42 | 100 % |
| The Entropy Safe by Mad-Tyas (on 13. February 2023, 07:58) | 46 | 95 % |
| Eye of the Storm by TotallyNormalCat (on 11. February 2022, 22:00) | 55 | 97 % |
| Country Road Fillomino #2 (12x14) by Jesper (on 25. October 2022, 08:02) | 49 | 100 % |
| Brambles by Qodec (on 20. December 2020, 16:02) | 66 | 96 % |
| Nikolaus Challenge by Luigi (on 6. December 2009, 06:12) | 14 | 94 % |
| Parity Party X - "Sir Launcelot" by glum_hippo (on 7. June 2020, 06:52) | 20 | 92 % |
| Wichtel 2019 (7): Die mutierte Sieben by wichtel (on 14. September 2020, 18:12) | 25 | 99 % |
| Just between the N of us by Sktx (on 4. June 2021, 12:38) | 12 | 98 % |
