(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 | |
|---|---|---|---|
 | The Difference Between a Cage by Mr.Goodkitteh (on 28. April 2021, 15:47) | 20 |  98 % |
| Orderly Little Killer 3 by Strosahl (on 2. July 2021, 07:11) | 17 | 92 % |
| Black Jack by Andrewsarchus (on 5. December 2021, 07:02) | 17 | 98 % |
| Cursor by ICHTUES (on 26. December 2021, 06:00) | 16 | 95 % |
| Arrowings (version 2) by kolot (on 27. January 2022, 11:30) | 18 | 93 % |
| Fire Watchers by Angelo (on 15. March 2022, 23:09) | 18 | 97 % |
| Po-Boy by Sniglett (on 1. December 2023, 14:06) | 55 | 94 % |
| Renbanwiches by Ennead (on 26. June 2024, 13:56) | 19 | 93 % |
| Productivity by juggler (on 19. December 2024, 20:34) | 19 | 93 % |
| Decompression by ThePedallingPianist (on 25. January 2025, 15:40) | 17 | 95 % |
| Dyscalculia by Lorena (on 7. February 2025, 15:30) | 18 | 92 % |
| Centripetal Slingshot Sudoku by stephane.bura (on 30. July 2020, 20:00) | 52 | 99 % |
| Yspot (Anti-V Between; Collab w/ Zetamath) by tallcat (on 23. February 2023, 19:50) | 52 | 92 % |
| Table for Four - Easy as Pentomino by uvo (on 19. August 2014, 12:43) | 31 | 93 % |
| Für Luca zum Geburtstag: Krypto-Inselrundweg by CHalb (on 4. November 2019, 09:29) | 29 | 95 % |
| B-2 spirits by Joseph nehme (on 22. May 2021, 11:02) | 36 | 95 % |
| [Fog of War Series] 3-2: Sequel to Portals by AstralSky (on 24. April 2023, 22:36) | 41 | 91 % |
| Wrogn Quasd by Sumanta(ANU) (on 20. August 2023, 13:18) | 32 | 90 % |
| Slingshot Skirmish 4 - Mirror Match by Allagem (on 30. April 2024, 13:34) | 34 | 91 % |
| The Spectrum of Sunlight by egubachu (on 20. December 2024, 15:31) | 37 | 90 % |
