(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 | |
|---|---|---|---|
 | Squiggles (Grkles Collab) by Niverio (on 15. June 2022, 00:37) | 36 |  96 % |
| Colorguru Chaos Deconstruction: Renbans by crispy16 (on 23. June 2022, 05:33) | 23 | 99 % |
| Kropki-cycle by tesseralis (on 28. July 2022, 12:58) | 19 | 100 % |
| Speak Of The Devil... by Perladel (on 14. September 2022, 13:33) | 32 | 92 % |
| Wichtel 2021 (11): Eine neue Route durch das schöne Rätselhausen by wichtel (on 22. November 2022, 10:22) | 12 | 100 % |
| Assume the Position by jwsinclair (on 2. March 2023, 20:45) | 25 | 97 % |
| Cross-cutting by Jagga (on 28. March 2023, 20:11) | 22 | 93 % |
| A Very Full Quiver by Oddlyeven (on 14. April 2023, 22:39) | 29 | 94 % |
| [Fog of War Series] 3-2: Sequel to Portals by AstralSky (on 24. April 2023, 22:36) | 39 | 93 % |
| Bermuda Triangle by XeonRisq (on 3. May 2023, 04:00) | 22 | 90 % |
| Colorguru Chaos Deconstruction: Arrows Edition by crispy16 (on 26. July 2023, 20:50) | 13 | 98 % |
| Polymorphic Rooms (collab with yttrio) by Bellsita (on 6. August 2023, 02:40) | 111 | 99 % |
| Doubling Season by Syntheticc (on 10. February 2024, 07:06) | 49 | 94 % |
| Put a ring on it (if you like it) by Ali M (on 26. March 2024, 16:32) | 49 | 94 % |
| If At All Possible by Big Tiger (on 11. April 2024, 21:11) | 23 | 94 % |
| Elevator Action (First Hidden Skyscraper Sudoku) by glum_hippo (on 19. July 2024, 16:16) | 14 | 98 % |
| Yajilin Dutch Whispers by yttrio (on 7. September 2024, 01:37) | 54 | 98 % |
| Intersections by IcyFruit (on 8. February 2024, 14:27) | 113 | 98 % |
| 23 Renban by Florian Wortmann (on 8. February 2023, 19:32) | 100 | 97 % |
| Projectile Perturbation by DadJokes (on 24. August 2022, 19:34) | 86 | 96 % |
