(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 | |
|---|---|---|---|
 | Battleship Deconstruction by wisty (on 27. September 2022, 14:04) | 20 |  93 % |
| Binary Quantum Void by DadJokes (on 13. October 2022, 19:14) | 24 | 94 % |
| The Digits Are Paid Actors by Lizzy01 (on 5. November 2022, 21:40) | 21 | 99 % |
| Network by Niverio (on 15. February 2023, 16:20) | 65 | 97 % |
| Abstract Art (Equalines, Entropy) by Mad-Tyas (on 27. February 2023, 09:16) | 34 | 97 % |
| BYO Arrows by Celery (on 28. October 2023, 22:44) | 36 | 91 % |
| Pluto by lerroyy (on 3. December 2023, 00:24) | 24 | 96 % |
| Round totals reclining stucco deconstruction. (8, 7) by Oddlyeven (on 7. February 2024, 18:32) | 23 | 97 % |
| Cave / Directionless Yajilin Permaculture by Agent (on 21. August 2024, 09:00) | 23 | 100 % |
| Eddies by Qodec (on 12. January 2021, 22:41) | 68 | 99 % |
| Chaos Construction with Slitherlink clues #2 by Phistomefel (on 21. September 2020, 19:41) | 55 | 98 % |
| Parhelion by Shinya (on 2. September 2021, 00:09) | 64 | 99 % |
| Thermo Sudoku by trivial171 (on 6. September 2020, 19:48) | 49 | 97 % |
| Crypto Japanese Cave-Bahn by KNT (on 18. January 2023, 07:32) | 44 | 99 % |
| Eclipsed Whispers by Space_man (on 7. May 2024, 05:52) | 36 | 94 % |
| Spotlight (Anti-King Arrow Sudoku) by EliasKar (on 5. May 2021, 18:18) | 26 | 99 % |
| Chaotic Skyscraper Sums by Florian Wortmann (on 6. August 2022, 16:04) | 78 | 100 % |
| Syzygies of Susurrus by JayForty (on 3. March 2023, 21:55) | 24 | 90 % |
| Entropy Exhibition by Mad-Tyas (on 19. September 2023, 12:15) | 49 | 93 % |
| Extreme Lunchbox 2 by Undar_Beyond (on 21. October 2020, 15:56) | 42 | 97 % |
