(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 | |
|---|---|---|---|
 | Rounding Errors by Eclectic_Hoosier (on 12. May 2021, 16:52) | 18 |  96 % |
| Killers 123...go by abed hawila (on 21. May 2021, 09:02) | 60 | 95 % |
| Shuriken 手裏剣 by ___ (on 1. July 2021, 14:06) | 17 | 94 % |
| Connon by PrimeWeasel (on 4. July 2021, 11:06) | 28 | 93 % |
| 45+45=90 by the_cogito (on 18. October 2021, 15:23) | 12 | 98 % |
| A Horse with No Name (Broken 159) by purpl (on 2. January 2022, 18:01) | 45 | 97 % |
| Knuckle Sandwich by PrimeWeasel (on 31. January 2022, 10:07) | 13 | 92 % |
| Polynesia (Nurikabe Deconstruction) by Agent (on 27. September 2022, 09:00) | 110 | 99 % |
| Renbanage by Celery (on 14. November 2022, 00:58) | 31 | 94 % |
| Consistency (Equalines Sudoku) by Mad-Tyas (on 6. November 2023, 08:46) | 49 | 96 % |
| Kropki-Masyudoku by Lizzy01 (on 21. January 2024, 18:43) | 20 | 94 % |
| Wish You Were Here by Abdul the Killer (on 23. April 2024, 12:34) | 67 | 93 % |
| Scorching paperclips by NicoD (on 28. June 2025, 05:30) | 50 | 95 % |
| Four-Ring Circus by Nebuzaradan (on 19. September 2025, 18:36) | 14 | 96 % |
| Wichtels Rätselherbst 2025 (11): Adventskalender-Rekonstruktion by wichtel (on 30. November 2025, 20:25) | 15 | 96 % |
| Pull-ups by Morisenseiisgod (on 5. January 2026, 13:16) | 44 | 94 % |
| Extremities by Joseph nehme (on 10. July 2024, 08:06) | 104 | 95 % |
| Entropy Fish by Ridhwan (on 3. November 2023, 16:36) | 71 | 96 % |
| Eight Squares by jovi_al (on 26. September 2021, 23:34) | 118 | 97 % |
| Grid Your Lions by cristophermoore (on 16. September 2023, 23:53) | 59 | 92 % |
