(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 | |
|---|---|---|---|
 | Cada oveja con su pareja by sujoyku (on 3. July 2024, 19:46) | 31 |  95 % |
| Blue, white and black 2.0 by Visumation (on 18. October 2024, 11:52) | 34 | 94 % |
| Equal Split Lines Hexuro by Nell Gwyn (on 29. March 2025, 07:19) | 13 | 93 % |
| Parity Principle by Andrewsarchus (on 19. April 2025, 08:28) | 33 | 92 % |
| Between Two Ferns by Fenners (on 24. February 2026, 02:21) | 57 | 97 % |
| Broken Cello by Tyrgannus (on 9. October 2021, 21:02) | 89 | 91 % |
| Wichtelkalender 2013 - August by SilBer (on 1. August 2013, 00:00) | 54 | 99 % |
| Two Sides of a Domino by TotallyNormalCat (on 30. June 2021, 20:30) | 55 | 91 % |
| Lost by Joseph nehme (on 24. June 2022, 19:30) | 59 | 96 % |
| 10-in-9 killer sudoku #2 by Nylimb (on 30. January 2020, 12:36) | 42 | 96 % |
| Roller Coaster mit Extras 20 by Uhu (on 13. April 2021, 09:31) | 39 | 99 % |
| Battle With The Archers 12: Silent Threat by Playmaker6174 (on 21. August 2021, 17:17) | 44 | 95 % |
| Battle With The Archers 21: The Order of Three Worlds by Playmaker6174 (on 19. November 2021, 16:56) | 46 | 98 % |
| Battle With The Archers 35: The Conflict of Three Worlds by Playmaker6174 (on 8. September 2022, 03:57) | 48 | 96 % |
| Eureka! by juggler (on 3. October 2024, 15:39) | 95 | 97 % |
| Arrow Knight by ademjaz (on 31. December 2022, 11:54) | 79 | 96 % |
| Kropki Nurimisaki by tallcat (on 1. February 2023, 08:00) | 75 | 94 % |
| Quagmire by jwsinclair (on 7. February 2023, 20:48) | 78 | 96 % |
| Middle of the Road (Killer) by tallcat (on 13. February 2023, 08:00) | 84 | 97 % |
| Habitat 67 by sfushidahardy (on 15. October 2024, 18:35) | 73 | 97 % |
