(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 | |
|---|---|---|---|
 | Ones and Twos by FryTheGuy (on 9. November 2021, 02:27) | 29 |  96 % |
| Lügende Rundwege / Slitherlink Liars by Phistomefel (on 21. March 2022, 12:15) | 29 | 99 % |
| Party chaos by Lizzy01 (on 27. June 2024, 21:43) | 29 | 99 % |
| overflow underway by aqjhs (on 9. January 2025, 05:05) | 28 | 91 % |
| Roller Coaster mit Extras 26 by Uhu (on 10. January 2025, 07:56) | 28 | 100 % |
| Antimatter by zetamath (on 14. January 2022, 01:53) | 36 | 94 % |
| Chaos Loop by wooferzfg (on 1. December 2022, 05:49) | 35 | 98 % |
| Eclipsed Whispers by Space_man (on 7. May 2024, 05:52) | 38 | 95 % |
| Now the People Will Know We Were Here by ViKingPrime (on 17. April 2024, 16:15) | 47 | 97 % |
| Suguru Chaos Deconstruction: Solo Little Killers by crispy16 (on 10. April 2022, 21:17) | 69 | 100 % |
| Convergence by TotallyNormalCat (on 18. February 2021, 22:30) | 30 | 98 % |
| Sudokutown is That Way by Aaronomys (on 20. February 2022, 14:26) | 31 | 99 % |
| Wichtel 2021 (5): Fehlkommunikation by wichtel (on 12. August 2022, 20:21) | 22 | 99 % |
| A Game of Battleship! by Niverio (on 14. August 2022, 23:04) | 38 | 100 % |
| Time by lerroyy (on 13. January 2023, 19:26) | 19 | 91 % |
| Invisible Cages by Ennead (on 5. March 2023, 15:14) | 18 | 97 % |
| Tonfa by Blashyrkh (on 14. April 2023, 09:41) | 33 | 95 % |
| Unboxing by mathpesto (on 11. May 2023, 05:11) | 65 | 97 % |
| Poison Pill Killer by JeffWajes (on 4. September 2023, 20:30) | 43 | 96 % |
| Happy Birthday Bellsita: Supernatural Sums by wisty (on 26. September 2023, 10:13) | 15 | 96 % |
