(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 | |
|---|---|---|---|
 | In Chaos there is Order by Ali M (on 15. March 2024, 21:55) | 27 |  91 % |
| Chaos by Nahileon (on 26. February 2022, 19:06) | 20 | 97 % |
| Coordinated Killers by Samish (on 11. September 2022, 09:09) | 59 | 96 % |
| O'Position [Ciphered Position Sums Fillomino] by Christounet (on 30. April 2023, 22:51) | 21 | 99 % |
| Despair by XeonRisq (on 3. March 2024, 21:00) | 19 | 97 % |
| Fifteen by Die Hard (on 20. March 2024, 00:27) | 19 | 97 % |
| Push and Pull by arbitrary (on 29. August 2024, 00:54) | 39 | 98 % |
| Philadelphia by ICHTUES (on 28. November 2021, 06:00) | 40 | 95 % |
| Chaos Construction: Sightlines by KNT (on 3. June 2022, 07:40) | 125 | 99 % |
| Die Kryptos - S05E04: Zelte und Bäume by tuace (on 1. September 2022, 20:22) | 15 | 98 % |
| Japanese Cave by KNT (on 29. August 2022, 05:29) | 47 | 99 % |
| Anti-Arrow by Eclectic_Hoosier (on 12. October 2022, 06:28) | 15 | 98 % |
| Yin Yang Yung by Big Tiger (on 5. December 2022, 23:52) | 15 | 100 % |
| Symphony (Entropy Killer) by Mad-Tyas (on 6. February 2023, 08:28) | 35 | 97 % |
| Parity Party XXIX, "Psy Ops" by glum_hippo (on 3. April 2024, 00:38) | 15 | 95 % |
| Japanische Höhle mit Irrwisch von den Außerirdischen by ibag (on 27. March 2018, 00:00) | 42 | 99 % |
| Five Dominos by Mad-Tyas (on 4. October 2022, 04:00) | 50 | 91 % |
| Summation U-Bahn by Agent (on 19. September 2023, 09:00) | 43 | 99 % |
| Build-Your-Own Kropki Sudoku by The Book Wyrm (on 15. January 2024, 20:58) | 42 | 99 % |
| Rätselsuppe III by Luigi (on 30. June 2010, 08:04) | 76 | 96 % |
