(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 | |
|---|---|---|---|
 | Quad Bike by starwarigami (on 21. August 2022, 01:48) | 11 |  93 % |
| Tree Of Dominos by Jobo (on 11. March 2023, 11:13) | 12 | 91 % |
| Dobbledoku by krtekcze (on 27. April 2023, 14:10) | 27 | 93 % |
| Wrinkled potato by Quiriqui (on 28. April 2023, 12:48) | 60 | 93 % |
| Jellyfish Jam [Anti-King Akari RGB] by wisty (on 26. October 2023, 02:46) | 13 | 100 % |
| Dazed & Bewildered by Sniglett (on 28. October 2023, 19:30) | 11 | 91 % |
| A Deal With the Devil by ViKingPrime (on 14. December 2023, 16:30) | 23 | 98 % |
| Fillominoku by jsmirob (on 15. December 2023, 02:40) | 16 | 93 % |
| Yin Yang Multi-thermos by yttrio (on 8. March 2024, 20:20) | 71 | 98 % |
| Zodiac (Cipher Japanese Sums Deconstruction) by tallcat (on 6. May 2024, 08:00) | 41 | 94 % |
| Parroty Lines by marty_sears (on 29. April 2024, 13:52) | 130 | 96 % |
| Individuality by arbitrary (on 3. May 2024, 20:58) | 38 | 95 % |
| Suguru Sandwiches by AnalyticalNinja (on 25. June 2024, 21:25) | 13 | 92 % |
| Februar Prim-Monat (3) - Prim Killer (B) by Richard (on 10. February 2012, 12:00) | 60 | 92 % |
| Project 37 by Blashyrkh (on 6. December 2023, 13:48) | 68 | 93 % |
| Buffet by zetamath (on 20. July 2023, 06:51) | 174 | 98 % |
| Neapolitan by pieguy (on 19. June 2023, 18:16) | 50 | 95 % |
| Long and Short Arrow Sudoku by clover (on 19. October 2020, 12:53) | 34 | 95 % |
| Pierced Cages by Mark Sweep (on 29. January 2021, 10:00) | 34 | 94 % |
| Hot or Pointy? by Niverio (on 12. September 2022, 17:31) | 65 | 99 % |
