(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 | |
|---|---|---|---|
 | Yin-Yang Whisperominos by Die Hard (on 4. August 2024, 11:15) | 31 |  94 % |
| Activate Your Renbans! by RockyRoer (on 2. November 2024, 15:44) | 17 | 93 % |
| Slide & Seek #1: An X-wing on Diamonds by Pixel_StrengthReal (on 11. January 2025, 19:42) | 15 | 95 % |
| Japanische Summen auf Antimagneten(2) by r45 (on 9. July 2013, 09:07) | 63 | 99 % |
| Seventh Night by SSG (on 1. December 2021, 07:07) | 65 | 94 % |
| Cube by DVFrank (on 23. June 2021, 18:34) | 41 | 97 % |
| Myopia by wuzzle (on 1. January 2021, 00:00) | 35 | 93 % |
| Wichtel 2020 (8): Das exotische Spätabendland by wichtel (on 23. September 2021, 22:00) | 32 | 99 % |
| Fortress at Midnight by Playmaker6174 (on 10. November 2021, 23:35) | 35 | 93 % |
| King's Guard by Fafrd (on 6. June 2022, 03:49) | 37 | 95 % |
| Arrow or Centipede? by EricRathbun (on 11. September 2022, 18:08) | 42 | 99 % |
| Shuffled by jwsinclair (on 28. November 2023, 21:19) | 44 | 92 % |
| The Prophecy (Zippular Lines #1) by heliopolix (on 15. December 2023, 00:43) | 33 | 95 % |
| 2. Teil der Trilogie: Ein schwangeres Hitori by berni (on 29. September 2010, 01:23) | 59 | 97 % |
| 25 by ICHTUES (on 26. February 2021, 12:26) | 32 | 98 % |
| Wish You Were Here by Abdul the Killer (on 23. April 2024, 12:34) | 63 | 92 % |
| One Loop, Two Loop by Belamis (on 21. July 2024, 11:48) | 36 | 97 % |
| Thermometer Sandwich Sudoku by Jesper (on 31. May 2020, 19:31) | 97 | 91 % |
| Sandwich Counts by RockyRoer (on 4. April 2023, 22:21) | 47 | 96 % |
| Pseudoscience by marty_sears (on 7. February 2024, 19:54) | 181 | 96 % |
