(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 | |
|---|---|---|---|
 | Oklahoma City by ICHTUES (on 27. November 2022, 06:00) | 68 |  96 % |
| The Turtle (Renban, Entropy) by Mad-Tyas (on 28. March 2023, 09:21) | 41 | 98 % |
| Japanese Sums Narrow Cave Cipher: Mirrors (11x11) by Jesper (on 2. June 2023, 16:04) | 36 | 100 % |
| Duplication by Xenonetix (on 28. July 2023, 00:00) | 38 | 98 % |
| Chaos Construction: Region Counting by KNT (on 28. April 2022, 17:59) | 60 | 94 % |
| Wanna Take This Outside? by ThePedallingPianist (on 21. December 2023, 01:09) | 89 | 98 % |
| Pitchfork Emporium by FryTheGuy (on 21. December 2021, 04:10) | 31 | 95 % |
| [N]ine [B]oxes by Gliperal (on 14. July 2022, 09:20) | 19 | 90 % |
| Lobster Bisque (Chaos Construction) by Tacosian (on 23. November 2023, 21:57) | 42 | 99 % |
| Foggy foggy x-sums by sanabas (on 26. July 2024, 07:36) | 49 | 94 % |
| Consechaos Bonsai by Xenonetix (on 12. May 2025, 19:19) | 37 | 97 % |
| a night in the city by aqjhs (on 27. October 2025, 00:49) | 32 | 94 % |
| Orbit by Qodec (on 16. September 2020, 21:38) | 72 | 99 % |
| Chaos Construction: Numbered Rooms / Skyscraper / Sandwich Length by KNT (on 4. May 2022, 07:54) | 56 | 97 % |
| Zag by grkles (on 18. March 2021, 11:46) | 47 | 98 % |
| Halligen Knapp Daneben by KNT (on 12. January 2023, 01:08) | 34 | 97 % |
| A Rose by PotatoHead21 (on 2. August 2023, 08:24) | 36 | 95 % |
| Send In The Clones by Jay Dyer (on 25. September 2024, 23:03) | 38 | 94 % |
| Roller Coaster mit Extras 25 by Uhu (on 5. March 2022, 08:36) | 24 | 99 % |
| Extreme Lunchbox 2 by Undar_Beyond (on 21. October 2020, 15:56) | 43 | 97 % |
