(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 | |
|---|---|---|---|
 | Crypto Japanese Twilight Cave by KNT (on 23. October 2022, 06:02) | 49 |  99 % |
| Roller Coaster mit Extras 14 by Uhu (on 28. May 2019, 23:14) | 41 | 98 % |
| Shockwaves by Jay Dyer (on 12. November 2022, 20:32) | 74 | 95 % |
| Fillomino Chaos Construction by dennischen (on 23. May 2023, 08:46) | 67 | 100 % |
| Wildflowers by mathpesto (on 28. May 2023, 18:09) | 75 | 96 % |
| Ausgrabungen in Limcastregos by Luigi (on 25. August 2017, 11:43) | 26 | 92 % |
| The Song of the Serpent and the Wanderer - A tribute to Nordy by damasosos92 (on 17. July 2023, 03:40) | 64 | 94 % |
| Rollercoaster Deconstruction by tallcat (on 3. April 2023, 20:36) | 66 | 97 % |
| Verzwicktes ABCtje by ibag (on 23. October 2011, 09:42) | 21 | 93 % |
| Wichtel 2021 (6): Flucht durch die Unterwelt by wichtel (on 24. September 2022, 02:21) | 18 | 99 % |
| nopil nahual by aqjhs (on 30. May 2025, 00:00) | 21 | 99 % |
| Crypto Japanese Cave with Three Extraterrestrials by KNT (on 21. February 2023, 04:18) | 33 | 100 % |
| Deconstructing Mysterious Little Killers by Jeet Sampat (on 26. February 2024, 16:07) | 33 | 96 % |
| Zum Geburtstag by Uhu (on 5. March 2017, 10:24) | 41 | 99 % |
| Roller Coaster Nurikabe by the_cogito (on 24. February 2023, 19:32) | 92 | 98 % |
| Crypto Japanese Cave with Indexers by KNT (on 20. October 2022, 06:39) | 57 | 100 % |
| Couples by kolot (on 28. July 2021, 14:07) | 30 | 94 % |
| Chaos Construction: Border Sums by kolot (on 1. February 2022, 17:06) | 74 | 99 % |
| Spaceships by antiknight (on 20. June 2022, 16:39) | 15 | 95 % |
| Chaotic Serpents by jsmirob (on 20. June 2022, 19:26) | 15 | 95 % |
