(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 | |
|---|---|---|---|
 | a new way out by aqjhs (on 17. December 2025, 20:26) | 27 |  94 % |
| TRICKY - Buchstabenrätsel / Letter Puzzle by DocLogic (on 16. April 2024, 15:44) | 33 | 97 % |
| Whisper Whisper by Jay Dyer (on 20. August 2022, 13:08) | 47 | 97 % |
| Entropy Focus by Mad-Tyas (on 8. September 2022, 14:54) | 49 | 96 % |
| ⊕ Deconstructed-RSL-Loop ⊕ by ElChiglia (on 20. April 2024, 07:15) | 49 | 92 % |
| Glowworms by mathpesto (on 17. November 2023, 00:03) | 68 | 95 % |
| Killer Construction by ahaupt (on 12. June 2020, 21:33) | 67 | 99 % |
| Rundweg mit gespaltener Persönlichkeit by Calavera (on 1. July 2009, 16:23) | 89 | 98 % |
| Wichtel 2013 (10): Doppelschlangen-Höhle mit Doppellöwen by wichtel (on 30. May 2014, 10:32) | 28 | 99 % |
| Wichtel 2019 (11 und Schluss): Es soll nicht langweilig werden! by wichtel (on 6. November 2020, 20:01) | 18 | 100 % |
| In Between Disjoint Killings by tenaliraman (on 16. January 2021, 18:39) | 36 | 96 % |
| Kropkiominos by zetamath (on 30. May 2021, 00:17) | 40 | 97 % |
| Anti-King Killer by Jeet Sampat (on 18. November 2021, 05:00) | 19 | 93 % |
| Schrödinger's Cat's Revenge (killer, little killer) by Chilly (on 13. December 2021, 12:31) | 20 | 90 % |
| Long range archery by filuta (on 1. September 2022, 18:20) | 31 | 98 % |
| 30-1=29 by EricRathbun (on 15. January 2023, 01:58) | 26 | 96 % |
| Japanese Sums Cave Cipher: Nonogram Cave-ception by Xendari (on 8. January 2023, 13:59) | 30 | 99 % |
| Nemesis by igniteice (on 3. January 2024, 15:54) | 47 | 92 % |
| Mystery of Osaka by .proxz14 (on 13. March 2025, 11:45) | 29 | 98 % |
| Murder Holes (Chaos Construction) by kingoffries (on 1. July 2025, 23:03) | 27 | 100 % |
