(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 | |
|---|---|---|---|
 | Bamboozled by NicoD (on 26. February 2025, 05:34) | 40 |  95 % |
| the compeationist by aqjhs (on 5. June 2025, 05:28) | 36 | 96 % |
| Balanced Ride (Roller Coaster/Cave) by Piatato (on 23. October 2023, 11:00) | 41 | 99 % |
| Shade Your Own Puzzle: Fillomino vs Cave ft. Parity #3 - N difference (13x13) by Playmaker6174 (on 4. January 2025, 03:30) | 46 | 99 % |
| Congruity by Andrewsarchus (on 14. December 2025, 03:06) | 48 | 97 % |
| Antiking Killer Sudoku by PotatoHead21 (on 1. February 2023, 13:00) | 15 | 90 % |
| Copycat Copycat by Scojo (on 24. June 2023, 04:05) | 23 | 100 % |
| Ancient Tablet by Kafkapharnaum (on 25. July 2023, 15:51) | 36 | 100 % |
| Checkered Slitherlink by KNT (on 18. June 2024, 03:12) | 39 | 97 % |
| Yajilominous by Nell Gwyn (on 16. March 2025, 18:25) | 36 | 98 % |
| Schrödinger Lines Pt.2 by Zanno (on 20. March 2025, 15:11) | 12 | 93 % |
| only love can save us by aqjhs (on 15. September 2025, 21:21) | 37 | 99 % |
| Chaotic Meidjuluk #2 by PrimeWeasel (on 5. January 2026, 20:31) | 23 | 100 % |
| Permutation City by juggler (on 20. January 2026, 09:47) | 47 | 98 % |
| Wheel of Fortune (Entropy) by Mad-Tyas (on 26. September 2023, 12:52) | 79 | 96 % |
| Vault Construction by the_cogito (on 12. July 2022, 16:43) | 58 | 98 % |
| Crypto Crypto Japanese Cave by KNT (on 29. December 2022, 18:27) | 40 | 98 % |
| Nagaraja [Japanese Sums Cipher Snake Deconstruction] by Christounet (on 12. April 2024, 21:38) | 40 | 98 % |
| Arrow Laboratory by PotatoHead21 (on 20. January 2023, 15:12) | 32 | 96 % |
| 2 Corinthians 4:18 (Aqre Anti-X-Sum Chaos Deconstruction) by MaizeGator (on 18. September 2024, 01:43) | 30 | 96 % |
