(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 | |
|---|---|---|---|
 | Farfalle by cam (on 2. December 2022, 00:25) | 50 |  95 % |
| 3 Bags Full by panthchesh (on 30. January 2023, 02:17) | 27 | 94 % |
| Knights of the Round Table by BenTen (on 17. February 2023, 19:11) | 13 | 95 % |
| Vacaville by glum_hippo (on 16. October 2023, 21:10) | 38 | 90 % |
| Spot the Difference by marty_sears (on 13. December 2023, 03:29) | 136 | 98 % |
| Mod Pods (with gdc) by SamuPiano (on 26. September 2024, 15:44) | 38 | 98 % |
| In & out fillings (Flinty Collab) by palpot (on 14. January 2025, 15:00) | 23 | 94 % |
| Some Indexing by TVDK (on 24. February 2025, 02:00) | 42 | 98 % |
| U-Bahn Under Arrows by wooferzfg (on 7. April 2025, 05:57) | 24 | 98 % |
| Fist Full of Arrows by ChristianLynch (on 7. April 2025, 22:53) | 29 | 91 % |
| Octetraquadri by Nell Gwyn (on 8. April 2025, 04:03) | 13 | 90 % |
| it said dry clean only by aqjhs (on 25. April 2025, 02:09) | 25 | 91 % |
| Chaos Construction: Bread and Pie by Myxo (on 21. May 2025, 14:39) | 155 | 99 % |
| Skyscraper Sum Sandwiches by RockyRoer (on 10. August 2025, 14:32) | 22 | 90 % |
| Another killer: no more, no less by ZeroNickel (on 21. August 2025, 20:55) | 29 | 93 % |
| Bewildered by NicoD (on 30. August 2025, 05:30) | 57 | 94 % |
| Sum Some Yin Yang by sanabas (on 10. September 2025, 22:34) | 28 | 91 % |
| Lucerna (Large Myopia with Small Cave-Sudoku) by sfushidahardy (on 20. September 2025, 18:46) | 31 | 98 % |
| daft zebras jump quickly by aqjhs (on 28. November 2025, 01:23) | 29 | 93 % |
| Entropy miracle 8 by fractalminding (on 14. March 2026, 15:10) | 43 | 93 % |
