(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 | |
|---|---|---|---|
 | Hopscotch by Ish_but_the_1st_time (on 28. February 2021, 20:36) | 13 |  90 % |
| Anti-Springer Killer, "Turfan Fragment" by glum_hippo (on 23. March 2021, 20:14) | 28 | 91 % |
| Battle With The Archers 4: Dual Crossbows by Playmaker6174 (on 23. June 2021, 07:57) | 51 | 95 % |
| 5-Stern-Star-Battle by CJK (on 2. July 2021, 10:17) | 40 | 94 % |
| Did someone say Mondrian? (Killer) by Chilly (on 2. August 2021, 23:27) | 14 | 90 % |
| Middle Ground by Qodec (on 10. August 2021, 15:53) | 40 | 90 % |
| Terminal Velocity by Tyrgannus (on 6. June 2022, 17:31) | 36 | 96 % |
| Zero Ate Five by XeonRisq (on 13. July 2022, 04:00) | 24 | 93 % |
| The Demon Watch by Perladel (on 26. August 2022, 14:28) | 24 | 96 % |
| Chaos in all Regions by Bother__ (on 4. December 2022, 21:29) | 28 | 92 % |
| Primordial Ooze by Kafkapharnaum (on 7. January 2023, 01:53) | 11 | 100 % |
| Knights of the Round Table by BenTen (on 17. February 2023, 19:11) | 12 | 95 % |
| Known Unknowns by Scruffamudda (on 6. June 2023, 10:29) | 15 | 93 % |
| Battle With The Archers 39: The Lifeline of Three Worlds by Playmaker6174 (on 19. June 2023, 10:11) | 35 | 98 % |
| The Electrified Trio by Playmaker6174 (on 26. August 2023, 09:15) | 26 | 99 % |
| Vacaville by glum_hippo (on 16. October 2023, 21:10) | 37 | 90 % |
| ⟊ Mid-Loop ⟊ by ElChiglia (on 24. February 2024, 07:15) | 27 | 91 % |
| Walkie Talkie (choco banana-ten lines sudoku) by Ambrose (on 26. January 2025, 00:00) | 10 | 90 % |
| Fillomino Romance (Chaos Construction) by Agent (on 13. December 2022, 09:00) | 61 | 99 % |
| Galactic Whispers by Knickolas (on 15. July 2023, 10:24) | 59 | 95 % |
