(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 | |
|---|---|---|---|
 | Ambiguous Identical Little Killers by Jeet Sampat (on 13. October 2022, 21:32) | 22 |  96 % |
| Psycho Dominoes by Allagem (on 9. January 2023, 00:53) | 21 | 94 % |
| Campsite #3 by PrimeWeasel (on 24. January 2023, 20:40) | 18 | 97 % |
| The Magic Potion (Zippular Lines #2) by heliopolix (on 17. December 2023, 02:57) | 42 | 94 % |
| RV 315 by BaumJames (on 6. April 2024, 04:54) | 25 | 93 % |
| Renbanwiches by Ennead (on 26. June 2024, 13:56) | 22 | 94 % |
| Octavia by steelwool (on 20. October 2024, 20:43) | 20 | 91 % |
| Synergies by Playmaker6174 (on 1. December 2024, 04:00) | 68 | 95 % |
| TTOL by ICHTUES (on 27. December 2024, 10:00) | 45 | 93 % |
| Copycat Banner by Scojo (on 14. September 2025, 02:02) | 21 | 93 % |
| Self-Contained by Ennead (on 30. September 2025, 21:27) | 20 | 91 % |
| Constant Temperature by palpot (on 9. May 2026, 11:37) | 20 | 94 % |
| LITSomino by mathpesto (on 23. March 2024, 15:48) | 69 | 95 % |
| Kropki Pairs Fillomino by Mark Sweep (on 23. November 2022, 10:00) | 42 | 93 % |
| In the Proximity by Lizzy01 (on 12. May 2023, 21:35) | 43 | 95 % |
| Left Out by fritzdis (on 26. February 2021, 04:57) | 55 | 97 % |
| Anti-Chess by EricRathbun (on 1. March 2024, 18:15) | 69 | 93 % |
| What The Flecks?! by NicoD (on 31. August 2025, 05:30) | 66 | 93 % |
| Anti-knight × killer × arrow by psninn (on 7. November 2024, 14:13) | 84 | 93 % |
| Wichtel 2011 (10): Japanische Summen - knapp daneben by wichtel (on 7. March 2012, 10:00) | 82 | 97 % |
