(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 | |
|---|---|---|---|
 | [Fog of War Series] 11.Misty Doublers by AstralSky (on 9. December 2022, 09:00) | 47 |  91 % |
| Rock and a Hard Place (Chaos Construction) by tallcat (on 15. March 2023, 09:00) | 86 | 96 % |
| The Gap by ICHTUES (on 5. December 2021, 06:00) | 22 | 91 % |
| Quantum X by starwarigami (on 16. January 2022, 12:01) | 23 | 99 % |
| Primesssweeper: Epictia by Xenonetix (on 10. March 2022, 17:17) | 44 | 99 % |
| On Repeat by mathpesto (on 14. March 2022, 01:14) | 64 | 100 % |
| The Entropy Safe by Mad-Tyas (on 13. February 2023, 07:58) | 47 | 95 % |
| Confetti by Ennead (on 17. September 2023, 16:38) | 26 | 100 % |
| Entropic Detour by Myxo (on 12. January 2026, 21:09) | 46 | 97 % |
| Verhexte Sudukte by Menxar (on 19. September 2017, 12:53) | 29 | 98 % |
| Brambles by Qodec (on 20. December 2020, 16:02) | 68 | 96 % |
| Knapp daneben Twin Killer II by Richard (on 1. January 2010, 12:00) | 37 | 94 % |
| Yin-Yang Compass Fillomino by MagnusJosefsson (on 13. October 2022, 14:59) | 43 | 100 % |
| Decapitator by NicoD (on 25. May 2025, 05:30) | 50 | 97 % |
| Eye of the Storm by TotallyNormalCat (on 11. February 2022, 22:00) | 55 | 97 % |
| Country Road Fillomino #2 (12x14) by Jesper (on 25. October 2022, 08:02) | 49 | 100 % |
| Differenzen zwischen Summen III (kryptisch) by tuace (on 17. August 2018, 13:23) | 32 | 99 % |
| Wichtel 2019 (7): Die mutierte Sieben by wichtel (on 14. September 2020, 18:12) | 25 | 99 % |
| Just between the N of us by Sktx (on 4. June 2021, 12:38) | 12 | 98 % |
| Arrows and Digits by PotatoHead21 (on 11. September 2021, 18:33) | 22 | 90 % |
