(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 | |
|---|---|---|---|
 | On Repeat by mathpesto (on 14. March 2022, 01:14) | 66 |  100 % |
| [Fog of War Series] 11.Misty Doublers by AstralSky (on 9. December 2022, 09:00) | 47 | 91 % |
| Thermodynamics (Thermo, Entropy) by Mad-Tyas (on 13. March 2023, 09:36) | 44 | 91 % |
| Brambles by Qodec (on 20. December 2020, 16:02) | 70 | 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 % |
| Nosferatu Crossfire by Mad-Tyas (on 14. January 2025, 08:02) | 19 | 92 % |
| Decapitator by NicoD (on 25. May 2025, 05:30) | 51 | 97 % |
| Verhexte Sudukte by Menxar (on 19. September 2017, 12:53) | 29 | 98 % |
| The Enchantments (GW loop Chaos Deconstruction) by SeveNateNine (on 26. July 2025, 20:55) | 32 | 99 % |
| Angel Investigations by ViKingPrime (on 20. October 2025, 00:45) | 31 | 97 % |
| Copycat Fun by Scojo (on 8. December 2025, 04:35) | 33 | 97 % |
| Taco Bowl 3 - Ring Of Fire by DiMono (on 19. March 2021, 16:15) | 46 | 96 % |
| Yin-Yang Compass Fillomino by MagnusJosefsson (on 13. October 2022, 14:59) | 43 | 100 % |
| Eye of the Storm by TotallyNormalCat (on 11. February 2022, 22:00) | 56 | 97 % |
| Chaos Deconstruction: Sightlines by KNT (on 11. June 2023, 00:07) | 89 | 95 % |
| Differenzen zwischen Summen III (kryptisch) by tuace (on 17. August 2018, 13:23) | 32 | 99 % |
| Disjoint Little Killer Sudoku - 89 Spinning Tops by DiMono (on 6. December 2020, 18:50) | 24 | 96 % |
| 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 % |
