(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 | |
|---|---|---|---|
 | Wichtel 2021 (8): Ideenklau im Sparmodus by wichtel (on 17. October 2022, 12:02) | 32 |  100 % |
| 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) | 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 % |
| Mercurial Maxima by AFrayedKnot (on 13. June 2022, 17:59) | 22 | 99 % |
| Thermodynamics (Thermo, Entropy) by Mad-Tyas (on 13. March 2023, 09:36) | 41 | 90 % |
| Overlarge by Jay Dyer (on 1. May 2023, 14:40) | 73 | 98 % |
| Double? Or Nothing? [Doublers, Killer, Zeroers] by 3good5you (on 6. August 2023, 06:07) | 14 | 94 % |
| Entropy Equilibrium by Mad-Tyas (on 14. November 2023, 09:51) | 15 | 92 % |
| Killocator: Dead or Alive by starwarigami (on 28. February 2024, 10:17) | 22 | 92 % |
| Japanese Japanese Sums Sums #2 by The Book Wyrm (on 12. March 2024, 21:51) | 24 | 99 % |
| Nosferatu Crossfire by Mad-Tyas (on 14. January 2025, 08:02) | 18 | 92 % |
| Decapitator by NicoD (on 25. May 2025, 05:30) | 47 | 97 % |
| The Enchantments (GW loop Chaos Deconstruction) by SeveNateNine (on 26. July 2025, 20:55) | 31 | 99 % |
| Pompeii by Kafkapharnaum (on 25. October 2025, 23:10) | 32 | 99 % |
| Chaos Deconstruction: Sightlines by KNT (on 11. June 2023, 00:07) | 84 | 95 % |
