(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 | |
|---|---|---|---|
 | Chaotic Indexers by mathpesto (on 15. July 2022, 22:15) | 35 |  100 % |
| Two Rights and a Wrogn by SirWoezel (on 20. July 2022, 21:57) | 37 | 95 % |
| Bashful Cages by Ennead (on 30. November 2022, 21:21) | 32 | 93 % |
| Secret Pressure by Wuschel (on 13. March 2023, 18:53) | 38 | 91 % |
| The Keep (w/ Palfly Kampling) by Myxo (on 31. January 2025, 15:00) | 74 | 93 % |
| Zodiac-Killer VI : Virgo by Eisbär (on 8. September 2011, 23:56) | 62 | 96 % |
| Irregular Miracle by emmettcito (on 12. August 2020, 01:56) | 40 | 91 % |
| Battle With The Archers - The Lost Puzzle: Partition by Playmaker6174 (on 29. January 2022, 18:05) | 35 | 97 % |
| The 8th Room by antiknight (on 24. July 2022, 22:50) | 37 | 95 % |
| Poisson Ratio by cam (on 23. December 2022, 21:35) | 35 | 94 % |
| Mexican Train by ViKingPrime (on 9. May 2023, 14:00) | 33 | 99 % |
| Connect the Dots by Sabrar (on 24. June 2023, 11:15) | 40 | 90 % |
| ❤ by psninn (on 13. November 2024, 15:11) | 32 | 95 % |
| The Right Distance by Kaktuslav (on 20. November 2025, 08:00) | 64 | 99 % |
| Rätselwochenende 2013: Rätselkreis by pwahs (on 13. March 2013, 18:30) | 61 | 99 % |
| Roller Coaster mit Extras 23 by Uhu (on 27. August 2021, 22:18) | 31 | 99 % |
| Battle With The Archers 30: Silent Threat II - Hidden Plan by Playmaker6174 (on 1. April 2022, 12:21) | 34 | 96 % |
| Region Sums Sandwich by RockyRoer (on 9. April 2022, 13:56) | 33 | 95 % |
| Infrared [Sum Detector Fillomino] by MicroStudy (on 24. March 2023, 20:45) | 60 | 100 % |
| Lines And Circles by Jeet Sampat (on 8. April 2023, 13:18) | 31 | 93 % |
