(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 | |
|---|---|---|---|
 | Little Talks 2 by djorr (on 8. August 2022, 14:00) | 19 |  93 % |
| Game, set and no three in the corner by Fool on Hill (on 18. August 2022, 13:00) | 22 | 93 % |
| Whisper Loop-de-Loop by yttrio (on 25. May 2023, 17:57) | 93 | 98 % |
| ∞ Interfering Loops ∞ by ElChiglia (on 18. October 2023, 18:37) | 39 | 97 % |
| Guns of Icarus by PulverizingPancake (on 2. August 2024, 17:02) | 86 | 94 % |
| One Sum Yin & Yang by Visumation (on 9. June 2025, 10:25) | 82 | 95 % |
| All Four One by AnalyticalNinja (on 15. December 2025, 20:45) | 18 | 92 % |
| The Straight and Narrow (Two Truths and a Lie) by ViKingPrime (on 27. April 2026, 12:00) | 20 | 90 % |
| Symmetrien 7 by julius64 (on 25. June 2011, 00:07) | 72 | 95 % |
| Wichtel 2016 (5): Stallungen am Nordpol by wichtel (on 12. June 2017, 22:00) | 33 | 96 % |
| German Sandwiches by Scruffamudda (on 16. March 2022, 07:34) | 41 | 98 % |
| Degraded Cells (Juggler Impression) by gdc (on 9. September 2024, 18:15) | 41 | 96 % |
| Temperamental Triplets by rockratzero (on 16. September 2022, 17:34) | 67 | 96 % |
| ROCK STAR - Buchstabenrätsel by DocLogic (on 5. February 2020, 19:28) | 40 | 92 % |
| Constellation Sudoku by Gliperal (on 29. August 2020, 10:08) | 20 | 93 % |
| Build Your Own Anti-Knight Sudoku by DiMono (on 24. October 2020, 17:41) | 22 | 94 % |
| Leapfrog Sudoku by stephane.bura (on 3. December 2020, 20:00) | 19 | 97 % |
| Poison Darts by LKegel (on 31. January 2021, 10:57) | 20 | 97 % |
| Whirlpool by Xailran (on 20. September 2021, 13:04) | 17 | 91 % |
| Juosan Division by Jay Dyer (on 16. December 2021, 23:30) | 20 | 97 % |
