(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 | |
|---|---|---|---|
 | Country Road Fillomino #1 (10x10) by Jesper (on 10. October 2022, 15:41) | 64 |  99 % |
| Circus Maximus by JeffWajes (on 23. March 2026, 10:02) | 70 | 95 % |
| Fairy Rings by Jay Dyer (on 1. January 2022, 20:17) | 58 | 98 % |
| Order! Order! by IcyFruit (on 17. November 2023, 13:57) | 47 | 96 % |
| Unique by TotallyNormalCat (on 5. February 2021, 01:30) | 48 | 98 % |
| Constructing a Murder Scene - Chaos Construction (Killer) by Mr.Menace (on 27. July 2022, 13:28) | 93 | 98 % |
| Peregrine (13x13 Chaos Deconstruction) by Xendari (on 30. April 2023, 16:27) | 47 | 100 % |
| a hot summer nightmare by aqjhs (on 21. August 2025, 12:35) | 43 | 100 % |
| Roller Coaster mit Extras 26 by Uhu (on 10. January 2025, 07:56) | 35 | 100 % |
| Scorpion by IcyFruit (on 31. January 2025, 14:18) | 40 | 91 % |
| Information Paradox (Advanced Black Hole) by heliopolix (on 6. May 2023, 01:38) | 33 | 100 % |
| Crypto Japanese Slitherlink by KNT (on 12. November 2022, 22:43) | 60 | 98 % |
| Miami Zipper by Prof.Dori (on 4. February 2024, 16:05) | 62 | 93 % |
| River Crossing by IcyFruit (on 22. February 2024, 14:37) | 92 | 98 % |
| Japanische Summen-Koralle Knapp Daneben by Uhu (on 16. January 2017, 21:18) | 49 | 98 % |
| Kill o' the Whisp by starwarigami (on 1. June 2022, 20:10) | 27 | 90 % |
| Copycat Copycat by Scojo (on 24. June 2023, 04:05) | 28 | 100 % |
| ¡que lindas trencitas! by aqjhs (on 29. March 2026, 07:17) | 29 | 95 % |
| Mars Attacks! (2T1L CC) by Xenonetix (on 22. August 2022, 03:33) | 57 | 96 % |
| Quandary by grkles (on 25. August 2021, 13:14) | 22 | 99 % |
