(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 | |
|---|---|---|---|
 | Pet Shop Panic! by tesseralis (on 3. October 2022, 09:37) | 31 |  96 % |
| Crossbeams (Little Killer) by Gliperal (on 7. October 2020, 02:25) | 31 | 98 % |
| Siamese Coral (2) by KNT (on 9. March 2023, 00:10) | 34 | 99 % |
| Chaos Meidjudokuluk by tesseralis (on 14. October 2023, 07:19) | 30 | 100 % |
| Hochhäuser in Japanischen Summen, Teil 2 by pirx (on 27. April 2017, 18:00) | 32 | 97 % |
| Chaos Construction: Roller Coaster by KNT (on 9. February 2023, 01:18) | 67 | 100 % |
| Kitchen Nightmare (Sandwich Chaos Construction) by Tacosian (on 14. November 2023, 05:01) | 31 | 99 % |
| Quite a Mouthful by Gliperal (on 2. January 2021, 23:49) | 30 | 96 % |
| Roller Coaster Yin Yang Cipher by Piatato (on 26. December 2022, 11:26) | 29 | 100 % |
| Palindrome Portals by TotallyNormalCat (on 1. January 2021, 23:00) | 37 | 90 % |
| Shade Your Own Puzzle: Fillomino vs Cave ft. Parity #2 (15x15) by Playmaker6174 (on 25. October 2024, 19:00) | 31 | 99 % |
| Wichtel 2016 (11): Frohe Weihnachten! by wichtel (on 1. October 2017, 22:00) | 26 | 92 % |
| Megha-Tropiques by Xenonetix (on 14. February 2022, 21:00) | 25 | 95 % |
| Layla by mith (on 3. October 2022, 19:11) | 84 | 93 % |
| Rosette by Gliperal (on 26. August 2022, 02:43) | 25 | 94 % |
| Serial Duplex by Jay Dyer (on 29. October 2022, 17:46) | 33 | 99 % |
| Japanische Bahnhöfe, Teil 3 by pirx (on 27. May 2020, 13:00) | 25 | 100 % |
| Wichtel 2022 (2): Die neue Wichtel-U-Bahn by wichtel (on 6. September 2023, 09:09) | 24 | 97 % |
| Nuriquarium Sudoku by Jay Dyer (on 26. January 2023, 12:46) | 50 | 95 % |
| Geschenk für pin7guin: Kropki-U-Bahn unter Kropki-Hochhäusern by Zzzyxas (on 6. September 2013, 00:00) | 44 | 98 % |
