(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 | |
|---|---|---|---|
 | Doom Loop (Filloku #6) by mormagli (on 12. November 2023, 17:30) | 41 |  98 % |
| Leaving the Basement (U-Bahn) by the_cogito (on 16. October 2024, 18:29) | 41 | 100 % |
| Six Loop by oskode (on 25. August 2025, 06:06) | 43 | 92 % |
| Two's Company, Three's a Crowd by Morisenseiisgod (on 26. October 2025, 09:57) | 42 | 94 % |
| The 3-Colour Theorem by starwarigami (on 10. February 2023, 19:54) | 104 | 96 % |
| The Phantom Locker by Sumanta(ANU) (on 18. March 2025, 04:16) | 112 | 96 % |
| U-Bahn mit gemischten Hinweisen (Teil 2) by Zzzyxas (on 28. December 2019, 13:32) | 48 | 99 % |
| Anti-Springer Killer, "Turfan Fragment" by glum_hippo (on 23. March 2021, 20:14) | 32 | 91 % |
| Boxes Clash by Niverio (on 1. May 2022, 09:43) | 52 | 98 % |
| The Electrified Trio by Playmaker6174 (on 26. August 2023, 09:15) | 28 | 94 % |
| Slingshot Full Rank Fillomino by Piatato (on 27. December 2024, 18:38) | 27 | 100 % |
| Global Entropea by Scojo (on 12. July 2025, 18:26) | 54 | 98 % |
| Mut zur Lücke! by Wuschel (on 28. October 2023, 16:14) | 70 | 98 % |
| 5-Stern-Star-Battle by CJK (on 2. July 2021, 10:17) | 42 | 94 % |
| Paradox by Xenonetix (on 5. June 2022, 01:11) | 32 | 96 % |
| Horst and Graben (Renban, German Whispers, Kropki pairs) by Bellsita (on 24. August 2022, 01:32) | 36 | 98 % |
| Battle With The Archers 39: The Lifeline of Three Worlds by Playmaker6174 (on 19. June 2023, 10:11) | 38 | 98 % |
| Crime of Passion by lmdemasi (on 24. December 2023, 12:13) | 40 | 93 % |
| Orla The Octopus by ThePedallingPianist (on 9. February 2024, 19:41) | 39 | 98 % |
| Know Your Rank by Kaktuslav (on 18. October 2025, 08:00) | 36 | 90 % |
