(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 | |
|---|---|---|---|
 | Empire State of Mind (Numbered Rooms Skyscraper) by tallcat (on 12. May 2023, 09:00) | 76 |  94 % |
| Digital Sandwich by Prof.Dori (on 30. May 2023, 21:35) | 34 | 94 % |
| Don't be a smarTcaT ! by Christounet (on 19. June 2023, 17:48) | 33 | 98 % |
| Jelly Beans by cristophermoore (on 6. July 2023, 04:10) | 13 | 96 % |
| Appaloosa by Die Hard (on 14. August 2023, 08:43) | 38 | 94 % |
| Sumthing by ThePedallingPianist (on 7. December 2023, 07:33) | 71 | 95 % |
| Dual U-Bahn by Paletron (on 12. April 2024, 20:45) | 27 | 99 % |
| Demiparure by mormagli (on 15. June 2024, 17:28) | 28 | 94 % |
| Double-wrapped X-sums by sanabas (on 19. July 2024, 04:58) | 15 | 92 % |
| Gravity Wells by Tobias Brixner (on 27. October 2024, 10:00) | 13 | 92 % |
| Shade Your Own Puzzle: Fillomino vs Cave ft. Parity #1 (8x8) by Playmaker6174 (on 19. October 2024, 10:30) | 54 | 97 % |
| Vampire Kingdoms by Sotehr (on 21. October 2024, 10:00) | 14 | 92 % |
| Weighted Cells by Oddlyeven (on 12. November 2024, 19:55) | 92 | 97 % |
| Triad by Andrewsarchus (on 22. December 2024, 15:18) | 18 | 94 % |
| The Quaker's Quiver by mathpesto (on 13. January 2025, 05:20) | 50 | 92 % |
| Out of the Loop by oskode (on 15. May 2025, 10:20) | 29 | 97 % |
| Ren-Bahn #2 [Renban U-Bahn] by Christounet (on 6. September 2025, 16:46) | 27 | 99 % |
| Jigsaw by Kaktuslav (on 11. October 2025, 08:00) | 44 | 94 % |
| Chaotic Party Pack by Kafkapharnaum (on 2. January 2026, 05:18) | 25 | 100 % |
| Liar X-Sums by Christounet (on 23. February 2026, 23:18) | 43 | 96 % |
