(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 | |
|---|---|---|---|
 | Faces by Pallando (on 11. March 2022, 11:53) | 22 |  100 % |
| Schrödinger's Leopard by tesseralis (on 12. July 2022, 11:52) | 42 | 99 % |
| Cliques by purpl (on 22. August 2022, 22:40) | 25 | 92 % |
| Robin Hood (Anti-king, Arrow Sudoku) by juddimal (on 2. September 2022, 23:39) | 33 | 91 % |
| Ringworms by XeonRisq (on 8. September 2022, 05:00) | 34 | 92 % |
| Self-determination 2 by stephane.bura (on 3. November 2022, 14:20) | 18 | 94 % |
| Don't be a smarTcaT ! by Christounet (on 19. June 2023, 17:48) | 33 | 98 % |
| Prison Break by Myxo (on 9. July 2023, 11:51) | 108 | 97 % |
| Appaloosa by Die Hard (on 14. August 2023, 08:43) | 38 | 94 % |
| Sumthing by ThePedallingPianist (on 7. December 2023, 07:33) | 70 | 95 % |
| Dual U-Bahn by Paletron (on 12. April 2024, 20:45) | 27 | 99 % |
| Propeller by Scojo (on 30. April 2024, 10:53) | 15 | 94 % |
| Demiparure by mormagli (on 15. June 2024, 17:28) | 28 | 94 % |
| Double-wrapped X-sums by sanabas (on 19. July 2024, 04:58) | 14 | 92 % |
| Wichtels Rätselsommer 2024 (1): Bahnlinienplanung im Wunderwald by wichtel (on 11. August 2024, 20:23) | 30 | 100 % |
| Shade Your Own Puzzle: Fillomino vs Cave ft. Parity #1 (8x8) by Playmaker6174 (on 19. October 2024, 10:30) | 52 | 97 % |
| Vampire Kingdoms by Sotehr (on 21. October 2024, 10:00) | 14 | 92 % |
| RAT RUN 19: Brainwaves by marty_sears (on 18. December 2024, 01:00) | 560 | 96 % |
| Triad by Andrewsarchus (on 22. December 2024, 15:18) | 18 | 94 % |
| Relationship Status: It's Complicated by 99%Sneaky (on 17. January 2025, 16:25) | 56 | 94 % |
