(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 | |
|---|---|---|---|
 | Sega Cages by Prof.Dori (on 31. December 2023, 15:17) | 18 |  96 % |
| Angle of Attack by bodemeister (on 12. May 2024, 02:46) | 14 | 94 % |
| ABC-Box Hybrid 1.2: A Beautiful Cave (12x12) by Playmaker6174 (on 10. June 2024, 08:30) | 33 | 100 % |
| 4321 (Palindrome XV) by ProRock (on 7. July 2024, 17:25) | 16 | 90 % |
| Zoom Out by Myxo (on 30. July 2024, 12:22) | 117 | 99 % |
| Rank Up 12 - Doublers by ThePedallingPianist (on 2. August 2024, 03:20) | 36 | 91 % |
| Inner Square Diagonals by Phistomefel (on 12. August 2024, 13:31) | 97 | 97 % |
| Reign of Arrows (Anti-knight, Arrows) by juddimal (on 8. January 2025, 02:53) | 91 | 95 % |
| Snakes of Chaos by Andrewsarchus (on 14. January 2025, 15:59) | 121 | 99 % |
| Rank Up 19 - Permaculture by ThePedallingPianist (on 17. March 2025, 01:00) | 28 | 100 % |
| Fearfully and Wonderfully Made by MathGuy_12 (on 19. April 2025, 00:52) | 24 | 95 % |
| Concurrence by Oddlyeven (on 31. May 2025, 01:34) | 20 | 94 % |
| The Nuts by juggler (on 8. July 2025, 23:44) | 49 | 95 % |
| The third wheel by chameleon (on 13. October 2025, 13:19) | 27 | 93 % |
| Minimality by Andrewsarchus (on 18. December 2025, 05:30) | 24 | 97 % |
| Happ(Y) Birthda(Y), ChinStrap! by SennyK (on 3. May 2026, 03:00) | 19 | 96 % |
| Moat Swimmer by PjoeterBliep (on 6. May 2026, 17:46) | 23 | 100 % |
| The Wall by juggler (on 5. June 2025, 19:37) | 139 | 98 % |
| Red Lodge, Montana (Sudoku-Creek Hybrid) by mathpesto (on 24. December 2023, 17:10) | 122 | 97 % |
| Killer - Region Sum Lines - Cave by abed hawila (on 9. May 2022, 20:41) | 71 | 100 % |
