(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 | |
|---|---|---|---|
 | Renmometers by Jeet Sampat (on 1. June 2022, 21:50) | 45 |  92 % |
| Levity by Emphyrio (on 29. October 2022, 09:51) | 47 | 94 % |
| Vibrations (Killer, Thermo) by Niverio (on 30. September 2023, 17:01) | 134 | 95 % |
| Mictlāntēcutli (Castle Wall + U-Bahn) by sfushidahardy (on 21. May 2025, 05:37) | 42 | 97 % |
| Colours in the (k)night XII by Villse (on 14. September 2025, 16:57) | 155 | 96 % |
| Knight Fever by apiyo (on 31. January 2021, 03:19) | 61 | 96 % |
| Even X-Sums by Realshaggy (on 24. December 2021, 05:00) | 50 | 97 % |
| Where No Snake Has Gone Before by Nordy (on 13. July 2022, 20:43) | 51 | 99 % |
| Sett Theory by marty_sears (on 11. August 2024, 20:47) | 126 | 98 % |
| Waben Summenhochhauskropki Triple Invers und knapp daneben by Luigi (on 15. February 2010, 12:31) | 32 | 93 % |
| Loses Kalenderblatt April 2015 by April (on 1. April 2015, 00:00) | 29 | 97 % |
| Boundless (Many Variants!) by Aaronomys (on 31. May 2021, 11:28) | 16 | 96 % |
| Crossroad by Testarossa (on 18. January 2022, 20:44) | 33 | 94 % |
| Chaos Construction: Sightlines by Jay Dyer (on 5. March 2022, 16:15) | 77 | 98 % |
| Linked Lists by Innocuous (on 22. September 2022, 19:42) | 19 | 90 % |
| Balanced Sudoku #02 by Nell Gwyn (on 24. September 2022, 04:50) | 14 | 98 % |
| Jigsaw-doku by jwsinclair (on 3. October 2022, 20:31) | 28 | 98 % |
| Disoriented (Chaos Construction) by Agent (on 3. January 2023, 09:00) | 59 | 99 % |
| Tree Of Dominos by Jobo (on 11. March 2023, 11:13) | 15 | 92 % |
| Lithium + Neon by 99%Sneaky (on 14. June 2023, 19:58) | 16 | 98 % |
