(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 | |
|---|---|---|---|
 | 3's Company by the_cogito (on 30. November 2021, 20:00) | 12 |  100 % |
| Unique Arrow Sudoku by tsergiiv (on 19. March 2022, 08:07) | 15 | 93 % |
| Tutotu by Fafrd (on 10. June 2022, 02:35) | 25 | 97 % |
| BTNCA by ICHTUES (on 3. July 2022, 06:00) | 46 | 96 % |
| Position Sums: Fillomino (11x11) by ONeill (on 20. October 2022, 05:59) | 42 | 100 % |
| Wonky Numbers by ThePedallingPianist (on 28. November 2022, 23:09) | 15 | 94 % |
| Yin Yang Squares by Celery (on 21. January 2023, 00:04) | 29 | 94 % |
| Modunacci by Goofy (on 16. February 2023, 00:02) | 15 | 91 % |
| Palinsums by SenatorGronk (on 25. April 2023, 18:15) | 13 | 91 % |
| Stopwatch by heliopolix (on 25. August 2023, 18:09) | 35 | 93 % |
| Indirect Communication by blackjackfitz (on 19. February 2024, 15:08) | 26 | 97 % |
| Domino Effect by vitaminz (on 12. April 2024, 15:49) | 70 | 96 % |
| Arrow 100 by Mad-Tyas (on 2. September 2024, 13:30) | 26 | 90 % |
| Anticlockwise by juggler (on 22. December 2024, 22:58) | 58 | 97 % |
| Strudel (Killer, Diagonal) by Chefofdeath (on 2. May 2025, 04:28) | 47 | 91 % |
| Union Intersection by morrisjb (on 11. June 2025, 02:46) | 12 | 98 % |
| Red + Blue = Purple by Kaktuslav (on 21. July 2025, 17:54) | 86 | 97 % |
| Arrows of War by DubiousMobius (on 22. July 2025, 01:03) | 17 | 98 % |
| There's a 1 at 3:00 by Md88keys (on 30. August 2025, 20:52) | 25 | 94 % |
| Bahamas by Qodec (on 24. April 2021, 20:43) | 115 | 97 % |
