(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 | |
|---|---|---|---|
 | +1 by ICHTUES (on 21. November 2021, 06:00) | 22 |  94 % |
| X-Medians by RockyRoer (on 24. November 2021, 12:50) | 17 | 95 % |
| Combination Lock by Jay Dyer (on 9. December 2021, 00:22) | 22 | 95 % |
| Crisis of Faith by Jay Dyer (on 13. December 2021, 20:08) | 10 | 95 % |
| American Whispers - purpl Collab by the_cogito (on 20. February 2022, 14:37) | 14 | 96 % |
| All My 5s Gone by wooferzfg (on 25. February 2022, 16:00) | 15 | 90 % |
| The Clouds Give Way (Killer) by Aaronomys (on 6. March 2022, 18:35) | 48 | 96 % |
| VIKNA (Windows) by ypkoval (on 27. April 2022, 21:23) | 31 | 94 % |
| Unicycles by starwarigami (on 3. May 2022, 11:04) | 11 | 98 % |
| Don't Touch by Scruffamudda (on 28. June 2022, 07:54) | 17 | 92 % |
| The Square Wheel by EricRathbun (on 21. August 2022, 16:26) | 28 | 92 % |
| Zero Ambiguity by XeonRisq (on 17. July 2022, 01:00) | 17 | 95 % |
| Why Did It Have To Be Snakes? by DadJokes (on 7. September 2022, 18:41) | 34 | 96 % |
| Wheat, Oats and Poppy by jcgodart (on 15. October 2022, 08:19) | 20 | 93 % |
| Rope Skipping by Mad-Tyas (on 6. December 2022, 05:32) | 23 | 91 % |
| Bite Marks by ViKingPrime (on 8. March 2023, 17:00) | 31 | 99 % |
| Overlaps by damasosos92 (on 13. March 2023, 01:20) | 33 | 91 % |
| Unos - 8x8 Sudoku Pack by Joseph nehme (on 15. March 2023, 08:55) | 30 | 95 % |
| Merry Christmas Zetamath! by Scojo (on 27. March 2023, 01:29) | 42 | 93 % |
| The Big Bang by EricRathbun (on 12. June 2023, 14:23) | 39 | 95 % |
