(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 | |
|---|---|---|---|
 | Sumro by Myxo (on 25. May 2023, 15:49) | 31 |  99 % |
| SC32 - Double Arrow by kuraban (on 4. June 2023, 14:24) | 16 | 94 % |
| A Fillomino for the Bees by mathpesto (on 13. June 2023, 19:53) | 44 | 95 % |
| Hyperdrive by Myxo (on 20. June 2023, 14:22) | 37 | 95 % |
| Loopline by jojo81gaming (on 27. July 2023, 21:43) | 11 | 98 % |
| It's Raining Arrows by EricRathbun (on 1. October 2023, 08:38) | 20 | 92 % |
| Runic Chaos by Sprechta (on 8. August 2023, 20:13) | 29 | 96 % |
| Wurtzite by heliopolix (on 17. August 2023, 22:06) | 13 | 98 % |
| [159] Windmill by W1DEMAN (on 7. September 2023, 05:32) | 46 | 93 % |
| Yin × Yang = ? by SparkNights (on 9. September 2023, 04:00) | 45 | 95 % |
| Star Killer Part 6: Cold Space by FischmitFahrrad (on 8. January 2024, 20:00) | 19 | 96 % |
| Buy Somethin' Will Ya! by ViKingPrime (on 17. September 2023, 21:00) | 20 | 99 % |
| Nowhere to Run (Arrow Sudoku) by AnalyticalNinja (on 1. October 2023, 02:26) | 26 | 94 % |
| Japanese Sums #4: Pinpoint by Myxo (on 5. October 2023, 10:49) | 53 | 98 % |
| Line Of Sight by arbitrary (on 17. October 2023, 01:05) | 29 | 93 % |
| Tilt-a-Whirl by zetamath (on 17. October 2023, 17:38) | 67 | 92 % |
| Lockenweide by Myxo (on 14. November 2023, 12:57) | 56 | 93 % |
| Alarm by zetamath (on 14. November 2023, 01:29) | 53 | 91 % |
| Geometry Exam #4 by Blashyrkh (on 19. November 2023, 17:13) | 30 | 92 % |
| Leehwnip [Nabner] by Miky (on 22. November 2023, 20:47) | 57 | 97 % |
