(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 | |
|---|---|---|---|
 | Transfer Right By 2 by vitaminz (on 24. June 2025, 22:25) | 33 |  92 % |
| kNights, uNite! by Alphish (on 17. July 2020, 02:33) | 37 | 92 % |
| Rätselhausen - cinque relazioni by Statistica (on 1. December 2017, 23:55) | 35 | 97 % |
| Machtwechsel in Rätselhausen by Statistica (on 1. December 2018, 18:18) | 31 | 99 % |
| Why sooo serious ? [2T1L Deconstruction] by Christounet (on 25. April 2024, 22:59) | 33 | 92 % |
| Split the Sums by palpot (on 4. January 2026, 10:00) | 36 | 98 % |
| Thirteen Ghosts by mathpesto (on 19. September 2024, 22:37) | 76 | 98 % |
| Adventskalender 2023, Türchen 13 - Transparentes Yajilin by Zzzyxas (on 13. December 2023, 07:00) | 42 | 94 % |
| Chaotic Equality by Knickolas (on 8. December 2022, 21:07) | 90 | 98 % |
| Pointing parodies by someguy209 (on 21. September 2024, 04:35) | 43 | 92 % |
| The Great Wall by tesseralis (on 9. September 2022, 07:42) | 46 | 98 % |
| Killer Windrad by tuace (on 30. July 2016, 14:45) | 44 | 98 % |
| Sudoku Variants Series (373) - Four Winds Killer by Richard (on 1. June 2022, 01:00) | 62 | 93 % |
| Bodysnatchers by AnalyticalNinja (on 1. October 2024, 20:07) | 126 | 99 % |
| Flaschenpost (Nurikabe Cipher Sudoku) by Agent (on 4. October 2022, 09:00) | 61 | 99 % |
| Entropy X-Sums by Mad-Tyas (on 30. January 2024, 10:12) | 65 | 94 % |
| From A to Zeta: A Zodiac Puzzle by zetamath (on 11. April 2026, 20:07) | 74 | 96 % |
| Ma'at's Judgement - The Weighing of the Heart (Chaos Construction) by Chilly (on 22. November 2022, 16:58) | 86 | 100 % |
| 1. Teil der Trilogie: Ein verliebter Rundweg by berni (on 28. September 2010, 12:34) | 76 | 98 % |
| Ma'at's Transcript: Order from Chaos (Chaos Construction) by Chilly (on 13. July 2022, 13:07) | 95 | 100 % |
