(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 | |
|---|---|---|---|
 | Spitting Image by Gene The Supreme (on 16. September 2024, 19:19) | 37 |  95 % |
| Crescent Archery by Xendari (on 14. November 2022, 08:57) | 41 | 93 % |
| Heated Sum Loop by yttrio (on 1. March 2024, 21:06) | 39 | 97 % |
| Hakata (Shikaku Chaos Construction) by sfushidahardy (on 29. July 2024, 07:53) | 75 | 98 % |
| Vertigo Yajilin #1 by Piatato (on 10. April 2024, 00:37) | 32 | 98 % |
| Zipper Sandwich by RockyRoer (on 17. January 2024, 15:23) | 34 | 97 % |
| Krazy Kropki Killer by vidarino (on 19. November 2021, 13:35) | 30 | 93 % |
| Bite Marks by ViKingPrime (on 8. March 2023, 17:00) | 28 | 99 % |
| 25/12 by starwarigami (on 26. December 2022, 21:15) | 65 | 91 % |
| Whose Doubler Is It Anyway? by ViKingPrime (on 23. August 2023, 12:30) | 63 | 97 % |
| 11x11 Classic Star Battle by Phistomefel (on 19. August 2020, 19:31) | 163 | 93 % |
| Dotted around [Kropki Deconstruction] by Christounet (on 10. February 2023, 22:41) | 110 | 97 % |
| Entangled-2-Way-Sudoku by Rawcoder (on 11. May 2020, 18:07) | 25 | 94 % |
| Sandwich Sudoku--肉夹馍(2) by cdwg2000 (on 12. November 2020, 07:11) | 26 | 90 % |
| Orange & Blue by FJL (on 4. December 2022, 15:45) | 26 | 92 % |
| Check the corners by Stoer (on 18. April 2023, 15:13) | 32 | 90 % |
| Roadmap (Region Sum 159) by tallcat (on 2. December 2022, 15:49) | 77 | 94 % |
| Chaos Karussell VI by Luigi (on 16. September 2011, 10:15) | 49 | 94 % |
| Colorguru Chaos Deconstruction by crispy16 (on 30. May 2022, 03:09) | 48 | 97 % |
| Renban Fillomino by MagnusJosefsson (on 26. March 2022, 14:01) | 77 | 98 % |
