(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 | |
|---|---|---|---|
 | Japanese Dominos by KNT (on 14. March 2024, 15:59) | 52 |  99 % |
| Dynamic Construction by Niverio (on 6. April 2022, 00:26) | 42 | 99 % |
| Eine Runde Inselhopping mit Höhlentour by tuace (on 29. July 2014, 08:30) | 27 | 98 % |
| Make Room by Jay Dyer (on 5. July 2023, 00:36) | 32 | 96 % |
| Double Loop Japanese Sums by Agent (on 26. February 2024, 09:00) | 33 | 96 % |
| Pentomino Sudoku by KNT (on 11. June 2022, 17:22) | 47 | 97 % |
| Kropkiflotte auf hoher See III by Luigi (on 30. October 2014, 13:51) | 19 | 94 % |
| Colossal Tapa and Chaos (ft. KNT) by wooferzfg (on 6. May 2023, 06:00) | 44 | 100 % |
| Soap Opera by Jay Dyer (on 28. January 2024, 21:19) | 40 | 92 % |
| Kurotto Killer Sudoku by KNT (on 29. July 2022, 04:21) | 72 | 95 % |
| Roller Coaster mit Extras 16 by Uhu (on 5. March 2020, 07:34) | 29 | 99 % |
| Star-Crossed Sandwiches by DarthParadox (on 25. January 2024, 01:26) | 31 | 92 % |
| Uncopyrightable Cavino by PrimeWeasel (on 5. September 2024, 22:48) | 32 | 100 % |
| Tetropolis by sfushidahardy (on 4. October 2024, 17:18) | 31 | 99 % |
| Satan Whispers by damasosos92 (on 19. February 2024, 16:42) | 39 | 92 % |
| There is still life in my sandwich... by Sktx (on 15. May 2021, 00:49) | 19 | 94 % |
| 1-N Chaos Deconstruction: Whisper / Renban / Between by KNT (on 14. May 2022, 16:49) | 56 | 95 % |
| Watermill by lerroyy (on 15. May 2022, 22:44) | 31 | 97 % |
| Knot in the Crosshairs by antiknight (on 13. December 2022, 23:40) | 32 | 95 % |
| Second Region X-Sums Chaos #2 by Elliptical (on 18. January 2023, 22:58) | 18 | 94 % |
