(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 | |
|---|---|---|---|
 | Crossroad by Testarossa (on 18. January 2022, 20:44) | 29 |  95 % |
| POKAL Buchstabenrätsel / Letter Puzzle by DocLogic (on 2. December 2022, 16:30) | 30 | 96 % |
| to the minimal great hidden by aqjhs (on 30. December 2024, 01:23) | 72 | 93 % |
| Primal Instinct (Killer Sudoku) by Agent (on 25. July 2023, 09:00) | 153 | 97 % |
| Orchid's Revenge by Abdul the Killer (on 1. October 2024, 12:34) | 77 | 96 % |
| Wichtelkalender 2014 - April by April (on 1. April 2014, 00:00) | 36 | 98 % |
| So oder so: Koralle mit Doppelsternen by CHalb (on 30. July 2015, 16:24) | 42 | 97 % |
| Chromatic Quiver by Xendari (on 28. March 2022, 06:19) | 90 | 98 % |
| Quint Quads by Ned Howarth (on 29. June 2022, 09:55) | 44 | 93 % |
| A Day for Chaos by DarthParadox (on 31. March 2023, 20:40) | 44 | 91 % |
| Skate by dead_homer (on 19. May 2024, 00:25) | 40 | 92 % |
| Schwarz oder Weiß Koralle III by tuace (on 4. October 2015, 17:09) | 47 | 96 % |
| Gimme Shelter by glum_hippo (on 29. November 2024, 23:01) | 48 | 95 % |
| Smus-X by Qodec (on 25. September 2022, 14:44) | 61 | 95 % |
| Honk! by Nahileon (on 12. February 2023, 22:14) | 60 | 95 % |
| Double, Cross by Black_Doom (on 18. November 2024, 05:54) | 60 | 98 % |
| Japanische Summen - Doppelrätsel mit Primzahlen by ibag (on 27. April 2012, 11:49) | 68 | 99 % |
| Krypto-U-Bahn - knapp daneben by ibag (on 22. May 2013, 22:33) | 44 | 96 % |
| A 38 II by tuace (on 4. September 2016, 17:27) | 58 | 99 % |
| Parity Party V — "Vortex Temporum" by glum_hippo (on 19. April 2020, 06:21) | 31 | 91 % |
