(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 | |
|---|---|---|---|
 | Tharrmows by Leto (on 6. February 2024, 17:35) | 41 |  90 % |
| Areal Sudoku by ICHTUES (on 4. February 2021, 12:26) | 73 | 96 % |
| Battle With The Archers 12: Silent Threat by Playmaker6174 (on 21. August 2021, 17:17) | 42 | 95 % |
| 1000 Rooms by Qodec (on 10. May 2022, 22:37) | 43 | 94 % |
| Constellation by tenaliraman (on 15. July 2022, 09:03) | 44 | 97 % |
| Battle With The Archers 35: The Conflict of Three Worlds by Playmaker6174 (on 8. September 2022, 03:57) | 46 | 96 % |
| Numbered Rooms Sudoku by Qodec (on 24. January 2022, 19:19) | 112 | 97 % |
| Three is a Crowd Sudoku by rk1970 (on 22. April 2020, 09:26) | 40 | 95 % |
| Wichtel 2019 (4): Unvollendet ausgegraben by wichtel (on 17. August 2020, 20:10) | 24 | 99 % |
| Timid Dominoes by Genomico (on 15. August 2020, 02:13) | 30 | 100 % |
| DSM Qualitraining 2021: Average Arrows by Realshaggy (on 17. January 2021, 06:00) | 40 | 97 % |
| Anti-King Arrow X Killer by ICHTUES (on 21. March 2021, 06:00) | 27 | 94 % |
| 007 - Licence to Kill by Kafkapharnaum (on 25. March 2021, 19:45) | 15 | 95 % |
| Revenge of the Hash (Irregular Thermo Sudoku) by lavaloid (on 9. May 2021, 11:00) | 13 | 95 % |
| Steering Wheel (Classic) by SudokuExplorer (on 14. August 2021, 02:00) | 60 | 91 % |
| Renban/Skyscrapers Sudoku by MagnusJosefsson (on 11. September 2021, 13:47) | 26 | 95 % |
| Battle With The Archers 21: The Order of Three Worlds by Playmaker6174 (on 19. November 2021, 16:56) | 42 | 98 % |
| Whirlpool Around 5 by Cane_Puzzles (on 21. November 2021, 08:32) | 12 | 95 % |
| Baltimore by ICHTUES (on 2. January 2022, 06:00) | 52 | 97 % |
| SiXteen by djorr (on 22. April 2022, 14:00) | 14 | 95 % |
