(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 | |
|---|---|---|---|
 | Zoom by matt383 (on 22. March 2023, 13:49) | 80 |  95 % |
| Chiaroscuro-doku by yttrio (on 8. March 2025, 02:03) | 120 | 98 % |
| Jubiläumsrätsel - 4 Jahre Rätselportal by Richard (on 1. November 2012, 00:00) | 87 | 98 % |
| X Marks The Spot by Djmelee3000 (on 11. September 2020, 08:51) | 48 | 97 % |
| Supermoon by ViKingPrime (on 19. October 2024, 21:45) | 48 | 96 % |
| ¡Dame Quince! (Killer Sudoku) by sujoyku (on 30. March 2025, 15:40) | 158 | 96 % |
| Imperfect Miracle by Las4one (on 2. August 2025, 02:00) | 74 | 95 % |
| Wichtelkalender 2014 - Dezember: Der Weg des Weihnachtsmannes by Statistica (on 1. December 2014, 00:12) | 75 | 99 % |
| Steckkisten (3) by BFaw (on 25. August 2013, 14:00) | 19 | 90 % |
| Six Pathway-Linked Puzzles by Genomico (on 22. September 2020, 15:36) | 36 | 97 % |
| V's by ICHTUES (on 23. May 2021, 06:00) | 21 | 93 % |
| Amnesia by Dave252 (on 3. August 2021, 16:37) | 19 | 98 % |
| You've Got Mail! by starwarigami (on 29. September 2021, 00:40) | 21 | 90 % |
| NNN by mith (on 28. March 2022, 23:09) | 42 | 96 % |
| Zig by grkles (on 29. May 2022, 20:40) | 50 | 96 % |
| (1)59.(4) by twototenth (on 31. May 2022, 08:00) | 35 | 96 % |
| Companions by Joseph nehme (on 3. November 2022, 09:46) | 20 | 92 % |
| A-Sums X Sandwich by ICHTUES (on 29. January 2023, 06:00) | 58 | 96 % |
| Whispers of Entropy 2: Balance by Mad-Tyas (on 6. March 2023, 09:01) | 37 | 97 % |
| Escape the Programmer's Vortex by Oddlyeven (on 31. March 2023, 02:45) | 18 | 93 % |
