(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 | |
|---|---|---|---|
 | RAT RUN 8: Discontinuous by marty_sears (on 24. July 2024, 01:00) | 509 |  97 % |
| Adventskalender-ABCtje by StefanSch (on 30. November 2012, 00:00) | 34 | 91 % |
| Would you like that toasted? by vitaminz (on 10. July 2024, 03:21) | 38 | 93 % |
| Säntis (collab with ICHTUES) by Florian Wortmann (on 25. October 2023, 20:05) | 121 | 96 % |
| ThermoXidil by fritzdis (on 17. March 2021, 04:48) | 45 | 95 % |
| Little Killer Madness by djorr (on 22. September 2021, 14:00) | 40 | 93 % |
| Twice a night by Fool on Hill (on 10. May 2023, 08:30) | 43 | 92 % |
| No Odd Cages (Parity line / killer sudoku) by Mr.Menace (on 11. June 2023, 09:01) | 41 | 96 % |
| Wichtel 2013 (11 und Schluss): Schwere Entscheidung by wichtel (on 17. June 2014, 13:20) | 40 | 95 % |
| Hurray for René by Richard (on 9. January 2021, 00:00) | 51 | 96 % |
| Two Trips by igniteice (on 1. January 2024, 00:48) | 54 | 95 % |
| Gegentakt by Myxo (on 27. July 2024, 11:33) | 100 | 97 % |
| Dynamic Quiver by Niverio (on 22. November 2023, 18:41) | 49 | 98 % |
| cento mani e cento occhi by aqjhs (on 28. October 2024, 05:22) | 57 | 96 % |
| Perfect by Jobo (on 9. November 2024, 00:28) | 55 | 92 % |
| U-Bahn unter Hochhäusern (Teil 9) by Zzzyxas (on 5. May 2012, 18:21) | 53 | 98 % |
| The Dirty Dozen by twototenth (on 28. June 2022, 08:00) | 51 | 97 % |
| Jubiläumsrätsel - 2 Jahre Rätselportal by Richard (on 1. November 2010, 00:00) | 70 | 94 % |
| Partial Killer I "Windmühle" by glum_hippo (on 18. September 2020, 18:15) | 78 | 96 % |
| Twin Killer Sudoku V by Richard (on 16. March 2012, 12:00) | 71 | 94 % |
