(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 | |
|---|---|---|---|
 | Ripples by riffclown (on 4. August 2023, 21:59) | 71 |  96 % |
| Dominobrücken (Teil 3) by Zzzyxas (on 26. October 2015, 19:55) | 38 | 94 % |
| ZAUBERN - MAGIE - Buchstabenrätsel by DocLogic (on 13. February 2020, 22:25) | 37 | 90 % |
| Grand-Prix 2019 Leftover: Regionales Yajilin by JonaS2010 (on 13. March 2020, 18:19) | 44 | 93 % |
| The XV Killers (XV Series #1) by Stavros96 (on 14. September 2020, 16:00) | 39 | 97 % |
| Dominoes in a fish tank by egubachu (on 23. April 2024, 20:03) | 43 | 91 % |
| Canal View Japanese Sums by Agent (on 28. May 2024, 09:00) | 40 | 99 % |
| Deconstructed Fog by DiMono (on 11. September 2024, 19:24) | 38 | 94 % |
| Undeca Error (Killer, Anti-Knight) by Chilly (on 5. September 2022, 19:28) | 88 | 96 % |
| 0123-Rätsel (4) by BFaw (on 16. June 2016, 10:00) | 39 | 92 % |
| Wichtel 2017 (11): Doppelte japanische Summen (mit Baukasten) by wichtel (on 11. December 2018, 09:05) | 44 | 96 % |
| Súmmetros by Lisztes (on 1. October 2021, 01:00) | 45 | 97 % |
| Kings and/or Knights by Scruffamudda (on 5. August 2022, 03:08) | 45 | 94 % |
| Under the Hill by Jay Dyer (on 16. January 2023, 22:51) | 47 | 97 % |
| Bagels & Deli by ICHTUES (on 3. September 2023, 06:00) | 43 | 97 % |
| Ambiguous Slitherlink by Agent (on 28. April 2024, 09:00) | 47 | 99 % |
| Snake Egg Sudoku by Phistomefel (on 31. May 2020, 00:19) | 98 | 98 % |
| Roller Coaster mit Extras 4 by Uhu (on 22. February 2018, 09:27) | 62 | 100 % |
| Molopo (XY-Differences Sudoku) by Qodec (on 29. March 2024, 15:34) | 68 | 95 % |
| Milchstraße (Sektor 23C) by usp (on 5. November 2014, 00:00) | 40 | 95 % |
