(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 | |
|---|---|---|---|
 | Roller Coaster mit Extras 13 by Uhu (on 21. March 2019, 22:34) | 46 |  99 % |
| Chillicothe by glum_hippo (on 4. October 2023, 18:11) | 46 | 94 % |
| Chaos by Nahileon (on 26. February 2022, 19:06) | 20 | 97 % |
| Information Paradox (Advanced Black Hole) by heliopolix (on 6. May 2023, 01:38) | 18 | 100 % |
| Atlantis by Kafkapharnaum (on 26. May 2023, 23:22) | 19 | 100 % |
| Despair by XeonRisq (on 3. March 2024, 21:00) | 19 | 97 % |
| It Takes a Village by lmdemasi (on 25. September 2024, 01:09) | 37 | 95 % |
| Rätselsuppe III by Luigi (on 30. June 2010, 08:04) | 77 | 96 % |
| Di-agony! by ThePedallingPianist (on 24. November 2022, 17:07) | 62 | 97 % |
| Building between by Paletron (on 10. August 2023, 20:20) | 56 | 95 % |
| Silvester by PulverizingPancake (on 24. January 2022, 02:00) | 39 | 98 % |
| Purple Archery Arrows by antiknight (on 9. October 2022, 17:25) | 56 | 94 % |
| Chaos Construction: Sightlines by KNT (on 3. June 2022, 07:40) | 125 | 99 % |
| Parity Party VII — "Party Sandwiches" by glum_hippo (on 25. April 2020, 23:24) | 18 | 94 % |
| Sun Chariot by Miky (on 14. April 2021, 00:17) | 40 | 94 % |
| Wichtel 2021 (7): In der Weihnachtsbäckerei by wichtel (on 4. October 2022, 21:02) | 15 | 100 % |
| My cup runneth over intensely by Fool on Hill (on 19. August 2022, 13:29) | 20 | 95 % |
| Die Kryptos - S05E04: Zelte und Bäume by tuace (on 1. September 2022, 20:22) | 15 | 98 % |
| Japanese Cave by KNT (on 29. August 2022, 05:29) | 47 | 99 % |
| Symphony (Entropy Killer) by Mad-Tyas (on 6. February 2023, 08:28) | 36 | 97 % |
