(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 | |
|---|---|---|---|
 | Windmill by FryTheGuy (on 4. October 2021, 21:26) | 31 |  96 % |
| Aquarium Escape by zegres (on 6. January 2022, 19:58) | 29 | 92 % |
| Battle With The Archers 26: Reunion (aka Unity II) by Playmaker6174 (on 7. January 2022, 09:17) | 55 | 97 % |
| Chaotic Measures by Andrewsarchus (on 1. May 2022, 08:18) | 28 | 95 % |
| Chain Reaction (Killer Sudoku) by AstralSky (on 5. December 2022, 15:53) | 61 | 92 % |
| S-Thermo by Prof.Dori (on 11. May 2023, 12:42) | 32 | 93 % |
| Aquanuradoku by Mennoo_ (on 6. March 2024, 21:33) | 58 | 90 % |
| TetromUNO by yanggang (on 30. May 2024, 20:09) | 31 | 95 % |
| Dragon Ball / ドラゴンボール / 龍珠 by MonsieurTRISTE (on 10. January 2025, 09:23) | 28 | 92 % |
| In The Zone by EdTheAlchemist (on 4. November 2025, 13:54) | 68 | 94 % |
| Star of Bethlehem by Aspartagcus (on 25. December 2025, 03:25) | 62 | 95 % |
| Leaning Tower Of ZooZ by Joseph nehme (on 7. January 2022, 18:47) | 102 | 96 % |
| Whirlygig (Renban Whisper) by tallcat (on 15. April 2022, 16:59) | 103 | 97 % |
| Locust by antiknight (on 5. August 2022, 00:03) | 42 | 93 % |
| Treasure Map by FryTheGuy (on 7. September 2021, 05:36) | 49 | 97 % |
| The Vs by ademjaz (on 12. October 2022, 00:19) | 58 | 93 % |
| Reflections by EricRathbun (on 1. July 2024, 15:13) | 55 | 96 % |
| Cradle by Xenonetix (on 28. October 2024, 22:55) | 56 | 92 % |
| Halcyon by NicoD (on 27. December 2025, 05:30) | 54 | 98 % |
| Pliers (Anti-King Thermo Sudoku) by Phistomefel (on 17. October 2022, 08:44) | 254 | 97 % |
