(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 | |
|---|---|---|---|
 | Cheryl's Sudoku by Elytron (on 3. June 2025, 03:50) | 179 |  96 % |
| Wichtelkalender 2014 - April by April (on 1. April 2014, 00:00) | 37 | 98 % |
| Anti King XL Thermo Killer by MavericksJD (on 24. October 2020, 20:05) | 28 | 96 % |
| Encaged 9 by Joseph nehme (on 3. January 2021, 12:20) | 67 | 99 % |
| Off with their heads! (Decapitated arrow sudoku) by Aspartagcus (on 8. September 2021, 08:38) | 18 | 98 % |
| Just do the Moth! by Nahileon (on 21. December 2021, 20:43) | 22 | 94 % |
| Chromatic Quiver by Xendari (on 28. March 2022, 06:19) | 96 | 98 % |
| Tension by wooferzfg (on 19. June 2022, 08:27) | 24 | 94 % |
| The Fool's Windmill by Fool on Hill (on 15. August 2022, 18:46) | 23 | 96 % |
| 15 Decibels by JeremyDover (on 28. August 2022, 03:00) | 25 | 91 % |
| Petroglyph by DadJokes (on 7. December 2022, 19:53) | 94 | 98 % |
| Diversity 2 by Migu (on 15. February 2023, 20:08) | 53 | 90 % |
| A Day for Chaos by DarthParadox (on 31. March 2023, 20:40) | 46 | 91 % |
| The Magic Column by marty_sears (on 26. April 2023, 10:26) | 75 | 96 % |
| Mods & Quads by marty_sears (on 14. October 2023, 00:11) | 88 | 93 % |
| Having A Goodlaugh by HalfBakedLunatic (on 3. December 2023, 02:38) | 49 | 91 % |
| One of these things (is not like the others) by Jrosas (on 4. April 2024, 13:44) | 24 | 93 % |
| Armada! Armada! by Black_Doom (on 25. May 2024, 15:15) | 20 | 91 % |
| Läufer Loop by Prof.Dori (on 23. September 2024, 12:17) | 41 | 99 % |
| Seer (Chaos Construction) by sfushidahardy (on 11. October 2024, 04:24) | 62 | 98 % |
