(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 | |
|---|---|---|---|
 | Garden Fences by antiknight (on 24. June 2022, 01:44) | 29 |  92 % |
| Feudalism (No-touch region sum lines sudoku) by Qodec (on 3. March 2023, 21:26) | 51 | 97 % |
| This One Goes To Twelve by Blashyrkh (on 22. March 2023, 22:43) | 27 | 93 % |
| Intersections by Xenonetix (on 22. August 2023, 23:23) | 43 | 91 % |
| ⬯⬮⬯ Entropic-Sequence-Loop ⬮⬯⬮ (Easter Edition) by ElChiglia (on 30. March 2024, 07:15) | 24 | 92 % |
| Modern Art (Easter Special Edition) by Playmaker6174 (on 1. April 2024, 07:00) | 46 | 97 % |
| The Edge of Reason by Abdul the Killer (on 7. May 2024, 12:34) | 25 | 93 % |
| Endleofan by NicoD (on 7. June 2025, 05:30) | 83 | 96 % |
| Starry starry grid - [BYO Yajilin] by damasosos92 (on 6. October 2025, 04:17) | 24 | 90 % |
| Sunblock by Kaktuslav (on 30. January 2026, 08:00) | 186 | 98 % |
| Stolen Numerals XVII-5 by NurglesGift (on 16. January 2025, 16:48) | 89 | 94 % |
| Only One Possible Solution Exists by Md88keys (on 4. September 2025, 04:51) | 86 | 94 % |
| Cage Scraper by glum_hippo (on 24. January 2021, 06:00) | 50 | 97 % |
| Double-Digit-Thermo I "The Tree" by Garford (on 23. January 2021, 19:04) | 55 | 96 % |
| In the Zoo by Qodec (on 21. February 2021, 19:50) | 53 | 90 % |
| Regional Skyscrapers Fillomino by Agent (on 25. October 2022, 09:00) | 39 | 100 % |
| Thorny issues [German Whisper Deconstruction] by Christounet (on 17. February 2023, 23:36) | 93 | 97 % |
| Slangen (ft. Dorlir) by Nordy (on 10. July 2024, 06:28) | 45 | 99 % |
| Convergence by dawsonjones2020 (on 13. September 2024, 16:23) | 49 | 97 % |
| Recess by oskode (on 9. January 2026, 10:05) | 48 | 91 % |
