(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 | |
|---|---|---|---|
 | Entropic Tiles by crispy16 (on 3. September 2022, 22:58) | 27 |  94 % |
| 3 Bags Full by panthchesh (on 30. January 2023, 02:17) | 25 | 93 % |
| Liar Japanese Sums #4 - Ciphered Yin Yang by Niverio (on 1. February 2023, 11:22) | 53 | 99 % |
| The Magic Column by marty_sears (on 26. April 2023, 10:26) | 66 | 96 % |
| Rockets by igniteice (on 8. December 2023, 16:29) | 24 | 90 % |
| Whimsical Whisper Snake by starwarigami (on 27. January 2024, 00:09) | 41 | 100 % |
| Celebrating 100 by sujoyku (on 11. April 2024, 20:00) | 20 | 92 % |
| Ambiguous Slitherlink by Agent (on 28. April 2024, 09:00) | 59 | 98 % |
| A View to a Kill by DadJokes (on 30. April 2024, 22:37) | 25 | 93 % |
| The Edge of Reason by Abdul the Killer (on 7. May 2024, 12:34) | 23 | 93 % |
| Bittersweet Candies 4 - A (Mostly) Regular 6x6 Sudoku Pack (reworked) by Playmaker6174 (on 22. May 2024, 01:30) | 20 | 98 % |
| Loopy Whisper 'Wich by yttrio (on 24. May 2024, 21:47) | 40 | 96 % |
| Whispering Negativity by yttrio (on 29. June 2024, 01:10) | 34 | 93 % |
| Foggy Pea-losophy by SamuPiano (on 2. November 2024, 15:44) | 133 | 97 % |
| please, can we keep him!? by aqjhs (on 22. May 2025, 08:43) | 23 | 97 % |
| Sidereal nebulae by NicoD (on 18. July 2025, 05:30) | 25 | 91 % |
| Mineswee-Pea-Er (Split Peas/Yin Yang) by damo_89 (on 11. August 2025, 19:52) | 69 | 95 % |
| Counting Thermos by Scojo (on 17. December 2023, 21:16) | 127 | 97 % |
| YZ - XV by Scruffamudda (on 16. May 2023, 03:02) | 75 | 95 % |
| Terracotta Kids (Anti-Knight, German Whisper, Renban, Kropki) by juddimal (on 2. August 2025, 06:14) | 88 | 95 % |
