(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 | |
|---|---|---|---|
 | The Knights of Ni! Finally Get Their Shrubbery by HalfBakedLunatic (on 12. January 2024, 17:06) | 50 |  92 % |
| TEQUILA - Buchstabenrätsel / Letter Puzzle by DocLogic (on 13. January 2024, 15:46) | 32 | 98 % |
| Double Negative by JeremyDover (on 17. January 2024, 21:12) | 30 | 100 % |
| Etch-A-Sketch by ThePedallingPianist (on 24. January 2024, 01:47) | 30 | 93 % |
| Chaos Theory by Cipher Savant (on 24. January 2024, 16:18) | 13 | 90 % |
| Enigmatic Entropic Snake by starwarigami (on 31. January 2024, 00:00) | 32 | 91 % |
| Anti-7 Arrows by ademjaz (on 31. January 2024, 09:25) | 45 | 95 % |
| Mad Marty's Moneymaker by heliopolix (on 8. February 2024, 20:44) | 17 | 90 % |
| Kropki Fillomino 2 by SudokuExplorer (on 20. February 2024, 20:00) | 31 | 97 % |
| Im Obstgarten (Sudoku) by glum_hippo (on 7. March 2024, 20:17) | 46 | 97 % |
| Foggy Looping Chaos by Paletron (on 16. March 2024, 11:27) | 38 | 90 % |
| Pacify by SamuPiano (on 26. March 2024, 17:00) | 67 | 97 % |
| Wavecatcher by Nordy (on 14. April 2024, 09:00) | 29 | 95 % |
| Combinatorial tree by egubachu (on 16. April 2024, 11:09) | 31 | 91 % |
| Halving Loop by yttrio (on 19. April 2024, 14:46) | 41 | 96 % |
| Heyawake Country by mathpesto (on 26. April 2024, 15:39) | 46 | 97 % |
| Dip'n Dots by RaygunUltra (on 10. May 2024, 09:27) | 14 | 93 % |
| Squidshoku (Squishdoku, Octopus) by ThePedallingPianist (on 1. May 2024, 00:58) | 17 | 90 % |
| Sublime Primes by yanggang (on 10. May 2024, 20:41) | 20 | 90 % |
| Is V Greater Than, Less Than, or Equal to 5? (Revised) by HalfBakedLunatic (on 17. May 2024, 22:36) | 33 | 93 % |
