(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 | |
|---|---|---|---|
 | Enigmatic Entropic Snake by starwarigami (on 31. January 2024, 00:00) | 32 |  91 % |
| 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) | 30 | 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) | 37 | 90 % |
| Pacify by SamuPiano (on 26. March 2024, 17:00) | 65 | 97 % |
| Wavecatcher by Nordy (on 14. April 2024, 09:00) | 28 | 95 % |
| Combinatorial tree by egubachu (on 16. April 2024, 11:09) | 31 | 91 % |
| Halving Loop by yttrio (on 19. April 2024, 14:46) | 37 | 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) | 16 | 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 % |
| The Order by zetamath (on 18. May 2024, 18:45) | 66 | 95 % |
| Four-Box Fillominoku by Bert (on 21. May 2024, 17:09) | 19 | 90 % |
| Energized Pylon by heliopolix (on 1. June 2024, 00:00) | 14 | 93 % |
| More Piles of 15 by Cane_Puzzles (on 31. May 2024, 19:15) | 50 | 95 % |
| LM-Übungsrätsel: Matchmaker by CJK (on 9. June 2024, 17:21) | 25 | 97 % |
| Overstuffed by Oddlyeven (on 19. June 2024, 00:43) | 29 | 96 % |
