(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 | |
|---|---|---|---|
 | Vogelscheuche by Myxo (on 21. July 2024, 13:02) | 83 |  93 % |
| Deconstructed Fog by DiMono (on 11. September 2024, 19:24) | 45 | 94 % |
| Shade Your Own Puzzle: Fillomino vs Cave ft. Parity #1 (8x8) by Playmaker6174 (on 19. October 2024, 10:30) | 44 | 97 % |
| Sudoku Variants Series (278) - Position Sums Sudoku by Richard (on 22. July 2020, 00:00) | 103 | 99 % |
| Quagmire by jwsinclair (on 7. February 2023, 20:48) | 63 | 97 % |
| 2024 by starwarigami (on 31. December 2023, 00:00) | 63 | 96 % |
| Die Kryptos - S04E06: Kariertes Fillomino (Variante) by tuace (on 21. January 2020, 08:06) | 32 | 98 % |
| Find the Triplet by Mesmer (on 24. February 2020, 23:14) | 33 | 91 % |
| No Idea by rysmyth240 (on 11. April 2021, 17:13) | 78 | 93 % |
| Killed Bulbs and Killer Cages - Thermo(?) Killer Sudoku by Cane_Puzzles (on 18. April 2021, 13:30) | 38 | 96 % |
| Corner Piece by pieguy (on 26. February 2023, 21:07) | 33 | 94 % |
| Crime of Passion by lmdemasi (on 24. December 2023, 12:13) | 36 | 92 % |
| X Marks The Spot by Djmelee3000 (on 11. September 2020, 08:51) | 46 | 97 % |
| Revenge of Triad by Tyrgannus (on 18. September 2021, 06:57) | 41 | 97 % |
| Overkill by Jay Dyer (on 24. August 2022, 17:19) | 93 | 98 % |
| Line of Sight (9x9 Chaos Construction) by ONeill (on 22. October 2022, 02:01) | 51 | 99 % |
| U-Bahn (2) by KNT (on 15. April 2023, 06:02) | 49 | 99 % |
| Kropki Arrow Sandwich (Merry Christmas PhilTheHat!) by RockyRoer (on 22. January 2025, 15:01) | 43 | 93 % |
| 5 Years Portal Anniversary by Richard (on 1. November 2013, 12:02) | 94 | 98 % |
| Wichtel 2018 (8): Zahlenweihnachtsbaum by wichtel (on 24. December 2019, 12:08) | 31 | 96 % |
