(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 | |
|---|---|---|---|
 | Propeller by Scojo (on 30. April 2024, 10:53) | 15 |  94 % |
| Demiparure by mormagli (on 15. June 2024, 17:28) | 28 | 94 % |
| Double-wrapped X-sums by sanabas (on 19. July 2024, 04:58) | 14 | 92 % |
| Gravity Wells by Tobias Brixner (on 27. October 2024, 10:00) | 13 | 92 % |
| Shade Your Own Puzzle: Fillomino vs Cave ft. Parity #1 (8x8) by Playmaker6174 (on 19. October 2024, 10:30) | 53 | 97 % |
| Vampire Kingdoms by Sotehr (on 21. October 2024, 10:00) | 14 | 92 % |
| Kyushu by AFrayedKnot (on 9. November 2024, 07:52) | 65 | 99 % |
| Triad by Andrewsarchus (on 22. December 2024, 15:18) | 18 | 94 % |
| Relationship Status: It's Complicated by 99%Sneaky (on 17. January 2025, 16:25) | 56 | 94 % |
| Skystaplers by ChinStrap (on 1. July 2025, 15:59) | 54 | 98 % |
| Infantapaulting Hypothesis (Slingshot Nurikabe) by sfushidahardy (on 17. August 2025, 01:47) | 41 | 100 % |
| Yajilin / Knapp Daneben Yajilin Permaculture by SamuPiano (on 28. August 2025, 15:44) | 30 | 98 % |
| Big ol' arrow (deconstruction) by graggle (on 13. September 2025, 11:00) | 22 | 94 % |
| Brasero by NicoD (on 23. September 2025, 05:30) | 31 | 92 % |
| Jigsaw by Kaktuslav (on 11. October 2025, 08:00) | 44 | 94 % |
| Chaotic Party Pack by Kafkapharnaum (on 2. January 2026, 05:18) | 24 | 100 % |
| Wormholes (Chaos Construction) by kingoffries (on 28. May 2025, 18:27) | 134 | 97 % |
| Dustpan (Disjoint parity sweeper sudoku) by Qodec (on 23. February 2023, 13:00) | 124 | 97 % |
| Undeca Error (Killer, Anti-Knight) by Chilly (on 5. September 2022, 19:28) | 95 | 96 % |
| Binary star by NicoD (on 9. April 2025, 05:47) | 94 | 97 % |
