(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 | |
|---|---|---|---|
 | Nine Bent Arrows, One Straight by rmahus (on 14. March 2023, 10:00) | 48 |  97 % |
| Parity Party XXVIII, "Party Mirror" by glum_hippo (on 30. March 2023, 13:57) | 34 | 94 % |
| BRIEFUMSCHLAG - Buchstabenrätsel / Letter Puzzle by DocLogic (on 17. December 2023, 14:21) | 30 | 95 % |
| Heat Intensity by Calesch (on 13. August 2024, 05:09) | 23 | 94 % |
| Perfect by Jobo (on 9. November 2024, 00:28) | 62 | 92 % |
| Bicentenary by NicoD (on 5. September 2025, 05:30) | 26 | 92 % |
| The Rumbling by Justalilguy (on 26. September 2025, 14:06) | 37 | 92 % |
| Killer Gossip by Kaktuslav (on 6. October 2025, 08:00) | 43 | 94 % |
| Pincer Movements by arbitrary (on 17. May 2024, 00:49) | 83 | 94 % |
| (+10)-Yang by Kaktuslav (on 30. September 2025, 08:00) | 173 | 96 % |
| Jubiläumsrätsel - 2 Jahre Rätselportal by Richard (on 1. November 2010, 00:00) | 71 | 94 % |
| Shiny (Cave; Suguru/Fillomino) by MaizeGator (on 27. August 2024, 04:34) | 64 | 96 % |
| Hurray for René by Richard (on 9. January 2021, 00:00) | 54 | 96 % |
| High Way by Mujika (on 6. January 2024, 17:47) | 62 | 93 % |
| Twin Killer II by Richard (on 25. March 2009, 10:19) | 154 | 95 % |
| Little (Killer)^2 by Lisztes (on 30. December 2020, 01:00) | 37 | 94 % |
| Gossip Circle by mormagli (on 5. June 2022, 23:52) | 45 | 98 % |
| Malfunctioning Modifier Mystery by mnasti2 (on 14. August 2022, 15:01) | 35 | 95 % |
| Sequence Boxes by Cane_Puzzles (on 1. January 2023, 07:48) | 40 | 93 % |
| Tens(e) Transitions by olima (on 21. May 2024, 10:00) | 42 | 96 % |
