(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 | |
|---|---|---|---|
 | Tentative Scribblings (with sujoyku) by ChinStrap (on 14. March 2025, 16:22) | 62 |  97 % |
| Split Squad (with ChinStrap) by Fenners (on 11. June 2025, 23:10) | 34 | 94 % |
| Little Killer Thermo Sudoku by Willy Wonka (on 30. September 2020, 23:40) | 64 | 98 % |
| Lattice by DVFrank (on 3. September 2021, 16:38) | 39 | 98 % |
| Eye of the Storm by NickSchneider (on 26. January 2022, 04:31) | 34 | 97 % |
| Osaka (Killer) by Florian Wortmann (on 3. July 2022, 17:14) | 68 | 99 % |
| Slinningsbålet by Xenonetix (on 7. February 2023, 01:01) | 32 | 93 % |
| Quilt by mnasti2 (on 17. May 2023, 14:45) | 69 | 96 % |
| Houses of the Holy (arrows) by Godrick (on 26. July 2023, 18:46) | 32 | 98 % |
| Rank Up 09 - Schrödinger by ThePedallingPianist (on 26. July 2024, 02:17) | 36 | 95 % |
| Throuple Island by Belamis (on 26. October 2024, 21:23) | 36 | 92 % |
| i can't stop thinking about waffles by aqjhs (on 27. March 2025, 06:07) | 33 | 92 % |
| Chaos Construction: Thermo Knots by Myxo (on 18. January 2025, 12:31) | 144 | 97 % |
| Modscrapers by grkles (on 15. November 2021, 04:28) | 34 | 99 % |
| Primesweeper: Strongbox by grkles (on 3. December 2021, 18:42) | 33 | 97 % |
| Dyslexic Arrows by Migu (on 6. June 2023, 00:34) | 34 | 91 % |
| X-clusi-V-ty by tesseralis (on 12. August 2023, 02:26) | 33 | 95 % |
| Schrödinger 202: Atomic Structure by ViKingPrime (on 24. September 2023, 21:00) | 33 | 97 % |
| TPC Sawgrass (Nurikabe/Loop 12 Hybrid) by MaizeGator (on 16. March 2025, 17:02) | 37 | 100 % |
| Jackson High by fjam (on 16. November 2022, 18:52) | 36 | 93 % |
