(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 | |
|---|---|---|---|
 | [TSL][S1T2] Chaotic Journey: Is this .... ? by yttrio (on 28. December 2024, 02:00) | 25 |  96 % |
| Little Nuts by Qodec (on 12. May 2021, 12:55) | 41 | 96 % |
| Limitless Potential #1: Zero to Infinity by Playmaker6174 (on 23. April 2023, 09:53) | 39 | 98 % |
| Apsidal Precession (Black Hole) by gdc (on 14. October 2025, 04:11) | 42 | 92 % |
| Thou Shalt Pass by Wuschel (on 3. February 2025, 09:39) | 55 | 98 % |
| XV*Magic 7 by NurglesGift (on 10. January 2025, 23:18) | 86 | 96 % |
| Disjoint Whispers by abed hawila (on 5. October 2021, 10:47) | 15 | 94 % |
| Tapa Mashup with Clones by Mark Sweep (on 25. February 2022, 10:00) | 35 | 98 % |
| Bounce by zetamath (on 25. April 2022, 16:17) | 54 | 99 % |
| Killer Sudomino (Killer Sudoku+Fillomino Hybrid) by AnalyticalNinja (on 31. October 2022, 14:08) | 48 | 98 % |
| A New Secret by blackjackfitz (on 6. February 2023, 19:05) | 15 | 98 % |
| Amaterasu [Thermo Sudoku] by wisty (on 27. March 2023, 10:15) | 33 | 90 % |
| Little Killer Irrwisch Sudoku by clover (on 23. December 2023, 15:53) | 15 | 92 % |
| Overdose by XeonRisq (on 20. February 2024, 23:00) | 29 | 91 % |
| Nuts and Bolts the Sequel: Mowing the Lawn by KMD (on 26. March 2024, 00:13) | 15 | 98 % |
| Slow Snake Somedoku by blackjackfitz (on 11. July 2024, 05:25) | 37 | 96 % |
| polyline polyglot by aqjhs (on 3. March 2025, 17:40) | 13 | 90 % |
| Impossible Germany by Neokart (on 28. October 2024, 02:41) | 31 | 96 % |
| Reciproci-Pea by vitaminz (on 11. July 2025, 15:43) | 17 | 94 % |
| Forbidden Desert (Pathfinding) by damo_89 (on 11. September 2025, 23:34) | 16 | 96 % |
