(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 | |
|---|---|---|---|
 | DSM Qualitraining 2021: Average Arrows by Realshaggy (on 17. January 2021, 06:00) | 40 |  97 % |
| Anti-King Arrow X Killer by ICHTUES (on 21. March 2021, 06:00) | 28 | 94 % |
| Battle With The Archers 4: Dual Crossbows by Playmaker6174 (on 23. June 2021, 07:57) | 57 | 95 % |
| Did someone say Mondrian? (Killer) by Chilly (on 2. August 2021, 23:27) | 16 | 91 % |
| Renban/Skyscrapers Sudoku by MagnusJosefsson (on 11. September 2021, 13:47) | 27 | 95 % |
| Killer Sudoku by PotatoHead21 (on 12. December 2021, 08:36) | 58 | 93 % |
| Pared Down (Parity Arrow) by tallcat (on 22. January 2022, 22:44) | 55 | 92 % |
| SiXteen by djorr (on 22. April 2022, 14:00) | 14 | 95 % |
| Thermos and Cages by Jeet Sampat (on 7. March 2022, 04:31) | 33 | 97 % |
| Knight Sweats by SlowLarry (on 21. August 2022, 16:26) | 35 | 94 % |
| Chaotic Sums by kuraban (on 26. October 2022, 19:34) | 82 | 97 % |
| Falling Arrows by antiknight (on 24. December 2022, 02:44) | 90 | 94 % |
| Lost In A Cave by Scojo (on 31. March 2023, 01:35) | 14 | 98 % |
| Known Unknowns by Scruffamudda (on 6. June 2023, 10:29) | 17 | 93 % |
| Checkered (Psycho Look-and-Say/German whispers/Renban) by dumediat (on 29. August 2023, 16:54) | 13 | 95 % |
| Dolittle's Revenge by Die Hard (on 12. October 2023, 12:19) | 14 | 91 % |
| Hide and Xeek by HalfBakedLunatic (on 24. December 2023, 03:32) | 47 | 93 % |
| Elements of Trilogies by Kafkapharnaum (on 29. February 2024, 05:39) | 13 | 100 % |
| The Juggler [Modular Lines, Kropki Pairs] by Malrog (on 13. March 2024, 13:03) | 27 | 94 % |
| Three's a Crowd by XeonRisq (on 17. July 2024, 02:00) | 11 | 91 % |
