(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 | |
|---|---|---|---|
 | FROHE WEIHNACHT - Buchstabenrätsel / Letter Puzzle by DocLogic (on 14. December 2020, 16:30) | 36 |  96 % |
| Thermal Arrow Killer X by primovera (on 15. January 2021, 01:29) | 24 | 93 % |
| Diamond by SirWoezel (on 21. June 2021, 11:20) | 10 | 90 % |
| Battle With The Archers 19: War Games by Playmaker6174 (on 8. October 2021, 12:33) | 36 | 95 % |
| The Palindrome Loop by FlowJo (on 5. January 2022, 11:27) | 19 | 95 % |
| Loop Pentominous by Jay Dyer (on 7. March 2022, 21:43) | 43 | 96 % |
| Bisection by jsmirob (on 19. May 2022, 04:22) | 21 | 90 % |
| SkyWhispers by manushand (on 22. July 2022, 16:00) | 25 | 93 % |
| Floody Hekc by Malrog (on 30. July 2022, 01:38) | 16 | 92 % |
| Winded Arrows (Irregular Sudoku) by Aaronomys (on 22. August 2022, 05:18) | 24 | 98 % |
| SET Equivalence Theory by tesseralis (on 5. September 2022, 00:21) | 17 | 98 % |
| Pinball Wizard by Blobz (on 28. November 2022, 16:00) | 25 | 94 % |
| Primordial Ooze by Kafkapharnaum (on 7. January 2023, 01:53) | 18 | 98 % |
| Mountain sandwich sudoku by Nylimb (on 12. February 2023, 23:01) | 16 | 97 % |
| Hybrid Star Battle Series (012) - Masyu by BenceJoful (on 26. March 2023, 16:31) | 31 | 94 % |
| Cross-cutting by Jagga (on 28. March 2023, 20:11) | 25 | 94 % |
| Dragon Ball Soup by meggen033 (on 18. May 2023, 08:10) | 26 | 93 % |
| Whispering Mask by josh_johnson (on 4. June 2023, 16:34) | 51 | 93 % |
| Cross-blunder by chameleon (on 29. June 2023, 23:24) | 11 | 95 % |
| Knight's Kropki by Scruffamudda (on 12. August 2023, 06:13) | 29 | 99 % |
