(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 | |
|---|---|---|---|
 | Going in Blind by antiknight (on 8. June 2023, 19:10) | 32 |  98 % |
| Parity Repellant by XeonRisq (on 24. January 2024, 17:00) | 12 | 95 % |
| The King's Archers by Lizzy01 (on 16. May 2024, 16:00) | 67 | 93 % |
| Separated Pairs by arbitrary (on 13. July 2024, 23:37) | 15 | 98 % |
| Golden Madness by Sfayne (on 4. February 2025, 15:31) | 12 | 91 % |
| Cassiopeia (Pentominous/Star Battle) by goodcity (on 21. February 2025, 12:12) | 27 | 97 % |
| This is how you live the Time War by pdyxs (on 27. February 2025, 05:55) | 12 | 100 % |
| MUSIK - großes Buchstabenrätsel / big letter puzzle by DocLogic (on 22. October 2025, 23:23) | 24 | 96 % |
| Cavernous Japanese Sum: Deconstruction (11x11) by Playmaker6174 (on 28. November 2025, 16:00) | 15 | 100 % |
| Crossroads 2: Attack of the Combs by JeffWajes (on 19. December 2025, 11:13) | 15 | 93 % |
| Foggy Banana Split by SamuPiano (on 24. April 2026, 15:44) | 34 | 95 % |
| Cross Purposes (Quad Sums Killer Anti-King) by tallcat (on 6. June 2022, 02:42) | 67 | 99 % |
| Ambiguous Arrows Sudoku by Jay Dyer (on 25. May 2022, 21:26) | 54 | 97 % |
| Battle With The Archers 27: Between Friends and Enemies (part 1) by Playmaker6174 (on 5. February 2022, 11:49) | 45 | 97 % |
| Blackjack by Blashyrkh (on 14. May 2023, 12:28) | 77 | 95 % |
| Emerald City by juggler (on 27. February 2025, 06:21) | 81 | 95 % |
| Rogue Knight by JnL (on 2. July 2022, 17:09) | 28 | 91 % |
| Numbered Cave Fillomino by Agent (on 27. December 2022, 09:00) | 56 | 99 % |
| Ravine by Jay Dyer (on 21. January 2023, 23:55) | 89 | 95 % |
| First Burn by dennischen (on 4. May 2023, 08:22) | 32 | 95 % |
