(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 | |
|---|---|---|---|
 | Home Run by Jobo (on 21. May 2024, 21:10) | 24 |  90 % |
| Snake Sweeper Redux by glum_hippo (on 3. August 2020, 13:26) | 11 | 90 % |
| Arrows X by emmettcito (on 7. February 2021, 20:47) | 15 | 90 % |
| X-Sums (Variant) by cdwg2000 (on 20. March 2021, 09:03) | 13 | 90 % |
| Circle of Fifths by Cephalo (on 28. April 2022, 19:40) | 38 | 95 % |
| Time to Color by EricRathbun (on 16. October 2022, 21:17) | 15 | 90 % |
| A Blind Killer by bodemeister (on 17. January 2023, 08:29) | 12 | 95 % |
| Battleship Lighthouse Hashikabe by Nell Gwyn (on 2. June 2024, 05:10) | 11 | 95 % |
| Anableps (Aquarium + Myopia) by sfushidahardy (on 17. February 2025, 17:38) | 11 | 100 % |
| Decapitated (Chaos Construction) by Black_Doom (on 14. January 2024, 18:48) | 79 | 97 % |
| Can You Count the Whispers? by Tobias Brixner (on 26. May 2024, 16:07) | 45 | 96 % |
| Cherry Picking (Arrow Sudoku) by Sktx (on 25. September 2022, 17:49) | 34 | 96 % |
| The Three Bears Sudoku by dance1211 (on 14. October 2020, 03:48) | 23 | 97 % |
| Portal Sum - Little Killer Sudoku by Playmaker6174 (on 22. April 2022, 16:46) | 19 | 96 % |
| Disturbed Balance by lepton (on 19. December 2022, 20:35) | 23 | 99 % |
| Filloku by mormagli (on 8. September 2023, 20:38) | 21 | 96 % |
| H-Bomb by Abdul the Killer (on 30. April 2024, 12:34) | 38 | 90 % |
| [TSL] Scenic Railroad by Myxo (on 23. December 2024, 09:24) | 21 | 100 % |
| Taurus (Arrow Killer) by tallcat (on 4. May 2021, 13:32) | 47 | 97 % |
| Call My Bluff (2 Truths, 1 Lie Sudoku) by tallcat (on 16. October 2023, 07:00) | 84 | 97 % |
