(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 | |
|---|---|---|---|
 | Dancing Arrows (Arrow Sudoku) by FryTheGuy (on 15. June 2021, 07:42) | 41 |  92 % |
| Parity Party XX, "Crescendo" by glum_hippo (on 19. June 2021, 01:06) | 31 | 99 % |
| Angel's Arrow by PotatoHead21 (on 4. July 2021, 03:52) | 20 | 97 % |
| Arrow City by PotatoHead21 (on 18. January 2022, 20:32) | 38 | 95 % |
| Fireworks and Firecrackers by Emphyrio (on 20. March 2022, 01:15) | 19 | 97 % |
| Whispering Arrows by antiknight (on 8. April 2022, 22:57) | 17 | 98 % |
| Nurikabe Sweeper Sudoku by KNT (on 23. May 2022, 01:37) | 51 | 100 % |
| Activated Japanese Sums by RockyRoer (on 12. November 2022, 13:36) | 13 | 94 % |
| SneX by JayForty (on 17. March 2023, 20:28) | 17 | 90 % |
| Trash Arrow Sudoku by LittleNightmaresLady (on 18. June 2023, 20:17) | 23 | 93 % |
| Excavation (arrows) by ZeroUltra (on 10. August 2023, 21:15) | 16 | 92 % |
| Zadra by IcyFruit (on 14. March 2024, 15:55) | 61 | 95 % |
| Martytram Snake by Prof.Dori (on 6. June 2024, 15:38) | 16 | 93 % |
| Pathfinder by vitaminz (on 10. June 2024, 20:50) | 14 | 98 % |
| Mellow Mancala by heliopolix (on 13. July 2024, 00:00) | 12 | 92 % |
| The Equalizer by Playmaker6174 (on 11. September 2024, 10:00) | 17 | 92 % |
| Windmill by lerroyy (on 13. March 2022, 20:11) | 72 | 99 % |
| A Mathematical Phenomenon by Xenonetix (on 4. September 2022, 22:22) | 89 | 100 % |
| Arrow Sudoku by abed hawila (on 17. February 2021, 21:51) | 70 | 97 % |
| Renban Dance by Qodec (on 20. May 2021, 18:27) | 39 | 96 % |
