(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 | |
|---|---|---|---|
 | Productivity by juggler (on 19. December 2024, 20:34) | 34 |  94 % |
| Tenable by jwsinclair (on 20. June 2025, 21:59) | 35 | 95 % |
| Zodiac-Killer VI : Virgo by Eisbär (on 8. September 2011, 23:56) | 62 | 96 % |
| Irregular Miracle by emmettcito (on 12. August 2020, 01:56) | 39 | 91 % |
| The Miraculous Vault Construct by Xenonetix (on 23. March 2022, 13:15) | 30 | 99 % |
| The 8th Room by antiknight (on 24. July 2022, 22:50) | 36 | 95 % |
| Poisson Ratio by cam (on 23. December 2022, 21:35) | 34 | 94 % |
| Metroid by Kafkapharnaum (on 30. December 2022, 17:24) | 32 | 99 % |
| Mexican Train by ViKingPrime (on 9. May 2023, 14:00) | 33 | 99 % |
| Connect the Dots by Sabrar (on 24. June 2023, 11:15) | 40 | 90 % |
| Build Your Own Hitlines by marty_sears (on 16. December 2025, 13:59) | 188 | 97 % |
| Roller Coaster mit Extras 23 by Uhu (on 27. August 2021, 22:18) | 31 | 99 % |
| Battle With The Archers - The Lost Puzzle: Partition by Playmaker6174 (on 29. January 2022, 18:05) | 34 | 98 % |
| Battle With The Archers 30: Silent Threat II - Hidden Plan by Playmaker6174 (on 1. April 2022, 12:21) | 34 | 96 % |
| Region Sums Sandwich by RockyRoer (on 9. April 2022, 13:56) | 33 | 95 % |
| Lines And Circles by Jeet Sampat (on 8. April 2023, 13:18) | 31 | 93 % |
| Toasted Sandwich (Sums next to 1 and 9 sudoku) by Qodec (on 31. May 2023, 14:00) | 35 | 95 % |
| Runic Chaos by Sprechta (on 8. August 2023, 20:13) | 30 | 96 % |
| Webstuhl by GemmaOane (on 14. September 2023, 21:35) | 43 | 90 % |
| 2024 con un drum (Sudoku) by glum_hippo (on 5. January 2024, 17:19) | 32 | 93 % |
