(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 | |
|---|---|---|---|
 | Stingray by mormagli (on 25. September 2022, 04:47) | 20 |  95 % |
| Which is Which, Again? by DJV (on 22. February 2023, 05:02) | 43 | 94 % |
| Target Acquired by Scojo (on 28. January 2024, 22:54) | 16 | 98 % |
| AntiknighthginkitnA by tribution (on 4. November 2022, 13:58) | 81 | 92 % |
| Regiscissors by Tyrgannus (on 16. July 2021, 00:51) | 47 | 96 % |
| Entanglement by Jay Dyer (on 25. July 2024, 16:15) | 215 | 97 % |
| Empty Cages by clover (on 13. August 2020, 21:21) | 34 | 97 % |
| Two-Doku Xtreme by Stavros96 (on 3. October 2020, 03:53) | 16 | 98 % |
| Bicycle 2 [extended XV - virtual sudoku] by SimplePurpleFrog (on 2. October 2021, 05:04) | 17 | 94 % |
| Zero Ambiguity by XeonRisq (on 17. July 2022, 01:00) | 14 | 94 % |
| Game, set and no three in the corner by Fool on Hill (on 18. August 2022, 13:00) | 16 | 92 % |
| Sum Like it Dot (Sum Dots, Killer) by Chilly (on 3. October 2022, 19:07) | 14 | 98 % |
| Pinball Wizard by Blobz (on 28. November 2022, 16:00) | 16 | 90 % |
| Beehive [Hexagonal Akari RGB] by wisty (on 27. December 2023, 02:16) | 15 | 96 % |
| Beauty Mark by zetamath (on 24. August 2023, 21:36) | 148 | 94 % |
| Looping Chaos by Paletron (on 12. March 2024, 20:44) | 59 | 95 % |
| A Meandering Path by 10feet (on 6. July 2021, 06:11) | 31 | 93 % |
| Krazy Kropki Killer by vidarino (on 19. November 2021, 13:35) | 28 | 93 % |
| KUBA - Buchstabenrätsel by DocLogic (on 3. January 2020, 21:40) | 44 | 94 % |
| Rainbow Bricks by tsc (on 2. September 2022, 23:14) | 66 | 95 % |
