(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 | |
|---|---|---|---|
 | Heyawake Chaos by mellowrobinson (on 27. January 2026, 07:31) | 22 |  99 % |
| My Big, Hard, Throbbing Kakuro by clover (on 30. January 2026, 00:27) | 28 | 98 % |
| Red Lodge, Montana (Sudoku-Creek Hybrid) by mathpesto (on 24. December 2023, 17:10) | 121 | 97 % |
| Assembly by juggler (on 7. December 2025, 08:41) | 122 | 98 % |
| Inner Square Diagonals by Phistomefel (on 12. August 2024, 13:31) | 96 | 97 % |
| Leakage by Testarossa (on 21. January 2023, 20:10) | 84 | 100 % |
| Full Rank Sandwich by RockyRoer (on 5. June 2022, 03:22) | 59 | 100 % |
| Cave Akari by Mark Sweep (on 4. December 2020, 10:00) | 58 | 99 % |
| DIY Arrows by sophmayrob (on 15. June 2023, 07:59) | 54 | 98 % |
| Cuitláhuac by aqjhs (on 20. April 2025, 04:20) | 51 | 96 % |
| How Bizarre by Nahileon (on 5. June 2024, 14:42) | 45 | 96 % |
| Chalice (Anti-knight, Thermo) by emmettcito (on 23. April 2021, 19:21) | 48 | 93 % |
| Ocean by kolot (on 15. August 2021, 07:58) | 40 | 98 % |
| Nineteen by FryTheGuy (on 29. November 2021, 16:51) | 41 | 94 % |
| Ballast by wooferzfg (on 29. July 2023, 23:07) | 36 | 97 % |
| Whispering Tapa-logy by yttrio (on 19. January 2024, 22:10) | 36 | 97 % |
| Magnetplatten-Tausch-ABCtje (2) by ibag (on 27. March 2013, 00:00) | 32 | 98 % |
| Galaxy Lunchboxes by Undar_Beyond (on 21. June 2020, 13:57) | 40 | 97 % |
| SC24 - Region Sum Lines 2 by kuraban (on 22. November 2022, 19:33) | 37 | 93 % |
| E ∩ tropy (Killer, Entropy Theme) by Crusader175 (on 20. May 2023, 16:00) | 38 | 94 % |
