(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 | |
|---|---|---|---|
 | HBD Niverio by twototenth (on 27. December 2022, 08:00) | 74 |  96 % |
| Snakomino [Level #1] by Christounet (on 1. February 2023, 22:17) | 62 | 100 % |
| Japanese Sums #1: Vanilla by Myxo (on 19. April 2023, 16:00) | 96 | 98 % |
| The Magic Column by marty_sears (on 26. April 2023, 10:26) | 63 | 96 % |
| Long Island [Shimaguni Fillomino] by MicroStudy (on 5. May 2023, 01:11) | 56 | 97 % |
| Partition [Little Killer, Yin-Yang Sight Arrows] by 3good5you (on 27. July 2023, 08:56) | 17 | 95 % |
| Snails by Twan2797 (on 23. August 2023, 16:35) | 38 | 94 % |
| XY-Differences Fillomino 2 by glum_hippo (on 30. August 2023, 19:51) | 38 | 92 % |
| Masyudoku [Region Sum Line, Masyu] by 3good5you (on 1. September 2023, 01:31) | 18 | 98 % |
| Companies (Skyscraper, Product Ltd) by Crusader175 (on 5. December 2023, 14:00) | 28 | 94 % |
| German Summing Doppelganger by feethy (on 3. March 2024, 18:40) | 15 | 100 % |
| Happy Birthday to Naomi by Fool on Hill (on 31. March 2024, 13:51) | 28 | 95 % |
| Sprawling by Xenonetix (on 14. April 2024, 01:01) | 41 | 96 % |
| Some Zippers Somedoku by blackjackfitz (on 16. April 2024, 01:59) | 63 | 97 % |
| Chaos Construction: FroZen Pentominoes by oklux (on 25. January 2025, 21:14) | 31 | 96 % |
| Number Snax Doubled by Oddlyeven (on 29. March 2025, 00:51) | 44 | 96 % |
| Walking around town (Deconstruction) by Oripy (on 12. May 2025, 12:00) | 45 | 96 % |
| Know Your Rank by Kaktuslav (on 18. October 2025, 08:00) | 33 | 90 % |
| Copycat Confusion by Phistomefel (on 19. August 2024, 18:03) | 113 | 95 % |
| Nine Lives by ThePedallingPianist (on 12. May 2025, 14:40) | 126 | 96 % |
