(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 | |
|---|---|---|---|
 | Japanese Sums #3: Combination by lerroyy (on 3. November 2023, 12:57) | 16 |  95 % |
| Deconstruct Your Sandwiches by Tacosian (on 3. December 2023, 00:24) | 26 | 95 % |
| Buttered Cat Paradox by Kafkapharnaum (on 5. January 2024, 19:50) | 14 | 100 % |
| Walls of Eternal Damnation (Secret Satan) by Agent (on 22. January 2024, 09:00) | 30 | 97 % |
| Japanese Japanese Sums Sums #2 by The Book Wyrm (on 12. March 2024, 21:51) | 27 | 99 % |
| Sorted Coral Subway by wooferzfg (on 3. August 2024, 08:23) | 15 | 100 % |
| Wichtels Rätselsommer 2024 (7): Die Sieben Brücken der Welt by wichtel (on 11. September 2024, 20:23) | 18 | 100 % |
| U-Bahn LITSO (Again) by the_cogito (on 19. November 2024, 19:57) | 14 | 100 % |
| Full Folding Frenzy by ThePedallingPianist (on 22. December 2024, 00:40) | 31 | 92 % |
| The Evil Ennead by heliopolix (on 4. February 2025, 21:53) | 17 | 100 % |
| Dueling Dragons by IcyFruit (on 13. March 2025, 14:33) | 48 | 90 % |
| Chaos Construction: Surround Sums by PixelPlucker (on 17. March 2025, 22:45) | 40 | 97 % |
| 4 Stones, 1 Bird (Lost and Found #8 - Finale) by .proxz14 (on 25. May 2025, 09:58) | 21 | 91 % |
| Tri-Colour Coaster #2 by ClashCode (on 11. June 2025, 04:56) | 15 | 90 % |
| The Devilish Double-Tripleblock by Las4one (on 24. June 2025, 11:08) | 15 | 96 % |
| Stationary Loop Deconstruction (1-9) by Playmaker6174 (on 20. July 2025, 22:00) | 38 | 99 % |
| Pandemonium by Andrewsarchus (on 23. July 2025, 13:45) | 31 | 98 % |
| Try-ominos Cave by damasosos92 (on 23. July 2025, 17:54) | 35 | 98 % |
| Liar Japanese Sums (Knapp Daneben) by Piatato (on 22. August 2025, 21:14) | 24 | 97 % |
| Full Full Rank Rank by The Book Wyrm (on 8. August 2025, 22:20) | 19 | 91 % |
