(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 | |
|---|---|---|---|
 | U-Bahn with Empty Clues (Toroidal) (asst. the_cogito) by KNT (on 5. April 2025, 23:23) | 30 |  97 % |
| Cage Play 1: Kropkiller by HalfBakedLunatic (on 7. April 2025, 06:31) | 34 | 93 % |
| ZEITUNG - Buchstabenrätsel / Letter Puzzle by DocLogic (on 6. April 2025, 20:47) | 23 | 95 % |
| Setting The Hours Aside by MathGuy_12 (on 13. April 2025, 23:58) | 13 | 98 % |
| Amoeba Festival (Yajilin + Nawabari) by sfushidahardy (on 27. April 2025, 19:33) | 27 | 94 % |
| Celtic Path (Yin Yang, Path & Shading Arrows) (with AnalyticalNinja) by 99%Sneaky (on 4. May 2025, 21:36) | 22 | 92 % |
| Going Dotty And Loopy by ralphwaldo1 (on 27. May 2025, 00:53) | 14 | 90 % |
| NYPD by phil_the (on 29. May 2025, 13:01) | 39 | 99 % |
| Iterations (Pentopia Yajilin Construction) by sfushidahardy (on 28. June 2025, 08:09) | 50 | 100 % |
| Magic Matryoshka by Nahileon (on 9. July 2025, 17:18) | 51 | 97 % |
| how many entropea puzzles can they be? by aqjhs (on 14. July 2025, 02:13) | 35 | 96 % |
| Anti-Arrow I by Andrewsarchus (on 5. August 2025, 04:43) | 26 | 95 % |
| Geometry Exam #5 by Blashyrkh (on 9. August 2025, 19:45) | 105 | 97 % |
| The End of Your Rope by MathGuy_12 (on 10. August 2025, 16:15) | 13 | 91 % |
| Octagon by Jolly Rogers (on 31. August 2025, 18:18) | 43 | 95 % |
| Doppeldinger by ThePedallingPianist (on 19. September 2025, 19:30) | 13 | 90 % |
| Reciprocals by Kaktuslav (on 23. September 2025, 08:00) | 41 | 95 % |
| Segregated neighborhood by NicoD (on 29. September 2025, 05:30) | 17 | 90 % |
| You Asked For It by Md88keys (on 24. October 2025, 21:18) | 20 | 94 % |
| Three-way Balance by Kutsumi Hane (on 20. November 2025, 09:52) | 14 | 95 % |
