(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 | |
|---|---|---|---|
 | The Song of the Serpent and the Wanderer - A tribute to Nordy by damasosos92 (on 17. July 2023, 03:40) | 64 |  94 % |
| Delirium (Chaos Construction) by heliopolix (on 25. October 2024, 18:14) | 48 | 99 % |
| Verzwicktes ABCtje by ibag (on 23. October 2011, 09:42) | 21 | 93 % |
| Wichtel 2021 (6): Flucht durch die Unterwelt by wichtel (on 24. September 2022, 02:21) | 18 | 99 % |
| LYLY (double arrows) by Samish (on 5. October 2022, 09:09) | 19 | 94 % |
| Taijitu (ft. KNT) by TotallyNormalCat (on 26. May 2022, 18:00) | 52 | 94 % |
| Crypto Japanese Cave with Three Extraterrestrials by KNT (on 21. February 2023, 04:18) | 32 | 100 % |
| The Graveyard Of Knapp Daneben by fjam (on 12. October 2024, 14:59) | 37 | 90 % |
| Zum Geburtstag by Uhu (on 5. March 2017, 10:24) | 41 | 99 % |
| Crypto Japanese Cave with Indexers by KNT (on 20. October 2022, 06:39) | 56 | 100 % |
| Couples by kolot (on 28. July 2021, 14:07) | 30 | 94 % |
| Chaos Construction: Border Sums by kolot (on 1. February 2022, 17:06) | 73 | 99 % |
| Spaceships by antiknight (on 20. June 2022, 16:39) | 15 | 95 % |
| Chaotic Serpents by jsmirob (on 20. June 2022, 19:26) | 15 | 95 % |
| Double? Or Nothing? [Doublers, Killer, Zeroers] by 3good5you (on 6. August 2023, 06:07) | 13 | 93 % |
| Nabner Doubledeal by Jay Dyer (on 20. September 2023, 13:35) | 52 | 97 % |
| The Method of Differences by DarthParadox (on 16. December 2023, 21:06) | 28 | 95 % |
| Liar Japanese Sums #8 - Ciphered Deconstruction by Niverio (on 4. June 2024, 08:48) | 43 | 100 % |
| A Map to Distant Lands by The Book Wyrm (on 23. August 2024, 18:11) | 26 | 95 % |
| Dorlightfully Devilish by ThePedallingPianist (on 2. November 2024, 20:11) | 14 | 95 % |
