(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 | |
|---|---|---|---|
 | Drawers by stephane.bura (on 5. May 2022, 18:45) | 16 |  98 % |
| Caged Heat by starwarigami (on 11. May 2022, 23:52) | 46 | 95 % |
| Galaga by tenaliraman (on 16. September 2022, 10:35) | 54 | 95 % |
| Fifth Element by XeonRisq (on 18. January 2023, 18:00) | 27 | 94 % |
| Echo Chamber by ndsurgenor (on 26. February 2023, 11:00) | 18 | 93 % |
| Challah by pieguy (on 10. November 2023, 03:30) | 40 | 90 % |
| BRIEFUMSCHLAG - Buchstabenrätsel / Letter Puzzle by DocLogic (on 17. December 2023, 14:21) | 24 | 94 % |
| Heat Stroke by juggler (on 17. January 2024, 01:32) | 61 | 94 % |
| Indirect Communication by blackjackfitz (on 19. February 2024, 15:08) | 25 | 96 % |
| Quantum Moon by heliopolix (on 2. June 2024, 00:00) | 14 | 90 % |
| Nurikabe Kurotto by Paletron (on 12. June 2024, 10:57) | 23 | 96 % |
| Sett Theory by marty_sears (on 11. August 2024, 20:47) | 70 | 97 % |
| Chaos Construction: Vision by KNT (on 31. March 2022, 00:50) | 208 | 98 % |
| Same Difference by marty_sears (on 9. October 2023, 13:18) | 81 | 97 % |
| Raw Spaghetti (equal sums lines sudoku) by Aspartagcus (on 23. June 2022, 23:19) | 69 | 97 % |
| Point the Silent Path by Niverio (on 18. June 2024, 09:25) | 56 | 96 % |
| Six 6x6-sudoku pack by Qodec (on 26. June 2021, 23:10) | 51 | 98 % |
| Yspot (Anti-V Between; Collab w/ Zetamath) by tallcat (on 23. February 2023, 19:50) | 49 | 92 % |
| whisperwhisperwhisperwhisper by twototenth (on 18. January 2022, 08:00) | 83 | 94 % |
| Stolen Numerals XVII by NurglesGift (on 15. July 2024, 16:24) | 95 | 97 % |
