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 | |
---|---|---|---|
![]() | 10-in-9 calcudoku #2 by Nylimb (on 14. March 2020, 14:49) | 32 | ![]() 97 % |
![]() | Phistomefel-Tribute-Thermo-Sudoku by olima (on 19. July 2020, 03:39) | 39 | ![]() 92 % |
![]() | Trail of Arrows by SudokuExplorer (on 25. January 2022, 18:30) | 62 | ![]() 97 % |
![]() | 15x15 Standard Pentominous by stefliew (on 28. March 2021, 08:46) | 36 | ![]() 99 % |
![]() | Toothbrushes by krangune (on 8. May 2022, 12:49) | 34 | ![]() 97 % |
![]() | Antiking Kaleidoscope (Stitched Rainbow VI) by thoughtbyte (on 7. August 2022, 03:16) | 37 | ![]() 96 % |
![]() | Double Decker Sandwiches by RockyRoer (on 19. November 2022, 12:58) | 37 | ![]() 94 % |
![]() | Adulthood by GarlicBredFries (on 5. March 2023, 05:42) | 34 | ![]() 95 % |
![]() | Ghost Cages by juggler (on 19. July 2024, 03:38) | 85 | ![]() 94 % |
![]() | Kill Between The Lines by Djmelee3000 (on 29. September 2020, 02:39) | 43 | ![]() 94 % |
![]() | Thermo X Sudoku by Phistomefel (on 2. December 2020, 20:08) | 145 | ![]() 93 % |
![]() | Parity Clockwork by Playmaker6174 (on 20. January 2022, 20:24) | 45 | ![]() 96 % |
![]() | Froschteich by Myxo (on 25. August 2024, 15:01) | 45 | ![]() 93 % |
![]() | 10-in-9 killer sudoku #1 by Nylimb (on 25. January 2020, 15:20) | 57 | ![]() 95 % |
![]() | Sudoku Variants Series (347) - Sudoku Connon by Richard (on 17. November 2021, 00:00) | 61 | ![]() 96 % |
![]() | Point the Silent Path by Niverio (on 18. June 2024, 09:25) | 59 | ![]() 96 % |
![]() | The Curse of King Minos by Allagem (on 17. November 2024, 07:06) | 118 | ![]() 97 % |
![]() | Embark (Fog of war/Deconstruction/Killer/Yajilin) by dumediat (on 21. January 2023, 13:50) | 149 | ![]() 97 % |
![]() | Skymania: Wolkenkratzer-Hanidoku by Pyrrhon (on 18. September 2009, 12:29) | 61 | ![]() 91 % |
![]() | Mehrdeutige Rätsel - U-Bahn unter Hochhäusern by Zzzyxas (on 30. November 2019, 17:28) | 37 | ![]() 99 % |