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 Goldilocks Zone
by marty_sears (on 14. September 2024, 15:04) | 151 | 
99 %
|
| Tapa Distiller
by yureklis (on 18. August 2009, 21:08) | 51 |
93 %
|
| 4 Gleiche
by Luigi (on 1. October 2009, 17:10) | 39 |
91 %
|
| Das versteckte Rätsel
by Luigi (on 18. March 2010, 07:39) | 14 |
92 %
|
| Verflixtes ABCtje
by ibag (on 28. September 2011, 16:55) | 38 |
95 %
|
| April ABCtjes Monat (3) - ABCtje mit und ohne X
by Richard (on 20. April 2012, 12:00) | 38 |
92 %
|
| Wichtelkalender 2014 - September: Materie-Antimaterie-Rundwege
by Statistica (on 1. September 2014, 00:00) | 40 |
98 %
|
| Inseln mit Hochhäusern, Teil 3
by pirx (on 8. December 2016, 20:00) | 45 |
98 %
|
| OSTERN - Buchstabenrätsel
by DocLogic (on 31. March 2020, 22:50) | 34 |
92 %
|
| Two Sum Sudoku Finale - With Only One Numerical Clue!
by ProwlingTiger (on 1. May 2020, 21:35) | 45 |
98 %
|
| Galaxy Killer #2
by Phistomefel (on 18. May 2020, 19:10) | 68 |
94 %
|
| Teams Sudoku - Counts and Sums
by stephane.bura (on 31. May 2020, 14:27) | 23 |
97 %
|
| Wichtel 2019 (2): Bier oder Wein
by wichtel (on 29. June 2020, 19:20) | 33 |
97 %
|
| Parity Little Killer Sudoku
by Aspartagcus (on 16. July 2020, 23:04) | 16 |
94 %
|
| Killer Pentuplet, Little Twins, Little Squares & Odd Knights
by SudokuExplorer (on 23. August 2020, 00:00) | 21 |
99 %
|
| Teams Sudoku - Counts or Sums?
by stephane.bura (on 17. August 2020, 20:00) | 13 |
95 %
|
| Space Oddity - Irregular Parity Galaxy Killer Sudoku
by Yohann (on 20. August 2020, 11:18) | 23 |
98 %
|
| Pentominous Star Battle
by Jesper (on 7. September 2020, 08:25) | 87 |
95 %
|
| Battlefield Sandwich Sudoku - Fight For Lunch
by DiMono (on 7. September 2020, 18:16) | 23 |
91 %
|
| Killer Python
by jacksongriggs (on 8. September 2020, 05:29) | 13 |
98 %
|
