| Solved date | Sudoku of | Level | your time |
|---|---|---|---|
| 23rd of Apr 2010 | 8th of Dec 2020 | very hard | 27:55 |
| 11th of Apr 2010 | 6th of Jul 2021 | very hard | 32:44 |
| 6th of Mar 2010 | 23rd of Jan 2021 | very hard | 36:18 |
| 3rd of Mar 2010 | 1st of Jan 2021 | very hard | 35:13 |
| 10th of Feb 2010 | 2nd of Jun 2020 | very hard | 30:40 |
| 8th of Feb 2010 | 25th of Jul 2020 | very hard | 30:44 |
| 5th of Feb 2010 | 25th of Sep 2021 | very hard | 41:14 |
| 14th of Jan 2010 | 14th of May 2020 | very hard | 27:49 |
| 10th of Jan 2010 | 4th of Mar 2021 | very hard | 37:10 |
| 11th of Nov 2009 | 13th of Nov 2020 | very hard | 24:33 |
| 28th of Oct 2009 | 29th of Sep 2020 | very hard | 24:30 |
| 15th of Oct 2009 | 19th of Apr 2020 | very hard | 26:11 |
| 11th of Oct 2009 | 1st of Jul 2021 | very hard | 35:21 |
| 10th of Oct 2009 | 16th of Mar 2021 | very hard | 34:41 |