4 bits Sudoku (hard version)
| Solver | Solution date |
|---|---|
| rich_27 | on 2. September 2025, 16:50 |
| Carolin | on 9. May 2025, 13:22 |
| isajo4002 | on 30. December 2024, 14:37 |
| sandmoppe | on 28. February 2022, 18:07 |
| Mody | on 23. July 2020, 08:40 |
| Yohann | on 2. July 2020, 13:55 |
| sf2l | on 26. April 2020, 22:03 |
| Rollo | on 13. April 2020, 20:11 |
| zhergan | on 10. April 2020, 23:46 |
| Uhu | on 9. April 2020, 21:20 |
| Timwi | on 9. April 2020, 20:44 |
| zorant | on 9. April 2020, 20:01 |
| moss | on 4. April 2020, 21:17 |
| ch1983 | on 3. April 2020, 20:37 |
| Ours brun | on 3. April 2020, 16:38 |
| Mesmer | on 3. April 2020, 12:25 |
| NikolaZ | on 31. March 2020, 08:42 |
| marcmees | on 30. March 2020, 10:54 |
| geronimo92 | on 30. March 2020, 00:00 |
| ManuH | on 29. March 2020, 17:54 |
| skywalker | on 29. March 2020, 17:15 |
| Julianl | on 29. March 2020, 13:17 |
| Realshaggy | on 29. March 2020, 05:22 |
| kuhlde1337 | on 29. March 2020, 04:43 |
| Zzzyxas | on 29. March 2020, 01:11 |
| cdwg2000 | on 28. March 2020, 23:08 |
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