Classic number puzzle. Fill the 9x9 grid so every row, column, and 3x3 box contains digits 1-9.
| Level | Easy | Medium | Hard | |
|---|---|---|---|---|
| 🥇 | Expert | <3 min | <8 min | <15 min |
| 🥈 | Advanced | 3-6 min | 8-15 min | 15-30 min |
| 🥉 | Good | 6-10 min | 15-25 min | 30-45 min |
| 🌟 | Average | 10-15 min | 25-40 min | 45-60 min |
| Beginner | 15+ min | 40+ min | 60+ min |