Fill the 9×9 grid so that each row, column, and 3×3 box contains all digits from 1-9 without repeating.
+10 points × current combo multiplier
+50 points × combo when you complete a row, column, or 3×3 box
Build combos by completing rows, columns, or boxes!
Each region completion adds +1 to your multiplier
Complete another region within 35s to keep your combo alive!
Wrong answers reset your combo to x1
Reveals the correct number for the selected cell. No combo bonus for hints.
Pauses the timer for 30 seconds. Great for thinking through tough spots!
Auto-fills up to 3 cells in the same 3×3 box as your selected cell.
Gain XP equal to 10% of your score. Complete puzzles for bonus XP!
Each new game gives you fresh power-ups based on your level:
Base: 2 Hints, 1 Freeze, 1 Blast
+1 Hint every 5 levels
+1 Freeze every 10 levels
+1 Blast every 15 levels
Complete at least one puzzle each day to build your streak! Miss a day and it resets to zero.
Target times: Easy 5min, Medium 10min, Hard 15min, Expert 20min