GoalFill the grid so numbers and math work out
Pick a cell
Click or tap on empty cell
→
Enter a digit
Use arrows or click number
→
Check constraints
Row, column, box must work
→
Complete the puzzle
Fill until grid is full
↺Next puzzle has more cells or harder math
WinAll rows, columns, and boxes filled correctly
Game overNumber breaks a row, column, or math box
Open
