Fill every row and column with each number exactly once.
Turn off every light by changing a cell and its neighboring lights.
A compact classic Sudoku with 2Ã3 boxes and three difficulty levels.
The full classic Sudoku experience with 3Ã3 boxes and three difficulty levels.
Combine arithmetic cage targets with row and column logic.
Crossword-style number puzzles using sums and unique digits.
Arrange numbers so every row, column, and diagonal has the same sum.
