4x4 Sudoku Online

Six mini Sudoku stages with progressively fewer clues. Select an empty cell, then tap a number below. Solve six unique-solution Sudoku puzzles with no repeats in any row, column or box.

How to play

1. A hint first explains a single candidate or position. Tap Confirm to fill it and use one hint. Expert mode has no fill hints.
2. Each difficulty has six puzzles with unique solutions and progressively fewer clues. Expert mode has no number hints.
3. Select an empty cell, then tap a number below; the puzzle's given numbers cannot be changed.
4. Each row, column, and two-by-two box must contain the numbers one through four without repeats.
5. Erase, undo, or use limited hints. Fill the board correctly, then tap Next Level to continue.

Classics

• Minesweeper — Start safely and reason out where the mines are.
• Pixel Nonogram — Use number clues to uncover a hidden picture.
• Fifteen Puzzle — Slide the numbers back into order.