SudokuguroWhat is Sudoku?
Sudoku is a 9x9 logic puzzle where the player fills empty cells with numbers from 1 to 9. Each row, column, and 3x3 box must contain every number exactly once.
Learn Sudoku
Sudoku Tutorial
Learn how to solve classic 9x9 Sudoku puzzles with simple rules, scanning techniques, and practical habits for clean play.
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Key Takeaways
- Sudoku is a classic 9x9 logic puzzle with row, column, and 3x3 box constraints.
- Beginners should place only numbers that are forced by visible clues.
- Candidate notes become useful after direct solves slow down.
How should a beginner start Sudoku?
Beginners should start with easy Sudoku, scan the most filled rows and boxes first, and place only numbers that are forced by the visible clues.
Basic Rules
Fill every empty cell with a number from 1 to 9. Each row, column, and 3x3 box must contain every number exactly once.
Start with the most constrained rows, columns, and boxes. When only one number can fit in a cell, place it and keep scanning.
Beginner Solving Flow
Look for missing numbers in a single box, then cross-check the matching rows and columns.
Use undo and erase to keep the board tidy. Hints are best used after you have scanned the puzzle and want to learn the next logical step.
Technique Ladder
A useful learning order is scanning, naked singles, hidden singles, locked candidates, naked pairs, hidden pairs, triples, and then advanced fish or coloring patterns.
Learn the next technique only when your current level starts to stall consistently.