Wordoku Rules: How Letter Sudoku Works
Wordoku uses letters instead of numbers. Learn the rules, how it compares with classic Sudoku, and how to solve without guessing.
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Get the iPhone App →Wordoku is Sudoku with letters instead of numbers. The rule is the same: each row, column, and 3×3 box must contain each letter exactly once.
Many Wordoku puzzles use nine letters that can spell a hidden word after the grid is solved. The word is fun, but it is not the main solving method. You still solve by logic, just like classic Sudoku.
Play free Sudoku online on Pure Sudoku.
Wordoku rules
- Use nine different letters instead of digits 1-9.
- Each row must contain all nine letters once.
- Each column must contain all nine letters once.
- Each 3×3 box must contain all nine letters once.
How to solve Wordoku
- Write the letter set at the top of the page.
- Scan rows, columns, and boxes for missing letters.
- Place a letter only when one position is forced.
- Use candidate notes exactly as you would with numbers.
Wordoku vs Sudoku
Wordoku looks different, but it is not a word game in the crossword sense. Letters replace digits, so the pattern recognition and elimination logic stay the same.
FAQ
Do you need vocabulary to solve Wordoku?
No. Vocabulary can help reveal the final hidden word, but the grid itself is solved with Sudoku logic.
Can beginners play Wordoku?
Yes, but beginners should learn classic Sudoku first because numbers are easier to scan quickly.