Practice Hidden Triple Sudoku Technique

Ready to put the hidden triple technique into action? This page is designed for you to practice and master hidden triples with real Sudoku puzzles.

Quick Reminder: What is a Hidden Triple?

A hidden triple occurs when three numbers are candidates in only three cells within a row, column, or box—even if those cells have other candidates. When you spot a hidden triple, you can eliminate all other candidates from those three cells.

Want a full step-by-step guide? Read the Hidden Triple Technique article

How to Practice

  1. Look for three numbers that appear as candidates in only three cells within a house (row, column, or box).
  2. Remove all other candidates from those three cells.
  3. Use this elimination to unlock more singles and progress in the puzzle.

Start Practicing

Try the puzzles below and focus on finding and applying hidden triples. The more you practice, the easier it will be to spot this advanced technique in any Sudoku!

Now that you know how to apply this strategy, see if you can find it on one of our Sudoku puzzles!