🧩 Smart Sudoku Solver

Enter your puzzle below and let our logic engine explain the next step.

Enter your current puzzle numbers into the grid above, then try our logic helper!

How to use this Sudoku Solver

Unlike standard solvers that simply fill in the blank squares, the PuzzlyNest Smart Sudoku Solver is designed to be a teaching tool. We believe the joy of Sudoku is in the deduction, not just the completion.

  1. Input your specific puzzle: Click on the cells in the grid above and type the numbers exactly as they appear in your newspaper, book, or app.
  2. Get a Hint: If you are stuck, click the "Get Hint" button. Our engine will analyze the board and find the most logical next move, explaining why that number belongs there.
  3. Solve All: Just want the answers? Click "Solve Complete Board" to instantly fill the entire grid.

Top 3 Sudoku Strategies

  • 1. Scanning: Look at the 3x3 boxes. If a row has a 7, and the row below has a 7, the 7 in the third box must be in the remaining row.
  • 2. Naked Singles: Sometimes, a specific cell can only possibly contain one number because every other number exists in its row, column, or box.
  • 3. Pencil Marks: For harder puzzles, write down small candidate numbers in corners to spot "Pairs" and "Triplets".

Why use a solver?

Getting completely stuck can be frustrating. A specific hint acts as a "nudge" to get your brain moving again. By understanding the logic behind a specific move, you actually become a better player over time.