the hardest sudoku: Miracle Sudoku by Mitchell Lee

# Miracle Sudoku by Mitchell Lee: The Ultimate Challenge for Sudoku Enthusiasts

Are you a Sudoku fan who's looking for a new challenge? Look no further than Miracle Sudoku, a type of Sudoku puzzle that was invented by Mitchell Lee. The puzzle is so difficult that it's been said to require a miracle to solve it, hence the name Miracle Sudoku.

In this article, we'll explore the rules and challenges of Miracle Sudoku, as well as provide tips and tricks for solving it. We'll also discuss Mitchell Lee, the mathematician and computer scientist who created this and other types of Sudoku puzzles.

What is Miracle Sudoku?

Miracle Sudoku is similar to traditional Sudoku, but with additional rules that make it much more challenging. In addition to the usual rules of Sudoku, Miracle Sudoku requires that every set of nine cells containing consecutive digits in any order must add up to a number divisible by nine. This means that not only do the rows, columns, and boxes need to contain the digits 1 through 9, but they must also add up to a multiple of 9.

This additional rule adds a whole new level of complexity to the puzzle, making it much harder than traditional Sudoku. Solving Miracle Sudoku requires not only logical thinking but also the ability to recognize patterns and make deductions.

Who is Mitchell Lee?

Mitchell Lee is a mathematician and computer scientist who has been researching Sudoku puzzles for many years. He has created several types of Sudoku puzzles, including Samurai Sudoku and Killer Sudoku, but Miracle Sudoku is widely regarded as his most challenging creation.

Lee's interest in Sudoku puzzles began when he was studying computer science in graduate school. He became fascinated by the puzzles' logical complexity and began to explore different variations and challenges.

Tips and Tricks for Solving Miracle Sudoku

Solving Miracle Sudoku requires a combination of logical thinking, pattern recognition, and trial and error. Here are some tips and tricks that may help you solve this challenging puzzle:

  1. Start with the corners: Look for corners of the puzzle where only one possible number can fit, and work from there.

  2. Identify consecutive sets: Identify sets of consecutive numbers that need to add up to a multiple of 9, and use this information to narrow down the possibilities for other cells in the same row, column, or box.

  3. Use pencil marks: Make pencil marks in each cell to keep track of possible numbers for that cell. This will help you eliminate possibilities as you go.

  4. Look for patterns: Look for patterns in the rows, columns, and boxes that can help you eliminate possibilities or identify missing numbers.

  5. Be patient: Solving Miracle Sudoku takes time and practice. Don't get discouraged if you can't solve it right away. Keep working at it, and eventually, you'll get there.


Miracle Sudoku by Mitchell Lee is a challenging and rewarding puzzle that will test your logical thinking and pattern recognition skills. With its additional rules and complexity, it offers a new level of challenge for Sudoku enthusiasts. By following the tips and tricks outlined in this article, you'll be well on your way to solving this ultimate Sudoku challenge.


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