Sudoku Solver

Solve sudokus quickly. Enter the numbers on the board and get a solution if the sudoku is valid.

Instructions

To enter numbers on the board, click on a cell and then click on one of the numeric buttons to assign the desired number. To remove the number from that cell, you can press the delete button or click on the button with the same number. To solve the sudoku, click on Solve and to clear the entire board, click on Clear board. Also, note that there may be more than one way to solve a given sudoku, but this tool provides a single solution.

Trivia

• Origin: Although commonly associated with Japan, sudoku actually has its roots in a game called "Number Place," which appeared in a US magazine in 1979. The name "sudoku" is an abbreviation of the Japanese phrase "Sūji wa dokushin ni kagiru," meaning "the numbers must be single."
• Popularity: Sudoku became extremely popular in Japan in the 1980s and finally achieved worldwide fame in the early 2000s. This is largely due to a Japanese man named Maki Kaji, known as the "father of sudoku."
• Number of combinations: A traditional 9x9 sudoku has approximately 6.67 x 10^21 (6670903752021072936960) possible solutions. However, when considering symmetries and other restrictions, the number of unique configurations is significantly reduced to 5472730538.

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