Question 1

What are the rules of sudoku?

Accepted Answer

Every row, column, and 3x3 box must contain the digits 1 through 9 exactly once.

Question 2

Can sudoku have two solutions?

Accepted Answer

A valid standard sudoku should have one unique solution. If a puzzle allows multiple solutions, it is not considered a proper standard sudoku.

Question 3

What is the minimum number of clues in sudoku?

Accepted Answer

The proven minimum number of given clues for a valid standard sudoku with a unique solution is 17.

Question 4

Does the order I fill the cells matter?

Accepted Answer

No. You can solve the cells in any order, as long as every placement respects the row, column, and box rules.

Zasady Sudoku