Sudoku is a puzzle based in logical selection of numbers. The goal is to put numbers, from 1 to 9, in each one of empty cells of a 9-by-9 matrix, made of 3-by-3 submatrix, called region. The puzzle has initial tips, cells with values already defined, that help to induce or deduce the values of the empty cells.
To solve this, just use logical reasoning. Don't let the name fool you, this app is for professionals.
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