What is sudoku
Sudoku is a logic-based,combinatorial number-placement puzzle. In classic Sudoku, the objective
is to fill a 9 × 9 grid with digits so that each column, each row, and each of the nine 3 × 3
subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the
digits from 1 to 9. The puzzle setter provides a partially completed grid, which for
a well-posed puzzle has a single solution. French newspapers featured variations of the Sudoku
puzzles in the 19th century, and the puzzle has appeared since 1979 in puzzle books under the
name Number Place. However, the modern Sudoku only began to gain widespread popularity in 1986
when it was published by the Japanese puzzle company Nikoli under the name Sudoku, meaning
"single number". It first appeared in a U.S. newspaper, and then The Times (London), in 2004,
thanks to the efforts of Wayne Gould, who devised a computer program to rapidly produce unique
puzzles.
What is sudoku
Sudoku is a logic-based,combinatorial number-placement puzzle. In classic Sudoku, the objective
is to fill a 9 × 9 grid with digits so that each column, each row, and each of the nine 3 × 3
subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the
digits from 1 to 9. The puzzle setter provides a partially completed grid, which for
a well-posed puzzle has a single solution. French newspapers featured variations of the Sudoku
puzzles in the 19th century, and the puzzle has appeared since 1979 in puzzle books under the
name Number Place. However, the modern Sudoku only began to gain widespread popularity in 1986
when it was published by the Japanese puzzle company Nikoli under the name Sudoku, meaning
"single number". It first appeared in a U.S. newspaper, and then The Times (London), in 2004,
thanks to the efforts of Wayne Gould, who devised a computer program to rapidly produce unique
puzzles.
