In 1979, the puzzle began to appear in puzzle books, where it was initially known as Number Place. Sudoku continued to gain widespread popularity throughout the 19th and 20th centuries. These puzzles were relatively easier to solve than most modern Sudoku puzzles. The first variations of the modern Sudoku puzzles appeared in French newspapers in the 19th century. Sudoku has been around for hundreds of years. The smaller 3 x 3 subgrids are also known as blocks, boxes, or regions. In an ideal Sudoku puzzle, the objective of the game is to fill a 9 x 9 grid with digits 1 – 9, such that you only use each digit once in each row, column, and the 3 x 3 subgrids comprising the larger grid. Sudoku, originally known as Number Puzzle, refers to a logic-based, combinatorial number-placement puzzle game. 1) First things first…understand the objective of the game.
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