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By eliminating these numbers from other boxes in the same row or column, you can make significant progress in the puzzle. best sudoku app tricks to do sudoku Familiarize yourself with the grid: Take a look at the grid and identify the iconic landmarks and streets. Keep a Pencil and Eraser Handy: While solving the puzzles, it's a good idea to keep a pencil and eraser close by. sudoku puzzle books killer sudoku hard Hidden Single: When all other numbers in a row, column, or box have been placed, and there's only one possible number for a specific cell, it's a hidden single.

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