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The Daily Diagonal Sudoku

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Play daily sudoku online free daily and earn the score for the monthly leaderboards. The original sudoku rules imply that digits can’t repeat in a row, column and every 3x3 box known as house. This version of the number puzzle offers the additional challenge that all digits in the longest diagonals have to be different too. We recommend you to check the game options to play sudoku online as you like it. For example, you may use notes and mark possible digits. You can also opt to cross them out automatically once the relevant digit takes its place in the same row and column. If you are new to the game and would rather  prefer easy sudoku puzzles, select to highlight mistakes. You might also assess the opportunity to save your current progress or even print sudoku puzzles and enjoy them even offline.