There is sudoku--and then there's Sudoku from Nikoli, the Japanese masters who invented the game. Every puzzle in the Original Sudoku Page-a-Day Calendar is crafted by a human--not spit out by a computer--so putting pencil to paper is like going one-on-one against a Sudoku master for a challenge that balances toughness with an elegant solvability, giving you a real sense of satisfaction when you find the solution. The...
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