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This is the first time I play Sudoku. I learnt the basics but can't understand why this 3 is wrong. There's no other 3 in the square, column, or row. So what's
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How to Play Sudoku - Sudoku Essentials
i've seen this happen before, what techniques can i use? : r/sudoku
Toroidal sudoku I — Rätselportal — Logic Masters Deutschland
Sudoku | Family Matters
September 2358 Monat (3) - Sudoku I — Rätselportal — Logic Masters Deutschland
If you really want to learn from Good Sudoku I reckon Arcade mode is the way to go • Eurogamer.net
Sam Trenholme's webpage
Anti-Knight Sudoku. I can't believe this has a unique solution! Come try, but it's rather difficult :) : r/sudoku
Good Sudoku on the iPhone teaches you the beauty of sudoku - The Verge
Big Book of Sudoku: Over 500 Puzzles & Solutions, Easy to Hard Puzzles for Adults: Parragon Books, Parragon Books: 9781680524758: Amazon.com: Books