Sudoku Tips
Scan a Sudoku Grid Faster: Row & Column Cross-Hatching
Learn how to use row and column cross-hatching to scan a Sudoku grid faster, place numbers confidently, and solve puzzles…
Read article →Pick a difficulty and start solving. Your puzzle, notes and timer save automatically, so you can step away and come right back.
Learn how to use row and column cross-hatching to scan a Sudoku grid faster, place numbers confidently, and solve puzzles…
Read article →Master the X-Wing technique in Sudoku. Learn how to spot the pattern, confirm the rectangle, and eliminate candidates with our…
Read article →Discover how newspapers grade and publish Sudoku puzzles, from Easy to Diabolical, and what goes into creating the perfect daily…
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