The Sudoku Journal
Research, technique guides, and everything in between. Written for anyone who takes their puzzle habit seriously.
The Real History of Sudoku: From an 18th-Century Mathematician to a Global Obsession
Sudoku is not a Japanese invention, did not originally use numbers, and was almost forgotten before a retired judge accidentally revived it. The real story is more interesting than the puzzle box suggests.
5 Sudoku Solving Techniques That Make Every Puzzle Manageable
Whether you are stuck on medium difficulty or intimidated by hard puzzles, these five techniques cover everything from spotting the obvious to eliminating with logic. No guessing required.
Can Sudoku Keep Your Brain Sharp? A Study of 19,000 Adults Offers an Answer
A major study from the University of Exeter tracked over 19,000 adults aged 50+ and found that regular puzzle solvers performed cognitive tests as if they were nearly a decade younger. Here is what the research actually says, and what it does not.