The Logical World of Puzzles: Rules of 'Magic Square Sudoku'
A Sudoku With Only 4 Given Digits?! - YouTube
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BoardGameGeek on X: "Want a challenge? Solve this sudoku! • The diagonals have the numbers 1-9. • The center box is a magic square. • No number is a "knight's move" away
Anything but square: from magic squares to Sudoku | plus.maths.org
Anything but square: from magic squares to Sudoku | plus.maths.org
The Math of Numb3rs 218: All's Fair"
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Anything but square: from magic squares to Sudoku | plus.maths.org