Anti-King Sudoku [KING-3-008P]

Anti-King Sudoku

US, CA; UK, DE, FR, ES, IT, other

Anti-King Sudoku Puzzle Archive

1000 Math Logic Puzzles – Collection II

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Puzzles in this book: Calcudoku, Sudoku XV, Vudoku, Mathrax, Sandwich Sudoku, Killer Sudoku, Terra X, Little Unique Killer Sudoku, Frame Sudoku, and Sum Skyscrapers.

Keep Calm and Solve Sudoku Variants – Volume 8

US, CA; UK, DE, FR, ES, IT, other