DJAPE is a nickname of Predrag Stanojevic, who grew up in Belgrade, Serbia where he lives now; however, he has traveled a bit and has lived in the US and Australia for three years. He is the author of many Sudoku, Hanjie, CalcuDoku and Hidoku puzzle books and magazines.
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Square Wisdom: Introducing CalcuDoku Puzzles
Numerical puzzles that are the most prominent successor to Sudoku.
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Sudoku: Numerical Puzzles To Thrill Your Mind
Sudoku is still alive, but are its derivatives taking over?
BC Writer of the Day