Revenge of Killer Sudoku 4: 150 Of All New Puzzles
DJAPE is the author of over 35 puzzle books, ranging from Sudoku variants such as Killer Sudoku and Samurai Sudoku to Hidoku, CalcuDoku and Picross/Hanjie/Griddlers/Nonograms puzzles.  Also, Djape contributes regularly to newspapers and magazines across the globe, includingThe Washington Post. Currently Djape is working on hisPhDthesis inComputer Science. Likessailing, playingbridgeand traveling.