Popular puzzle invented in Japan

• Sudoku-like puzzle
• Puzzle whose name means "cleverness squared"
• Perhaps Bruce doubles as 6's relative
• Newspaper puzzle suggested by this crossword's shaded squares
• Diversion also called MathDoku
• Math puzzle
• Numbers game

Wikipedia Word definitions in Wikipedia
Kenken may refer to: KenKen puzzle Kenken (bell) , of Kouroussa in northwestern Guinea