Inshi no heya ( 因子の部屋; lit. "factoring rooms") is a type of logic puzzle published by Nikoli. It is a specific form of the KenKen puzzle genre where every operation is implied to be multiplication.
Inshinoheya ( 因子の部屋; lit. "factoring rooms") is a type of logic puzzle published by Nikoli. It is a specific form of the KenKen puzzle genre where every...
division and a senior division for those over the age of 60. Sudoku Inshinoheya A New Puzzle Challenges Math Skills, New York Times, February 8, 2009...