How was sudoku invented?

Answer:
American archtect Howard Garns first designed the puzzle and they were a type of latin square. When first published in 1979 they were called 'number place'.
They were published in Japan in 1986 and were an instant hit, because it is almost impossible to make a crossword out of the Japanese lettering and it was something new to them. They called it Sodoku meaning 'single number'.
First answer by Peterfromredcar. Last edit by Peterfromredcar. Contributor trust: 75 [recommend contributor recommended]. Question popularity: 4 [recommend question].