The number alone old man specially studies the number alone, therefore the topic very is all difficult oh Hands down the number alone source to get up to the Latin square matrix (Latin Square),1,970 generations develops in US, changes name puts together the chart after the numeral (Number Place), spreads to Japan and carries forward, puts together the chart game by mathematics intelligence game intelligence to publish. A game magazine officially named in 1984 it for the number is alone, the meaning was only has a numeral in each standard.