12
Daily Quiz 44
(niyo.link)
Your Daily Quiz - Daily-Quiz-44 is here! What's your score? https://niyo.link/popquiz/quiz/Daily-Quiz-44
Your Score: 10 of 12
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Also no 9 is incorrect. It was invented by an American under the name of Number Place, was released to Japan as Sลซji wa dokushin ni kagiru (the digits must be single", or "the digits are limited to one occurrence") then abbreviated to Sudoku.
Thanks for the info, i didn't know that.