Sometimes, what appears simple may not be as simple as you think. Raise your hand if you play Sudoku.
If you do, you know it “is a logic-based number-placement puzzle.” See https://nationaldaycalendar.com/international-sudoku-day-september-9/
You may not know that this international game is based on Latin Squares, first developed by a Swiss mathematician and featured in French newspapers in the 19th Century as Number Place, modernized in the USA in the 20th Century and then renamed and popularized in Japan as Sudoku which means “single number”, mass produced by The Times (London) in 2004 by a Hong Kong judge, “Wayne Gould, who devised a computer program to rapidly produce unique puzzles” and the first World Sudoku Championship was held in Lucca, Italy, from March 10 to 11, 2006. The winner was Jana Tylová of the Czech Republic.” See https://en.wikipedia.org/wiki/Sudoku
Today’s haiku: INTERNATIONAL SUDOKU DAY
Give your mind a break;
fill in the blanks with numbers.
My, how the time flies!
My wife loves sudoku and other similar puzzles, but not me. My preference is for “Wordly” type puzzles or cryptic crosswords.
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You sound like a very complimentary couple. Yin-Yang, maybe?