Monster Latin Square won the 2004 American Mensa PRP award for best Web puzzle.
Place the letters A-I into the 81 squares so that no letter appears twice in any row, twice in any column, or twice in any 9-square region bordered by heavy lines.
Puzzle editing & Web programming by Matt Crawford. Puzzle creation as credited.
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latinsquare_i.php last updated February 5, 2023.