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 [Sudoku](https://en.wikipedia.org/wiki/Sudoku) is a logic based number-placement
 puzzle game originally from Japan. The word *sudoku* literally means
-*digit-single*. The objecttive is to fill a 9x9 grid with numbers between 1 and
+*digit-single*. The objective is to fill a 9x9 grid with numbers between 1 and
 9, without having a number repeat in a row, column or a 3x3 subgrid. Normally,
 there are a few numbers preset. In a regular sudoku, the pre-filled numbers make
 sure, that exactly one solution for the puzzle exists.