#66 159 Sudoku

Each row, column and 3x3 box must contain the digits 1 through 9.

Digits in the first column indicate in which column the digit 1 is placed in the respective row.

Digits in the fifth column indicate in which column the digit 5 is placed in the respective row.

Digits in the ninth column indicate in which column the digit 9 is placed in the respective row.

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