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 Sudoku Solution Path   R7C3 can only be <8> R7C7 can only be <4> R9C3 can only be <3> R5C1 is the only square in row 5 that can be <2> R6C8 is the only square in row 6 that can be <2> R6C4 is the only square in row 6 that can be <5> R8C9 is the only square in row 8 that can be <3> R8C2 is the only square in column 2 that can be <5> R6C2 is the only square in column 2 that can be <4> R2C9 is the only square in column 9 that can be <4> Squares R3C3 and R3C7 in row 3 form a simple locked pair. These 2 squares both contain the 2 possibilities <27>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.    R3C2 - removing <7> from <17> leaving <1>    R3C6 - removing <27> from <2467> leaving <46> Squares R1C7 and R3C7 in column 7 form a simple locked pair. These 2 squares both contain the 2 possibilities <27>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.    R4C7 - removing <7> from <789> leaving <89>    R8C7 - removing <7> from <789> leaving <89> R8C8 is the only square in row 8 that can be <7> Squares R5C9 and R6C9 in column 9 form a simple locked pair. These 2 squares both contain the 2 possibilities <78>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.    R1C9 - removing <7> from <567> leaving <56>    R4C9 - removing <78> from <1678> leaving <16>    R9C9 - removing <8> from <158> leaving <15> R9C6 is the only square in row 9 that can be <8> R8C7 is the only square in row 8 that can be <8> R4C7 can only be <9> R9C1 is the only square in row 9 that can be <4> R8C1 can only be <1> R5C4 is the only square in column 4 that can be <8> R5C9 can only be <7> R5C5 can only be <9> R5C6 can only be <3> R6C9 can only be <8> R6C1 can only be <9> R8C5 can only be <2> R4C6 can only be <7> R6C3 can only be <7> R3C3 can only be <2> R8C6 can only be <4> R8C4 can only be <9> R3C6 can only be <6> R3C7 can only be <7> R2C3 can only be <9> R3C4 can only be <4> R7C6 can only be <5> R2C4 can only be <3> R1C7 can only be <2> R7C8 can only be <1> R2C6 can only be <2> R9C5 can only be <1> R7C4 can only be <6> R4C8 can only be <6> R9C9 can only be <5> R9C8 can only be <9> R1C9 can only be <6> R1C1 can only be <3> R4C9 can only be <1> R2C8 can only be <5> R1C4 can only be <1> R2C5 can only be <7> R1C2 can only be <7> R4C1 can only be <8> R1C5 can only be <5> R2C2 can only be <8> R2C1 can only be <6> R4C2 can only be <3>

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