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 Sudoku Solution Path    R2C2 can only be <4> R2C8 can only be <8> R8C8 can only be <6> R1C3 can only be <7> R2C5 can only be <9> R5C8 can only be <4> R3C1 can only be <8> R1C4 can only be <8> R1C1 can only be <5> R1C9 is the only square in row 1 that can be <9> R5C1 is the only square in row 5 that can be <9> R6C3 is the only square in row 6 that can be <4> R9C4 is the only square in row 9 that can be <9> R9C5 is the only square in row 9 that can be <5> R4C7 is the only square in row 4 that can be <5> R5C4 is the only square in row 5 that can be <5> R5C3 is the only square in column 3 that can be <1> R5C9 is the only square in row 5 that can be <2> R9C7 is the only square in column 7 that can be <7> Squares R9C1 and R9C3 in row 9 form a simple locked pair. These 2 squares both contain the 2 possibilities <26>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.    R9C6 - removing <6> from <468> leaving <48> Squares R6C1 and R9C1 in column 1 form a simple locked pair. These 2 squares both contain the 2 possibilities <26>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.    R4C1 - removing <26> from <2367> leaving <37>    R7C1 - removing <6> from <367> leaving <37> Squares R7C9 and R9C9 in column 9 form a simple locked pair. These 2 squares both contain the 2 possibilities <48>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.    R6C9 - removing <8> from <168> leaving <16> Squares R4C1 and R8C5 form a remote locked pair. <37> can be removed from any square that is common to their groups.    R4C5 - removing <7> from <27> leaving <2> R4C3 can only be <6> R6C5 can only be <8> R6C7 can only be <1> R5C6 can only be <7> R6C9 can only be <6> R1C7 can only be <3> R6C1 can only be <2> R4C9 can only be <3> R1C6 can only be <4> R5C7 can only be <8> R3C9 can only be <1> R9C3 can only be <2> R4C1 can only be <7> R5C2 can only be <3> R9C1 can only be <6> R1C5 can only be <1> R9C6 can only be <8> R7C1 can only be <3> R8C2 can only be <7> R8C5 can only be <3> R3C5 can only be <7> R9C9 can only be <4> R7C6 can only be <6> R7C9 can only be <8> R3C4 can only be <6> R7C5 can only be <4> R7C4 can only be <7> R3C6 can only be <3>