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Sudoku Solution Path

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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>


 

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