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Sudoku Solution Path

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R7C4 can only be <8>
R7C6 can only be <6>
R7C1 can only be <5>
R7C9 can only be <9>
R7C8 can only be <4>
R7C2 can only be <7>
R1C2 is the only square in row 1 that can be <1>
R3C9 is the only square in row 3 that can be <1>
R4C5 is the only square in row 4 that can be <8>
R4C4 is the only square in row 4 that can be <1>
R8C7 is the only square in row 8 that can be <5>
R9C5 is the only square in row 9 that can be <1>
R8C5 can only be <3>
R8C1 is the only square in row 8 that can be <1>
R9C3 is the only square in row 9 that can be <9>
R5C1 is the only square in column 1 that can be <8>
R5C6 is the only square in column 6 that can be <4>
Squares R2C1 and R2C9 in row 2 form a simple locked pair. These 2 squares both contain the 2 possibilities <36>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.
   R2C2 - removing <6> from <456> leaving <45>
   R2C3 - removing <6> from <4567> leaving <457>
   R2C7 - removing <36> from <3678> leaving <78>
   R2C8 - removing <36> from <36789> leaving <789>
Squares R2C1 and R3C1 in block 1 form a simple locked pair. These 2 squares both contain the 2 possibilities <36>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.
   R3C2 - removing <6> from <26> leaving <2>
Squares R1C3 and R1C5 in row 1 form a simple locked pair. These 2 squares both contain the 2 possibilities <47>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.
   R1C7 - removing <7> from <237> leaving <23>
   R1C8 - removing <7> from <237> leaving <23>
Squares R1C7 and R1C8 in block 3 form a simple locked pair. These 2 squares both contain the 2 possibilities <23>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.
   R2C9 - removing <3> from <36> leaving <6>
   R3C8 - removing <3> from <3679> leaving <679>
R2C1 can only be <3>
R8C9 can only be <2>
R5C9 can only be <3>
R3C1 can only be <6>
R5C4 can only be <5>
R5C2 can only be <6>
R6C4 can only be <9>
R3C4 can only be <3>
R3C6 can only be <7>
R3C8 can only be <9>
R6C6 can only be <2>
R1C5 can only be <4>
R5C5 can only be <7>
R9C2 can only be <8>
R4C3 can only be <2>
R5C8 can only be <2>
R6C5 can only be <6>
R1C8 can only be <3>
R4C7 can only be <6>
R6C7 can only be <7>
R6C3 can only be <5>
R4C6 can only be <3>
R2C7 can only be <8>
R8C2 can only be <4>
R1C3 can only be <7>
R2C5 can only be <9>
R1C7 can only be <2>
R9C8 can only be <6>
R2C8 can only be <7>
R9C7 can only be <3>
R2C3 can only be <4>
R8C3 can only be <6>
R2C2 can only be <5>
R8C8 can only be <8>


 

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