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Sudoku Solution Path

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R5C4 can only be <3>
R7C3 can only be <2>
R5C6 can only be <9>
R5C8 can only be <5>
R4C4 can only be <7>
R6C6 can only be <6>
R5C2 can only be <2>
R4C1 is the only square in row 4 that can be <5>
R4C3 is the only square in row 4 that can be <9>
R6C7 is the only square in row 6 that can be <9>
R6C9 is the only square in row 6 that can be <4>
R7C5 is the only square in row 7 that can be <9>
R9C6 is the only square in row 9 that can be <2>
Squares R1C8 and R4C8 in column 8 form a simple locked pair. These 2 squares both contain the 2 possibilities <38>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.
   R3C8 - removing <38> from <2348> leaving <24>
   R7C8 - removing <8> from <478> leaving <47>
   R8C8 - removing <8> from <2478> leaving <247>
R7C9 is the only square in row 7 that can be <8>
R4C9 can only be <3>
R4C8 can only be <8>
R1C8 can only be <3>
R7C2 is the only square in row 7 that can be <5>
R2C2 is the only square in column 2 that can be <7>
Intersection of row 1 with block 2. The value <8> only appears in one or more of squares R1C4, R1C5 and R1C6 of row 1. These squares are the ones that intersect with block 2. Thus, the other (non-intersecting) squares of block 2 cannot contain this value.
   R2C4 - removing <8> from <1458> leaving <145>
   R2C6 - removing <8> from <358> leaving <35>
Intersection of row 9 with block 7. The value <3> only appears in one or more of squares R9C1, R9C2 and R9C3 of row 9. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain this value.
   R8C1 - removing <3> from <3467> leaving <467>
   R8C3 - removing <3> from <136> leaving <16>
R2C3 is the only square in column 3 that can be <3>
R2C6 can only be <5>
R1C6 can only be <8>
R1C4 can only be <1>
R8C6 can only be <3>
R8C5 can only be <4>
R1C3 can only be <6>
R2C4 can only be <4>
R2C5 can only be <6>
R9C4 can only be <5>
R3C5 can only be <3>
R8C4 can only be <8>
R1C9 can only be <5>
R8C3 can only be <1>
R8C7 can only be <5>
R8C9 can only be <2>
R9C2 can only be <3>
R8C8 can only be <7>
R2C9 can only be <1>
R9C1 can only be <4>
R6C2 can only be <8>
R2C7 can only be <8>
R3C9 can only be <6>
R6C1 can only be <3>
R3C2 can only be <1>
R8C1 can only be <6>
R7C8 can only be <4>
R9C7 can only be <1>
R7C1 can only be <7>
R2C1 can only be <2>
R3C7 can only be <4>
R3C8 can only be <2>
R3C1 can only be <8>


 

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