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 Sudoku Solution Path   R9C6 can only be <6> R6C5 is the only square in row 6 that can be <3> R8C5 is the only square in row 8 that can be <5> R4C6 is the only square in row 4 that can be <5> R5C6 can only be <4> R6C6 can only be <2> R1C6 can only be <8> R2C5 can only be <6> R3C5 can only be <9> R1C4 can only be <2> R1C8 is the only square in row 1 that can be <9> R4C5 is the only square in row 4 that can be <8> R5C4 is the only square in row 5 that can be <9> R6C1 is the only square in row 6 that can be <4> R7C2 is the only square in row 7 that can be <5> R8C9 is the only square in row 8 that can be <9> R8C3 is the only square in row 8 that can be <2> R3C2 is the only square in row 3 that can be <2> R7C9 is the only square in row 7 that can be <2> R9C7 is the only square in row 9 that can be <4> R4C4 is the only square in column 4 that can be <6> R3C9 is the only square in column 9 that can be <6> R3C3 is the only square in row 3 that can be <4> R2C9 is the only square in row 2 that can be <4> Squares R9C2 and R9C4 in row 9 form a simple locked pair. These 2 squares both contain the 2 possibilities <17>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.    R9C3 - removing <17> from <1378> leaving <38>    R9C8 - removing <1> from <138> leaving <38> Squares R4C9 and R6C9 in block 6 form a simple locked pair. These 2 squares both contain the 2 possibilities <17>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.    R5C7 - removing <17> from <1357> leaving <35>    R5C8 - removing <1> from <135> leaving <35> Intersection of column 1 with block 7. The value <6> only appears in one or more of squares R7C1, R8C1 and R9C1 of column 1. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain this value.    R7C3 - removing <6> from <13678> leaving <1378> Squares R5C5 and R9C2 form a remote locked pair. <17> can be removed from any square that is common to their groups.    R5C2 - removing <17> from <167> leaving <6> R1C3 is the only square in row 1 that can be <6> Squares R5C3 and R7C3 in column 3 and R5C5 and R7C5 in column 5 form a Simple X-Wing pattern on possibility <1>. All other instances of this possibility in rows 5 and 7 can be removed.    R7C1 - removing <1> from <13678> leaving <3678>    R7C7 - removing <1> from <1368> leaving <368>    R7C8 - removing <1> from <138> leaving <38> R3C8 is the only square in column 8 that can be <1> R3C1 can only be <8> R1C7 can only be <7> R1C2 can only be <1> R2C7 can only be <8> R3C7 can only be <5> R5C7 can only be <3> R5C8 can only be <5> R7C7 can only be <6> R8C7 can only be <1> R8C1 can only be <6> R9C2 can only be <7> R9C4 can only be <1> R7C1 can only be <3> R6C4 can only be <7> R7C5 can only be <7> R6C9 can only be <1> R5C5 can only be <1> R4C9 can only be <7> R7C8 can only be <8> R2C1 can only be <7> R9C3 can only be <8> R7C3 can only be <1> R9C8 can only be <3> R2C3 can only be <3> R4C1 can only be <1> R5C3 can only be <7>

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