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 Sudoku Solution Path   R3C7 can only be <6> R7C3 can only be <6> R7C5 can only be <8> R7C7 can only be <5> R8C4 can only be <2> R5C7 can only be <2> R8C2 can only be <3> R9C2 can only be <2> R9C1 can only be <1> R1C2 can only be <6> R2C2 can only be <7> R6C2 can only be <5> R6C8 can only be <6> R4C2 can only be <9> R6C1 can only be <7> R8C1 can only be <8> R6C5 can only be <2> R6C9 can only be <8> R2C6 is the only square in row 2 that can be <6> R2C4 is the only square in row 2 that can be <8> R5C1 is the only square in row 5 that can be <6> R8C6 is the only square in row 8 that can be <7> R9C9 is the only square in row 9 that can be <6> R9C8 is the only square in row 9 that can be <3> Squares R1C6 and R3C5 in block 2 form a simple locked pair. These 2 squares both contain the 2 possibilities <34>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.    R1C5 - removing <34> from <1349> leaving <19> Squares R1C4 and R1C5 in row 1 form a simple locked pair. These 2 squares both contain the 2 possibilities <19>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.    R1C8 - removing <1> from <125> leaving <25>    R1C9 - removing <1> from <135> leaving <35> Intersection of row 4 with block 6. The value <5> only appears in one or more of squares R4C7, R4C8 and R4C9 of row 4. These squares are the ones that intersect with block 6. Thus, the other (non-intersecting) squares of block 6 cannot contain this value.    R5C9 - removing <5> from <457> leaving <47> Squares R1C6 and R5C3 form a remote locked pair. <34> can be removed from any square that is common to their groups.    R5C6 - removing <3> from <35> leaving <5> R5C4 can only be <1> R9C6 can only be <4> R9C5 can only be <9> R1C6 can only be <3> R1C9 can only be <5> R3C5 can only be <4> R1C8 can only be <2> R3C3 can only be <3> R1C4 can only be <9> R9C4 can only be <5> R1C5 can only be <1> R1C1 can only be <4> R2C8 can only be <1> R2C9 can only be <3> R8C8 can only be <4> R2C1 can only be <2> R5C3 can only be <4> R5C9 can only be <7> R4C1 can only be <3> R5C5 can only be <3> R4C9 can only be <4> R8C9 can only be <1> R4C8 can only be <5> R4C5 can only be <7>

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