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 Sudoku Solution Path   R1C6 is the only square in row 1 that can be <9> R2C5 is the only square in row 2 that can be <3> R4C7 is the only square in row 4 that can be <7> R6C4 is the only square in row 6 that can be <3> R7C3 is the only square in row 7 that can be <3> R9C9 is the only square in row 9 that can be <3> R6C1 is the only square in column 1 that can be <9> R5C8 is the only square in row 5 that can be <9> R7C2 is the only square in row 7 that can be <9> R8C7 is the only square in row 8 that can be <9> R6C7 is the only square in column 7 that can be <8> R6C9 is the only square in row 6 that can be <4> R4C9 can only be <2> R4C6 is the only square in row 4 that can be <4> R8C9 is the only square in block 9 that can be <5> R1C9 can only be <6> R9C7 is the only square in column 7 that can be <6> Squares R2C7 and R3C7 in block 3 form a simple locked pair. These 2 squares both contain the 2 possibilities <45>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.    R2C8 - removing <4> from <147> leaving <17>    R3C8 - removing <4> from <147> leaving <17> Intersection of row 2 with block 1. The value <6> only appears in one or more of squares R2C1, R2C2 and R2C3 of row 2. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.    R3C2 - removing <6> from <1246> leaving <124> Intersection of row 5 with block 5. The value <5> only appears in one or more of squares R5C4, R5C5 and R5C6 of row 5. These squares are the ones that intersect with block 5. Thus, the other (non-intersecting) squares of block 5 cannot contain this value.    R4C5 - removing <5> from <158> leaving <18> Intersection of row 7 with block 8. The values <56> only appears in one or more of squares R7C4, R7C5 and R7C6 of row 7. These squares are the ones that intersect with block 8. Thus, the other (non-intersecting) squares of block 8 cannot contain these values.    R8C4 - removing <6> from <1467> leaving <147>    R8C5 - removing <6> from <168> leaving <18> Squares R4C5 and R8C5 in column 5 form a simple locked pair. These 2 squares both contain the 2 possibilities <18>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.    R3C5 - removing <1> from <1256> leaving <256>    R6C5 - removing <1> from <12> leaving <2>    R7C5 - removing <8> from <2568> leaving <256> R6C3 can only be <1> R5C4 can only be <5> R5C6 can only be <8> R5C2 can only be <2> R4C5 can only be <1> R4C3 can only be <5> R4C1 can only be <8> R1C3 can only be <7> R8C5 can only be <8> R8C8 can only be <4> R9C8 can only be <2> R7C8 can only be <8> R1C4 can only be <1> R8C3 can only be <6> R1C2 can only be <8> R8C4 can only be <7> R1C1 can only be <5> R8C2 can only be <1> R2C3 can only be <2> R9C4 can only be <4> R9C6 can only be <1> R9C1 can only be <7> R2C1 can only be <1> R2C8 can only be <7> R3C2 can only be <4> R2C6 can only be <5> R3C8 can only be <1> R3C7 can only be <5> R2C2 can only be <6> R3C5 can only be <6> R2C7 can only be <4> R7C6 can only be <2> R3C4 can only be <2> R7C5 can only be <5> R7C4 can only be <6> R3C6 can only be <7>

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