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Sudoku Solution Path

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R4C2 can only be <9>
R5C2 can only be <8>
R5C3 can only be <2>
R6C2 can only be <4>
R2C1 is the only square in row 2 that can be <4>
R4C5 is the only square in row 4 that can be <3>
R6C4 is the only square in column 4 that can be <8>
R6C5 can only be <6>
R3C5 is the only square in column 5 that can be <8>
Intersection of row 9 with block 7. The value <1> 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 <1> from <1689> leaving <689>
Intersection of column 5 with block 8. The value <5> only appears in one or more of squares R7C5, R8C5 and R9C5 of column 5. These squares are the ones that intersect with block 8. Thus, the other (non-intersecting) squares of block 8 cannot contain this value.
   R8C6 - removing <5> from <1579> leaving <179>
Intersection of column 7 with block 3. The value <2> only appears in one or more of squares R1C7, R2C7 and R3C7 of column 7. These squares are the ones that intersect with block 3. Thus, the other (non-intersecting) squares of block 3 cannot contain this value.
   R1C8 - removing <2> from <12369> leaving <1369>
   R1C9 - removing <2> from <236> leaving <36>
   R2C9 - removing <2> from <2357> leaving <357>
   R3C8 - removing <2> from <1259> leaving <159>
   R3C9 - removing <2> from <25> leaving <5>
R3C2 can only be <1>
R3C8 can only be <9>
R1C2 can only be <3>
R3C1 can only be <2>
R1C9 can only be <6>
R1C7 can only be <2>
R1C8 can only be <1>
R2C7 can only be <7>
R2C9 can only be <3>
R9C9 can only be <7>
R9C2 can only be <5>
R8C9 can only be <8>
R7C9 can only be <2>
R7C2 can only be <7>
R7C8 can only be <5>
R7C5 can only be <9>
R4C8 can only be <2>
R4C4 can only be <1>
R6C8 can only be <7>
R6C6 can only be <2>
R5C8 can only be <6>
R7C1 can only be <8>
R2C5 can only be <1>
R8C5 can only be <5>
R4C6 can only be <5>
R8C4 can only be <7>
R5C7 can only be <5>
R9C8 can only be <3>
R2C6 can only be <9>
R1C1 can only be <9>
R8C6 can only be <1>
R5C4 can only be <9>
R9C3 can only be <9>
R1C3 can only be <8>
R8C1 can only be <6>
R2C3 can only be <5>
R2C4 can only be <2>
R5C6 can only be <7>
R8C7 can only be <9>
R9C1 can only be <1>
R8C3 can only be <3>
R9C7 can only be <6>


 

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