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Sudoku Solution Path

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R6C5 can only be <3>
R6C2 is the only square in row 6 that can be <4>
R6C9 is the only square in row 6 that can be <8>
R2C7 is the only square in column 7 that can be <8>
R5C7 is the only square in column 7 that can be <1>
Intersection of column 3 with block 1. The values <14> only appears in one or more of squares R1C3, R2C3 and R3C3 of column 3. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain these values.
   R1C1 - removing <1> from <128> leaving <28>
   R2C1 - removing <1> from <123> leaving <23>
   R3C2 - removing <1> from <1258> leaving <258>
Intersection of column 7 with block 9. The values <257> only appears in one or more of squares R7C7, R8C7 and R9C7 of column 7. These squares are the ones that intersect with block 9. Thus, the other (non-intersecting) squares of block 9 cannot contain these values.
   R7C8 - removing <57> from <5679> leaving <69>
   R8C9 - removing <27> from <23679> leaving <369>
   R9C9 - removing <27> from <2379> leaving <39>
Intersection of column 8 with block 6. The values <35> only appears in one or more of squares R4C8, R5C8 and R6C8 of column 8. These squares are the ones that intersect with block 6. Thus, the other (non-intersecting) squares of block 6 cannot contain these values.
   R4C9 - removing <3> from <37> leaving <7>
   R5C9 - removing <3> from <2379> leaving <279>
R4C5 can only be <6>
R5C2 is the only square in row 5 that can be <6>
R3C2 is the only square in column 2 that can be <2>
R3C9 can only be <1>
R1C1 can only be <8>
R2C1 can only be <3>
R3C5 can only be <7>
R3C8 can only be <4>
R2C4 can only be <4>
R3C3 can only be <5>
R3C6 can only be <8>
R1C8 can only be <2>
R6C8 can only be <9>
R2C9 can only be <6>
R2C3 can only be <1>
R1C4 can only be <9>
R5C4 can only be <7>
R2C8 can only be <7>
R5C6 can only be <4>
R6C1 can only be <2>
R7C8 can only be <6>
R5C9 can only be <2>
R1C5 can only be <1>
R7C4 can only be <8>
R1C3 can only be <4>
R7C5 can only be <9>
R2C6 can only be <2>
R8C6 can only be <7>
R8C4 can only be <6>
R9C5 can only be <2>
R9C6 can only be <1>
R9C7 can only be <7>
R9C2 can only be <3>
R7C7 can only be <5>
R7C2 can only be <1>
R8C7 can only be <2>
R9C9 can only be <9>
R8C3 can only be <9>
R8C9 can only be <3>
R7C1 can only be <7>
R4C2 can only be <5>
R8C1 can only be <5>
R5C3 can only be <3>
R4C1 can only be <1>
R4C8 can only be <3>
R8C2 can only be <8>
R5C1 can only be <9>
R5C8 can only be <5>


 

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