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Daily Sudoku Answer 



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Jun 11 - Hard
Puzzle Copyright © Kevin Stone

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Reasoning 



R3C1 is the only square in row 3 that can be <1>

R4C5 is the only square in row 4 that can be <1>

R7C7 is the only square in row 7 that can be <1>

R7C5 is the only square in row 7 that can be <5>

R9C3 is the only square in column 3 that can be <8>

R1C7 is the only square in column 7 that can be <5>

R6C8 is the only square in column 8 that can be <6>

R1C8 is the only square in column 8 that can be <9>

Intersection of row 7 with block 9. The value <8> only appears in one or more of squares R7C7, R7C8 and R7C9 of row 7. These squares are the ones that intersect with block 9. Thus, the other (non-intersecting) squares of block 9 cannot contain this value.

R8C7 - removing <8> from <3789> leaving <379>

R8C9 - removing <8> from <3489> leaving <349>

Intersection of column 3 with block 1. The value <7> 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 this value.

R3C2 - removing <7> from <2357> leaving <235>

Intersection of column 3 with block 4. The value <4> only appears in one or more of squares R4C3, R5C3 and R6C3 of column 3. These squares are the ones that intersect with block 4. Thus, the other (non-intersecting) squares of block 4 cannot contain this value.

R5C1 - removing <4> from <2346> leaving <236>

Intersection of column 5 with block 2. The value <6> only appears in one or more of squares R1C5, R2C5 and R3C5 of column 5. These squares are the ones that intersect with block 2. Thus, the other (non-intersecting) squares of block 2 cannot contain this value.

R1C4 - removing <6> from <367> leaving <37>

Intersection of column 7 with block 6. The values <28> only appears in one or more of squares R4C7, R5C7 and R6C7 of column 7. These squares are the ones that intersect with block 6. Thus, the other (non-intersecting) squares of block 6 cannot contain these values.

R5C9 - removing <2> from <239> leaving <39>

Intersection of column 7 with block 9. The value <7> 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 this value.

R7C8 - removing <7> from <78> leaving <8>

R7C9 can only be <4>

R7C1 can only be <6>

R7C2 can only be <7>

R8C2 can only be <3>

R8C9 can only be <9>

R9C2 can only be <2>

R8C7 can only be <7>

R5C9 can only be <3>

R9C1 can only be <4>

R3C2 can only be <5>

R4C2 can only be <6>

R5C1 can only be <2>

R1C9 can only be <2>

R8C4 can only be <8>

R9C7 can only be <3>

R9C5 can only be <9>

R9C6 can only be <7>

R3C9 can only be <8>

R5C7 can only be <9>

R2C1 can only be <3>

R5C4 can only be <6>

R8C5 can only be <4>

R4C4 can only be <3>

R2C8 can only be <7>

R3C8 can only be <3>

R3C5 can only be <2>

R4C3 can only be <5>

R1C4 can only be <7>

R6C4 can only be <9>

R1C3 can only be <6>

R3C3 can only be <7>

R6C5 can only be <8>

R2C6 can only be <8>

R5C3 can only be <4>

R5C6 can only be <5>

R6C3 can only be <3>

R6C7 can only be <2>

R2C5 can only be <6>

R4C6 can only be <2>

R6C6 can only be <4>

R4C7 can only be <8>

R1C5 can only be <3>

R2C3 can only be <2>



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