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Daily Sudoku Answer 



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Mar 26 - Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s085142



Reasoning 



R4C1 can only be <8>

R8C2 can only be <1>

R8C5 can only be <6>

R5C5 is the only square in row 5 that can be <8>

R7C8 is the only square in row 7 that can be <6>

R8C3 is the only square in row 8 that can be <4>

R9C1 is the only square in column 1 that can be <5>

Squares R4C6 and R9C6 in column 6 form a simple naked pair. These 2 squares both contain the 2 possibilities <79>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R5C6 - removing <9> from <2469> leaving <246>

R6C6 - removing <9> from <2469> leaving <246>

Squares R8C7 and R8C8 in block 9 form a simple naked pair. These 2 squares both contain the 2 possibilities <57>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R7C7 - removing <7> from <1789> leaving <189>

R9C7 - removing <7> from <1789> leaving <189>

Intersection of row 3 with block 1. The value <6> only appears in one or more of squares R3C1, R3C2 and R3C3 of row 3. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.

R1C1 - removing <6> from <246> leaving <24>

R1C3 - removing <6> from <23689> leaving <2389>

Intersection of row 7 with block 7. The values <27> only appears in one or more of squares R7C1, R7C2 and R7C3 of row 7. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain these values.

R9C3 - removing <7> from <378> leaving <38>

Intersection of column 4 with block 5. The value <5> only appears in one or more of squares R4C4, R5C4 and R6C4 of column 4. These squares are the ones that intersect with block 5. Thus, the other (non-intersecting) squares of block 5 cannot contain this value.

R6C5 - removing <5> from <459> leaving <49>

Intersection of column 8 with block 3. The value <3> only appears in one or more of squares R1C8, R2C8 and R3C8 of column 8. These squares are the ones that intersect with block 3. Thus, the other (non-intersecting) squares of block 3 cannot contain this value.

R1C9 - removing <3> from <3489> leaving <489>

R3C9 - removing <3> from <3458> leaving <458>

Intersection of block 4 with row 5. The value <9> only appears in one or more of squares R5C1, R5C2 and R5C3 of block 4. These squares are the ones that intersect with row 5. Thus, the other (non-intersecting) squares of row 5 cannot contain this value.

R5C7 - removing <9> from <1459> leaving <145>

R5C8 - removing <9> from <59> leaving <5>

R8C8 can only be <7>

R8C7 can only be <5>

R3C8 can only be <3>

R2C8 can only be <9>

R2C2 can only be <3>

R2C3 can only be <7>

R2C7 can only be <4>

R2C5 can only be <5>

R5C7 can only be <1>

R1C9 can only be <8>

R5C4 can only be <6>

R4C9 can only be <9>

R1C7 can only be <2>

R3C9 can only be <5>

R3C5 can only be <4>

R6C5 can only be <9>

R1C6 can only be <6>

R4C6 can only be <7>

R6C9 can only be <4>

R1C4 can only be <3>

R6C4 can only be <5>

R7C5 can only be <1>

R6C6 can only be <2>

R7C9 can only be <3>

R4C5 can only be <3>

R9C4 can only be <7>

R9C9 can only be <1>

R9C6 can only be <9>

R9C7 can only be <8>

R9C3 can only be <3>

R7C7 can only be <9>

R4C4 can only be <1>

R1C1 can only be <4>

R1C3 can only be <9>

R3C7 can only be <7>

R6C1 can only be <6>

R5C6 can only be <4>

R5C3 can only be <2>

R5C2 can only be <9>

R7C3 can only be <8>

R3C1 can only be <2>

R7C2 can only be <2>

R3C3 can only be <6>

R3C2 can only be <8>

R7C1 can only be <7>



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