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Daily Sudoku Answer 



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Dec 06 - Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s030401



Reasoning 



R1C8 can only be <9>

R9C8 can only be <6>

R9C9 can only be <3>

R8C9 can only be <8>

R7C7 can only be <2>

R2C4 is the only square in row 2 that can be <1>

R1C2 is the only square in row 1 that can be <1>

R2C5 is the only square in row 2 that can be <2>

R2C9 is the only square in row 2 that can be <7>

R7C3 is the only square in column 3 that can be <5>

R7C5 can only be <3>

R7C4 can only be <8>

R7C6 can only be <7>

R3C6 is the only square in row 3 that can be <8>

R1C1 is the only square in row 1 that can be <8>

R8C1 is the only square in row 8 that can be <7>

R8C4 is the only square in row 8 that can be <2>

Squares R9C1 and R9C2 in row 9 form a simple naked pair. These 2 squares both contain the 2 possibilities <24>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R9C6 - removing <4> from <459> leaving <59>

Squares R2C6 and R8C6 in column 6 form a simple naked pair. These 2 squares both contain the 2 possibilities <46>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R1C6 - removing <4> from <345> leaving <35>

R5C6 - removing <6> from <369> leaving <39>

R1C9 is the only square in row 1 that can be <4>

R3C7 can only be <5>

Intersection of block 5 with row 5. The value <3> only appears in one or more of squares R5C4, R5C5 and R5C6 of block 5. These squares are the ones that intersect with row 5. Thus, the other (non-intersecting) squares of row 5 cannot contain this value.

R5C2 - removing <3> from <34> leaving <4>

R5C7 - removing <3> from <349> leaving <49>

R5C7 can only be <9>

R9C2 can only be <2>

R5C6 can only be <3>

R6C7 can only be <3>

R4C7 can only be <4>

R9C1 can only be <4>

R6C2 can only be <8>

R5C4 can only be <6>

R1C6 can only be <5>

R6C8 can only be <7>

R4C2 can only be <3>

R6C3 can only be <6>

R5C8 can only be <1>

R2C1 can only be <6>

R1C4 can only be <3>

R9C6 can only be <9>

R2C6 can only be <4>

R4C1 can only be <9>

R3C3 can only be <4>

R8C6 can only be <6>

R6C1 can only be <2>

R3C4 can only be <9>

R4C5 can only be <5>

R5C3 can only be <7>

R4C8 can only be <8>

R6C9 can only be <5>

R4C3 can only be <1>

R6C5 can only be <9>

R4C9 can only be <6>

R8C5 can only be <4>

R9C4 can only be <5>

R3C5 can only be <6>



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