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Daily Sudoku Answer 



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May 27 - Very Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s084690



Reasoning 



R2C4 can only be <3>

R7C6 can only be <6>

R7C9 can only be <7>

R8C6 can only be <5>

R9C4 can only be <2>

R7C8 can only be <3>

R8C2 can only be <6>

R8C5 can only be <8>

R9C5 can only be <4>

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

R8C1 can only be <9>

R8C3 can only be <3>

R9C1 can only be <1>

R1C7 is the only square in row 1 that can be <3>

R5C5 is the only square in row 5 that can be <3>

R6C2 is the only square in row 6 that can be <8>

R5C8 is the only square in row 5 that can be <8>

R5C9 is the only square in row 5 that can be <5>

R2C9 can only be <4>

R5C2 is the only square in column 2 that can be <1>

R9C2 is the only square in column 2 that can be <7>

R9C3 can only be <5>

R4C5 is the only square in column 5 that can be <2>

Squares R4C4 and R4C9 in row 4 form a simple naked pair. These 2 squares both contain the 2 possibilities <69>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R4C3 - removing <9> from <479> leaving <47>

R4C7 - removing <69> from <14679> leaving <147>

R4C8 - removing <69> from <1679> leaving <17>

Squares R5C7 and R9C7 in column 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <69>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R6C7 - removing <69> from <14679> leaving <147>

Intersection of row 4 with block 6. The value <1> only appears in one or more of squares R4C7, R4C8 and R4C9 of row 4. These squares are the ones that intersect with block 6. Thus, the other (non-intersecting) squares of block 6 cannot contain this value.

R6C7 - removing <1> from <147> leaving <47>

Squares R3C4 and R9C8 form a remote naked pair. <69> can be removed from any square that is common to their groups.

R3C8 - removing <69> from <569> leaving <5>

R3C2 can only be <2>

R7C2 can only be <4>

R1C3 can only be <4>

R7C1 can only be <2>

R1C2 can only be <5>

R4C3 can only be <7>

R4C8 can only be <1>

R6C3 can only be <9>

R4C7 can only be <4>

R2C8 can only be <7>

R6C6 can only be <1>

R5C3 can only be <2>

R6C5 can only be <6>

R1C6 can only be <9>

R5C1 can only be <6>

R1C8 can only be <6>

R3C4 can only be <6>

R1C5 can only be <1>

R1C9 can only be <2>

R9C8 can only be <9>

R3C9 can only be <9>

R2C7 can only be <1>

R4C4 can only be <9>

R4C9 can only be <6>

R6C7 can only be <7>

R5C7 can only be <9>

R6C1 can only be <4>

R9C7 can only be <6>

R2C5 can only be <5>



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