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Daily Sudoku Answer 



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Nov 07 - Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s024668



Reasoning 



R3C6 is the only square in row 3 that can be <4>

R4C2 is the only square in row 4 that can be <4>

R4C6 is the only square in row 4 that can be <6>

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

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

R6C4 is the only square in row 6 that can be <9>

R8C9 is the only square in row 8 that can be <8>

R9C8 is the only square in row 9 that can be <4>

R7C1 is the only square in row 7 that can be <4>

R7C2 is the only square in row 7 that can be <6>

R8C5 is the only square in row 8 that can be <4>

R4C5 is the only square in column 5 that can be <7>

R2C6 is the only square in column 6 that can be <5>

R6C6 is the only square in block 5 that can be <1>

R8C6 can only be <3>

R8C1 can only be <1>

R7C6 can only be <2>

R8C4 can only be <7>

R7C4 can only be <1>

R9C7 is the only square in row 9 that can be <1>

R7C8 is the only square in column 8 that can be <7>

Squares R2C1 and R3C1 in block 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <36>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C2 - removing <3> from <3589> leaving <589>

R1C3 - removing <3> from <359> leaving <59>

R2C2 - removing <3> from <1389> leaving <189>

R3C2 - removing <3> from <13578> leaving <1578>

R3C3 - removing <3> from <1357> leaving <157>

Squares R9C2 and R9C3 in block 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <37>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R7C3 - removing <3> from <359> leaving <59>

Squares R1C3 and R7C3 in column 3 form a simple naked pair. These 2 squares both contain the 2 possibilities <59>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C3 - removing <5> from <157> leaving <17>

Intersection of row 1 with block 3. The value <3> only appears in one or more of squares R1C7, R1C8 and R1C9 of row 1. These squares are the ones that intersect with block 3. Thus, the other (non-intersecting) squares of block 3 cannot contain this value.

R2C8 - removing <3> from <12369> leaving <1269>

R2C9 - removing <3> from <39> leaving <9>

R3C7 - removing <3> from <238> leaving <28>

R3C8 - removing <3> from <12356> leaving <1256>

R3C9 - removing <3> from <35> leaving <5>

R7C9 can only be <3>

R1C8 can only be <3>

R7C7 can only be <9>

R1C7 can only be <8>

R4C8 can only be <2>

R4C4 can only be <3>

R5C8 can only be <9>

R5C7 can only be <3>

R8C8 can only be <5>

R7C3 can only be <5>

R8C2 can only be <9>

R3C7 can only be <2>

R3C4 can only be <8>

R6C5 can only be <2>

R5C3 can only be <1>

R6C2 can only be <3>

R2C5 can only be <3>

R1C3 can only be <9>

R1C2 can only be <5>

R2C1 can only be <6>

R2C4 can only be <2>

R5C2 can only be <2>

R3C3 can only be <7>

R9C2 can only be <7>

R9C3 can only be <3>

R3C2 can only be <1>

R2C8 can only be <1>

R3C1 can only be <3>

R2C2 can only be <8>

R3C8 can only be <6>



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