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Daily Sudoku Answer 



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Nov 17 - Very Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s189415



Reasoning 



R5C2 can only be <5>

R6C3 can only be <9>

R5C8 can only be <2>

R5C9 can only be <4>

R1C1 is the only square in row 1 that can be <9>

R2C9 is the only square in row 2 that can be <8>

R5C4 is the only square in row 5 that can be <9>

R6C4 is the only square in row 6 that can be <1>

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

R5C6 is the only square in row 5 that can be <8>

Squares R7C6 and R7C9 in row 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <35>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R7C1 - removing <3> from <23> leaving <2>

R7C3 - removing <3> from <2348> leaving <248>

R7C4 - removing <35> from <356> leaving <6>

R7C7 - removing <35> from <34568> leaving <468>

R2C1 can only be <5>

R2C5 can only be <2>

R4C6 is the only square in row 4 that can be <2>

Squares R4C7 and R6C7 in column 7 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 column.

R1C7 - removing <57> from <3567> leaving <36>

R3C7 - removing <57> from <3567> leaving <36>

R9C7 - removing <5> from <34568> leaving <3468>

Squares R1C7 and R3C7 in column 7 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 column.

R9C7 - removing <36> from <3468> leaving <48>

R9C8 is the only square in row 9 that can be <6>

R1C8 can only be <5>

Squares R1C7 and R3C7 in block 3 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.

R1C9 - removing <3> from <237> leaving <27>

R3C9 - removing <3> from <237> leaving <27>

Squares R7C3, R7C7, R9C3 and R9C7 form a Type-1 Unique Rectangle on <48>.

R9C3 - removing <48> from <348> leaving <3>

R9C5 can only be <5>

R4C3 can only be <6>

R8C1 can only be <1>

R9C9 can only be <1>

R7C6 can only be <3>

R9C1 can only be <7>

R8C9 can only be <3>

R5C1 can only be <3>

R5C5 can only be <6>

R7C9 can only be <5>

R9C2 can only be <4>

R3C1 can only be <6>

R9C7 can only be <8>

R1C2 can only be <7>

R7C3 can only be <8>

R7C7 can only be <4>

R1C9 can only be <2>

R1C3 can only be <4>

R3C9 can only be <7>

R3C7 can only be <3>

R3C4 can only be <5>

R1C7 can only be <6>

R1C5 can only be <3>

R3C3 can only be <2>

R4C5 can only be <7>

R3C6 can only be <4>

R4C4 can only be <3>

R6C6 can only be <5>

R4C7 can only be <5>

R6C5 can only be <4>

R6C7 can only be <7>



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