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Daily Sudoku Answer 



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Feb 21 - Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s038894



Reasoning 



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

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

R4C8 is the only square in row 4 that can be <1>

R4C9 is the only square in row 4 that can be <3>

R5C6 is the only square in row 5 that can be <3>

R6C2 is the only square in row 6 that can be <4>

R7C1 is the only square in row 7 that can be <3>

R8C6 is the only square in row 8 that can be <9>

R6C9 is the only square in row 6 that can be <9>

R8C1 is the only square in row 8 that can be <6>

R4C3 is the only square in row 4 that can be <6>

R5C8 is the only square in row 5 that can be <6>

R2C9 is the only square in row 2 that can be <6>

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

R1C6 is the only square in column 6 that can be <8>

R4C1 is the only square in column 1 that can be <8>

R5C4 is the only square in row 5 that can be <8>

R1C3 is the only square in block 1 that can be <9>

Squares R5C7 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.

R9C7 - removing <5> from <145> leaving <14>

Squares R2C8 and R3C9 in block 3 form a simple naked pair. These 2 squares both contain the 2 possibilities <25>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C8 - removing <25> from <2457> leaving <47>

R3C8 - removing <25> from <2457> leaving <47>

R2C8 is the only square in column 8 that can be <5>

R3C9 can only be <2>

R8C8 is the only square in column 8 that can be <2>

R8C2 can only be <1>

R8C7 can only be <4>

R9C7 can only be <1>

R7C6 is the only square in row 7 that can be <1>

Squares R2C2 and R2C3 in block 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <28>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C1 - removing <2> from <257> leaving <57>

R6C1 is the only square in column 1 that can be <2>

R6C6 can only be <5>

R5C3 can only be <7>

R6C7 can only be <7>

R3C6 can only be <6>

R4C4 can only be <9>

R5C7 can only be <5>

R9C6 can only be <2>

R4C2 can only be <5>

R5C5 can only be <2>

R7C5 can only be <5>

R5C2 can only be <9>

R7C9 can only be <8>

R1C5 can only be <4>

R9C9 can only be <5>

R9C3 can only be <8>

R7C4 can only be <7>

R1C8 can only be <7>

R3C5 can only be <9>

R9C5 can only be <6>

R3C4 can only be <5>

R1C1 can only be <5>

R3C8 can only be <4>

R3C1 can only be <7>

R1C4 can only be <2>

R7C2 can only be <2>

R9C4 can only be <4>

R9C2 can only be <7>

R2C3 can only be <2>

R2C2 can only be <8>



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