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Daily Sudoku Answer 



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Jun 29 - Super Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s158382



Reasoning 



R3C5 can only be <1>

R4C4 can only be <6>

R4C5 can only be <9>

R4C6 can only be <8>

R5C3 can only be <3>

R5C4 can only be <2>

R5C7 can only be <9>

R6C4 can only be <1>

R6C6 can only be <3>

R7C5 can only be <5>

R6C5 can only be <7>

R5C6 can only be <5>

R5C5 can only be <4>

R7C7 can only be <4>

R3C7 can only be <3>

R9C1 is the only square in row 9 that can be <7>

Squares R9C3<15>, R9C7<25> and R9C8<125> in row 9 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <125>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R9C2 - removing <5> from <359> leaving <39>

R9C9 - removing <1> from <139> leaving <39>

Squares R8C1 and R9C2 in block 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <39>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R8C2 - removing <39> from <3589> leaving <58>

Squares R8C2 and R8C8 in row 8 form a simple naked pair. These 2 squares both contain the 2 possibilities <58>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R8C9 - removing <8> from <389> leaving <39>

Squares R2C2 and R2C8 in row 2 and R8C2 and R8C8 in row 8 form a Simple X-Wing pattern on possibility <5>. All other instances of this possibility in columns 2 and 8 can be removed.

R1C2 - removing <5> from <358> leaving <38>

R1C8 - removing <5> from <1258> leaving <128>

R9C8 - removing <5> from <125> leaving <12>

Squares R3C3 and R3C9 in row 3 and R7C3 and R7C9 in row 7 form a Simple X-Wing pattern on possibility <8>. All other instances of this possibility in columns 3 and 9 can be removed.

R1C3 - removing <8> from <158> leaving <15>

R1C9 - removing <8> from <148> leaving <14>

Squares R1C3 and R9C3 in column 3 form a simple naked pair. These 2 squares both contain the 2 possibilities <15>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R7C3 - removing <1> from <168> leaving <68>

Squares R2C8 (XY), R9C8 (XZ) and R1C7 (YZ) form an XY-Wing pattern on <2>. All squares that are buddies of both the XZ and YZ squares cannot be <2>.

R1C8 - removing <2> from <128> leaving <18>

R9C7 - removing <2> from <25> leaving <5>

R9C3 can only be <1>

R1C7 can only be <2>

R8C8 can only be <8>

R8C2 can only be <5>

R1C8 can only be <1>

R7C9 can only be <1>

R9C8 can only be <2>

R1C3 can only be <5>

R7C1 can only be <6>

R2C2 can only be <9>

R1C9 can only be <4>

R2C8 can only be <5>

R2C9 can only be <6>

R1C1 can only be <3>

R9C2 can only be <3>

R2C1 can only be <1>

R3C9 can only be <8>

R3C3 can only be <6>

R7C3 can only be <8>

R3C1 can only be <4>

R9C9 can only be <9>

R1C2 can only be <8>

R8C1 can only be <9>

R8C9 can only be <3>



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