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Daily Sudoku Answer 



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Jun 02 - Very Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s079989



Reasoning 



R5C5 can only be <3>

R8C6 can only be <3>

R9C1 is the only square in column 1 that can be <5>

R9C9 can only be <3>

R8C3 can only be <4>

R8C7 can only be <5>

R7C9 can only be <1>

R3C1 is the only square in column 1 that can be <9>

R2C7 is the only square in row 2 that can be <9>

Squares R4C5 and R6C5 in column 5 form a simple naked pair. These 2 squares both contain the 2 possibilities <68>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R7C5 - removing <8> from <458> leaving <45>

Squares R1C1 and R2C3 in block 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <23>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C2 - removing <23> from <23467> leaving <467>

R1C3 - removing <23> from <2367> leaving <67>

R3C2 - removing <23> from <2346> leaving <46>

Squares R4C5 and R6C5 in block 5 form a simple naked pair. These 2 squares both contain the 2 possibilities <68>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R4C4 - removing <8> from <128> leaving <12>

R6C6 - removing <8> from <128> leaving <12>

Squares R3C6 and R6C6 in column 6 form a simple naked pair. These 2 squares both contain the 2 possibilities <12>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R1C6 - removing <12> from <128> leaving <8>

Squares R2C3<23>, R7C3<39> and R9C3<29> in column 3 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <239>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R4C3 - removing <23> from <12367> leaving <167>

R5C3 - removing <2> from <1257> leaving <157>

R6C3 - removing <239> from <123569> leaving <156>

R6C2 is the only square in row 6 that can be <9>

Intersection of row 6 with block 6. The value <3> only appears in one or more of squares R6C7, R6C8 and R6C9 of row 6. These squares are the ones that intersect with block 6. Thus, the other (non-intersecting) squares of block 6 cannot contain this value.

R4C7 - removing <3> from <13478> leaving <1478>

R4C8 - removing <3> from <12347> leaving <1247>

Squares R2C4 and R4C1 form a remote naked pair. <23> can be removed from any square that is common to their groups.

R4C4 - removing <2> from <12> leaving <1>

R6C6 can only be <2>

R6C9 can only be <5>

R3C6 can only be <1>

R1C9 can only be <2>

R1C1 can only be <3>

R4C1 can only be <2>

R2C3 can only be <2>

R2C4 can only be <3>

R9C3 can only be <9>

R5C2 can only be <7>

R5C7 can only be <1>

R4C3 can only be <6>

R5C3 can only be <5>

R5C8 can only be <2>

R1C7 can only be <6>

R6C8 can only be <3>

R6C7 can only be <8>

R9C6 can only be <7>

R7C3 can only be <3>

R7C6 can only be <9>

R1C2 can only be <4>

R1C3 can only be <7>

R3C7 can only be <3>

R9C7 can only be <4>

R3C8 can only be <5>

R3C5 can only be <4>

R1C8 can only be <1>

R4C2 can only be <3>

R4C5 can only be <8>

R6C3 can only be <1>

R6C5 can only be <6>

R7C2 can only be <8>

R9C4 can only be <8>

R9C8 can only be <6>

R4C7 can only be <7>

R7C8 can only be <7>

R1C4 can only be <5>

R3C2 can only be <6>

R3C4 can only be <2>

R7C5 can only be <5>

R4C8 can only be <4>

R7C4 can only be <4>

R9C2 can only be <2>



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