Daily Sudoku Answer 

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R5C5 can only be <5>

R6C8 can only be <1>

R4C7 can only be <3>

R5C8 can only be <6>

R5C9 can only be <9>

R4C8 can only be <7>

R5C1 can only be <3>

R5C2 can only be <2>

R6C7 can only be <2>

R6C3 can only be <9>

R6C2 can only be <5>

R9C3 can only be <8>

R9C2 is the only square in row 9 that can be <7>

R3C3 is the only square in column 3 that can be <2>

R2C5 is the only square in column 5 that can be <1>

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

R8C5 is the only square in row 8 that can be <2>

Squares R7C1 and R8C1 in column 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <69>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R2C1 - removing <9> from <579> leaving <57>

R3C1 - removing <6> from <567> leaving <57>

Squares R7C1 and R8C1 in block 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <69>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R7C3 - removing <6> from <146> leaving <14>

R8C2 - removing <69> from <1469> leaving <14>

Intersection of row 1 with block 3. The value <5> 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 <5> from <458> leaving <48>

R3C7 - removing <5> from <15> leaving <1>

Intersection of row 9 with block 9. The value <5> only appears in one or more of squares R9C7, R9C8 and R9C9 of row 9. These squares are the ones that intersect with block 9. Thus, the other (non-intersecting) squares of block 9 cannot contain this value.

R7C7 - removing <5> from <459> leaving <49>

Squares R1C5 and R1C8 in row 1 and R9C5 and R9C8 in row 9 form a Simple X-Wing pattern on possibility <3>. All other instances of this possibility in columns 5 and 8 can be removed.

R8C8 - removing <3> from <348> leaving <48>

Squares R2C8 and R8C8 in column 8 form a simple naked pair. These 2 squares both contain the 2 possibilities <48>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R1C8 - removing <4> from <345> leaving <35>

Squares R2C2 and R2C8 in row 2 and R8C2 and R8C8 in row 8 form a Simple X-Wing pattern on possibility <4>. All other instances of this possibility in columns 2 and 8 can be removed.

R1C2 - removing <4> from <469> leaving <69>

Squares R7C9 (XY), R7C3 (XZ) and R8C8 (YZ) form an XY-Wing pattern on <4>. All squares that are buddies of both the XZ and YZ squares cannot be <4>.

R8C2 - removing <4> from <14> leaving <1>

R7C7 - removing <4> from <49> leaving <9>

R7C1 can only be <6>

R9C7 can only be <5>

R4C2 can only be <6>

R7C3 can only be <4>

R9C8 can only be <3>

R1C7 can only be <4>

R9C5 can only be <9>

R1C8 can only be <5>

R8C9 can only be <8>

R1C3 can only be <6>

R2C8 can only be <8>

R2C9 can only be <7>

R8C8 can only be <4>

R2C1 can only be <5>

R3C9 can only be <3>

R4C3 can only be <1>

R1C2 can only be <9>

R7C6 can only be <5>

R8C1 can only be <9>

R7C4 can only be <8>

R2C6 can only be <9>

R3C6 can only be <6>

R8C4 can only be <6>

R7C9 can only be <1>

R1C5 can only be <3>

R2C2 can only be <4>

R3C1 can only be <7>

R3C4 can only be <5>

R8C6 can only be <3>

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