Daily Sudoku Answer 

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R3C6 can only be <8>

R4C3 can only be <1>

R6C7 can only be <7>

R7C6 can only be <3>

R7C4 can only be <1>

R4C6 can only be <7>

R6C4 can only be <8>

R9C5 can only be <9>

R6C5 can only be <1>

R2C1 is the only square in row 2 that can be <7>

R2C3 is the only square in row 2 that can be <8>

R4C5 is the only square in row 4 that can be <2>

R7C8 is the only square in row 7 that can be <7>

R3C7 is the only square in column 7 that can be <9>

R8C7 is the only square in column 7 that can be <2>

Squares R1C5 and R1C9 in row 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <46>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R1C2 - removing <46> from <24569> leaving <259>

R1C8 - removing <4> from <245> leaving <25>

Squares R1C1 and R5C1 in column 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <59>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R8C1 - removing <9> from <389> leaving <38>

Squares R2C8<134>, R8C8<134> and R9C8<13> in column 8 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <134>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C8 - removing <4> from <245> leaving <25>

Squares R8C1, R9C1, R8C9 and R9C9 form a Type-4 Unique Rectangle on <38>.

R8C9 - removing <3> from <1348> leaving <148>

R9C9 - removing <3> from <1368> leaving <168>

Intersection of block 9 with column 8. The value <3> only appears in one or more of squares R7C8, R8C8 and R9C8 of block 9. These squares are the ones that intersect with column 8. Thus, the other (non-intersecting) squares of column 8 cannot contain this value.

R2C8 - removing <3> from <134> leaving <14>

Squares R1C8, R3C8, R1C2 and R3C2 form a Type-3 Unique Rectangle on <25>. Upon close inspection, it is clear that:

(R1C2 or R3C2)<469>, R9C2<16>, R8C2<149> and R2C2<46> form a naked quad on <1469> in column 2. No other squares in the column can contain these possibilities

R7C2 - removing <46> from <456> leaving <5>

Squares R2C2 (XY), R2C8 (XZ) and R9C2 (YZ) form an XY-Wing pattern on <1>. All squares that are buddies of both the XZ and YZ squares cannot be <1>.

R9C8 - removing <1> from <13> leaving <3>

R9C1 can only be <8>

R8C1 can only be <3>

R8C9 is the only square in row 8 that can be <8>

Squares R1C9 (XY), R2C8 (XZ) and R9C9 (YZ) form an XY-Wing pattern on <1>. All squares that are buddies of both the XZ and YZ squares cannot be <1>.

R2C9 - removing <1> from <1346> leaving <346>

R8C8 - removing <1> from <14> leaving <4>

R8C3 can only be <9>

R2C8 can only be <1>

R7C7 can only be <6>

R7C3 can only be <4>

R9C9 can only be <1>

R8C2 can only be <1>

R6C3 can only be <5>

R9C2 can only be <6>

R6C6 can only be <9>

R5C1 can only be <9>

R5C6 can only be <5>

R3C3 can only be <6>

R2C2 can only be <4>

R2C7 can only be <3>

R3C2 can only be <2>

R2C9 can only be <6>

R4C7 can only be <4>

R1C9 can only be <4>

R3C8 can only be <5>

R1C2 can only be <9>

R3C4 can only be <4>

R4C4 can only be <3>

R1C5 can only be <6>

R1C8 can only be <2>

R5C4 can only be <6>

R5C9 can only be <3>

R1C1 can only be <5>

R5C5 can only be <4>

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