Daily Sudoku Answer 

The full reasoning can be found below the Sudoku.

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R1C2 is the only square in row 1 that can be <5>

R3C7 is the only square in row 3 that can be <4>

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

R4C1 is the only square in row 4 that can be <2>

R7C4 is the only square in row 7 that can be <4>

R8C2 is the only square in row 8 that can be <4>

R3C5 is the only square in column 5 that can be <9>

R7C7 is the only square in column 7 that can be <6>

R5C8 is the only square in column 8 that can be <1>

R5C9 is the only square in row 5 that can be <2>

R3C6 is the only square in row 3 that can be <2>

R2C8 is the only square in row 2 that can be <2>

R3C4 is the only square in row 3 that can be <1>

R7C5 is the only square in row 7 that can be <2>

R6C2 is the only square in column 2 that can be <1>

R4C5 is the only square in row 4 that can be <1>

R5C2 is the only square in column 2 that can be <9>

R8C5 is the only square in column 5 that can be <5>

R7C9 is the only square in block 9 that can be <5>

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

Squares R9C3 and R9C8 in row 9 form a simple naked pair. These 2 squares both contain the 2 possibilities <89>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R9C4 - removing <8> from <368> leaving <36>

R9C6 - removing <8> from <368> leaving <36>

Squares R7C6 and R8C6 in column 6 form a simple naked pair. These 2 squares both contain the 2 possibilities <18>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R1C6 - removing <8> from <378> leaving <37>

R6C6 - removing <8> from <678> leaving <67>

Squares R2C2 and R3C2 in block 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <67>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R3C1 - removing <7> from <378> leaving <38>

R3C3 - removing <67> from <3678> leaving <38>

R3C2 is the only square in row 3 that can be <6>

R2C2 can only be <7>

R3C9 is the only square in row 3 that can be <7>

Intersection of column 4 with block 2. The value <8> only appears in one or more of squares R1C4, R2C4 and R3C4 of column 4. These squares are the ones that intersect with block 2. Thus, the other (non-intersecting) squares of block 2 cannot contain this value.

R2C5 - removing <8> from <368> leaving <36>

Squares R9C3, R9C8, R7C3 and R7C8 form a Type-4 Unique Rectangle on <89>.

R7C3 - removing <8> from <1789> leaving <179>

R7C8 - removing <8> from <789> leaving <79>

Squares R1C9, R6C9, R1C7 and R6C7 form a Type-4 Unique Rectangle on <89>.

R1C7 - removing <8> from <389> leaving <39>

R6C7 - removing <8> from <5789> leaving <579>

Squares R1C6 (XY), R2C5 (XZ) and R6C6 (YZ) form an XY-Wing pattern on <6>. All squares that are buddies of both the XZ and YZ squares cannot be <6>.

R6C5 - removing <6> from <68> leaving <8>

R5C5 - removing <6> from <368> leaving <38>

R6C9 can only be <9>

R5C5 can only be <3>

R1C9 can only be <8>

R2C7 can only be <3>

R2C5 can only be <6>

R1C7 can only be <9>

R5C1 can only be <7>

R4C4 can only be <7>

R2C4 can only be <8>

R4C7 can only be <5>

R1C4 can only be <3>

R6C6 can only be <6>

R4C3 can only be <3>

R6C7 can only be <7>

R5C3 can only be <6>

R5C7 can only be <8>

R7C1 can only be <8>

R6C3 can only be <5>

R9C6 can only be <3>

R7C6 can only be <1>

R3C1 can only be <3>

R9C3 can only be <9>

R8C6 can only be <8>

R8C8 can only be <7>

R8C3 can only be <1>

R7C8 can only be <9>

R9C8 can only be <8>

R7C3 can only be <7>

R9C4 can only be <6>

R1C6 can only be <7>

R3C3 can only be <8>

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