Daily Sudoku Answer 

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R4C2 can only be <9>

R9C1 can only be <8>

R4C6 can only be <1>

R4C5 can only be <4>

R2C6 is the only square in row 2 that can be <9>

R3C8 is the only square in row 3 that can be <9>

R5C5 is the only square in row 5 that can be <9>

R8C9 is the only square in row 8 that can be <2>

R8C1 is the only square in row 8 that can be <9>

R3C2 is the only square in column 2 that can be <8>

Squares R2C1 and R3C3 in block 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <17>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C1 - removing <7> from <57> leaving <5>

R1C2 - removing <7> from <3457> leaving <345>

R2C3 - removing <17> from <1347> leaving <34>

Squares R1C2 and R9C2 in column 2 form a simple naked pair. These 2 squares both contain the 2 possibilities <34>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R7C2 - removing <3> from <357> leaving <57>

Intersection of column 8 with block 9. The value <1> only appears in one or more of squares R7C8, R8C8 and R9C8 of column 8. 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 <1> from <138> leaving <38>

Intersection of block 2 with column 5. The value <6> only appears in one or more of squares R1C5, R2C5 and R3C5 of block 2. These squares are the ones that intersect with column 5. Thus, the other (non-intersecting) squares of column 5 cannot contain this value.

R6C5 - removing <6> from <3567> leaving <357>

R9C5 - removing <6> from <136> leaving <13>

Intersection of row 9 with block 9. The value <6> 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.

R8C7 - removing <6> from <346> leaving <34>

Squares R1C2 and R1C5 in row 1 and R9C2 and R9C5 in row 9 form a Simple X-Wing pattern on possibility <3>. All other instances of this possibility in columns 2 and 5 can be removed.

R6C5 - removing <3> from <357> leaving <57>

R7C5 - removing <3> from <135> leaving <15>

Squares R6C2 and R6C5 in row 6 form a simple naked pair. These 2 squares both contain the 2 possibilities <57>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R6C4 - removing <7> from <2367> leaving <236>

R6C6 - removing <5> from <356> leaving <36>

Squares R1C2 and R9C2 in column 2 and R1C8 and R9C8 in column 8 form a Simple X-Wing pattern on possibility <4>. All other instances of this possibility in rows 1 and 9 can be removed.

R1C9 - removing <4> from <467> leaving <67>

R9C9 - removing <4> from <46> leaving <6>

R1C9 can only be <7>

Squares R5C3 and R5C6 in row 5 and R8C3 and R8C6 in row 8 form a Simple X-Wing pattern on possibility <5>. All other instances of this possibility in columns 3 and 6 can be removed.

R7C3 - removing <5> from <357> leaving <37>

Squares R2C1 and R5C1 in column 1 and R2C4 and R5C4 in column 4 form a Simple X-Wing pattern on possibility <7>. All other instances of this possibility in rows 2 and 5 can be removed.

R5C3 - removing <7> from <157> leaving <15>

Squares R9C8 (XY), R9C5 (XZ) and R8C7 (YZ) form an XY-Wing pattern on <3>. All squares that are buddies of both the XZ and YZ squares cannot be <3>.

R8C4 - removing <3> from <36> leaving <6>

R8C6 - removing <3> from <356> leaving <56>

R8C6 can only be <5>

R5C6 can only be <6>

R7C5 can only be <1>

R6C6 can only be <3>

R6C4 can only be <2>

R7C8 can only be <8>

R9C5 can only be <3>

R7C7 can only be <3>

R4C8 can only be <2>

R9C2 can only be <4>

R1C5 can only be <6>

R1C8 can only be <4>

R3C5 can only be <7>

R1C2 can only be <3>

R9C8 can only be <1>

R2C9 can only be <8>

R2C7 can only be <1>

R5C9 can only be <4>

R3C3 can only be <1>

R6C5 can only be <5>

R2C4 can only be <3>

R4C4 can only be <8>

R6C8 can only be <6>

R5C7 can only be <8>

R6C2 can only be <7>

R7C3 can only be <7>

R8C7 can only be <4>

R8C3 can only be <3>

R2C3 can only be <4>

R2C1 can only be <7>

R3C7 can only be <6>

R5C3 can only be <5>

R5C4 can only be <7>

R5C1 can only be <1>

R7C2 can only be <5>

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