Daily Sudoku Answer 

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R5C5 can only be <9>

R4C8 is the only square in row 4 that can be <7>

R7C9 is the only square in row 7 that can be <5>

R1C7 is the only square in row 1 that can be <5>

R3C2 is the only square in row 3 that can be <5>

R9C4 is the only square in row 9 that can be <5>

R1C5 is the only square in column 5 that can be <8>

R6C8 is the only square in column 8 that can be <9>

R9C9 is the only square in column 9 that can be <1>

R9C5 can only be <6>

R8C6 can only be <2>

R9C6 can only be <9>

R9C3 can only be <7>

R9C1 can only be <8>

R9C7 can only be <2>

R1C1 is the only square in row 1 that can be <7>

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

R2C7 is the only square in row 2 that can be <8>

R8C8 is the only square in row 8 that can be <8>

Intersection of column 3 with block 1. The value <9> only appears in one or more of squares R1C3, R2C3 and R3C3 of column 3. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.

R2C2 - removing <9> from <1369> leaving <136>

Squares R2C3 and R8C3 in column 3 and R2C4 and R8C4 in column 4 form a Simple X-Wing pattern on possibility <1>. All other instances of this possibility in rows 2 and 8 can be removed.

R2C2 - removing <1> from <136> leaving <36>

R8C2 - removing <1> from <136> leaving <36>

Squares R2C2 and R2C6 in row 2 form a simple naked pair. These 2 squares both contain the 2 possibilities <36>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R2C3 - removing <36> from <1369> leaving <19>

Squares R2C2 and R8C2 in column 2 form a simple naked pair. These 2 squares both contain the 2 possibilities <36>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R6C2 - removing <6> from <168> leaving <18>

R7C2 - removing <6> from <169> leaving <19>

Squares R3C5 and R7C5 in column 5 and R3C8 and R7C8 in column 8 form a Simple X-Wing pattern on possibility <4>. All other instances of this possibility in rows 3 and 7 can be removed.

R3C9 - removing <4> from <346> leaving <36>

Squares R3C1, R3C8 and R3C9 in row 3, R6C1 and R6C9 in row 6 and R7C1 and R7C8 in row 7 form a Swordfish pattern on possibility <6>. All other instances of this possibility in columns 1, 8 and 9 can be removed.

R1C9 - removing <6> from <346> leaving <34>

R5C1 - removing <6> from <236> leaving <23>

R5C9 - removing <6> from <246> leaving <24>

Intersection of block 3 with row 3. The value <6> only appears in one or more of squares R3C7, R3C8 and R3C9 of block 3. These squares are the ones that intersect with row 3. Thus, the other (non-intersecting) squares of row 3 cannot contain this value.

R3C1 - removing <6> from <136> leaving <13>

Squares R3C1 (XY), R6C1 (XZ) and R3C9 (YZ) form an XY-Wing pattern on <6>. All squares that are buddies of both the XZ and YZ squares cannot be <6>.

R6C9 - removing <6> from <68> leaving <8>

R6C2 can only be <1>

R4C9 can only be <2>

R4C1 can only be <9>

R5C9 can only be <4>

R5C7 can only be <6>

R1C9 can only be <3>

R6C1 can only be <6>

R7C2 can only be <9>

R4C2 can only be <8>

R1C6 can only be <6>

R3C9 can only be <6>

R3C8 can only be <4>

R5C3 can only be <3>

R8C7 can only be <4>

R7C1 can only be <1>

R7C5 can only be <4>

R3C1 can only be <3>

R7C8 can only be <6>

R3C5 can only be <1>

R8C4 can only be <1>

R2C4 can only be <9>

R1C3 can only be <9>

R2C6 can only be <3>

R2C3 can only be <1>

R1C4 can only be <4>

R2C2 can only be <6>

R5C1 can only be <2>

R8C3 can only be <6>

R8C2 can only be <3>

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