Daily Sudoku Answer 

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R7C6 can only be <2>

R3C4 is the only square in row 3 that can be <2>

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

R3C9 is the only square in row 3 that can be <8>

R4C9 is the only square in row 4 that can be <5>

R2C8 is the only square in row 2 that can be <5>

R4C5 is the only square in row 4 that can be <9>

R6C1 is the only square in row 6 that can be <5>

R6C4 is the only square in row 6 that can be <6>

R5C1 is the only square in column 1 that can be <8>

R5C5 is the only square in column 5 that can be <2>

R9C8 is the only square in column 8 that can be <8>

R5C9 is the only square in column 9 that can be <3>

R5C2 can only be <1>

R5C8 can only be <9>

R3C2 can only be <4>

R7C8 can only be <6>

R3C1 can only be <1>

R4C6 is the only square in row 4 that can be <1>

R4C4 is the only square in row 4 that can be <4>

R2C6 is the only square in row 2 that can be <4>

R8C1 is the only square in row 8 that can be <4>

Squares R4C2 and R9C2 in column 2 form a simple naked pair. These 2 squares both contain the 2 possibilities <23>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R1C2 - removing <3> from <369> leaving <69>

R8C2 - removing <3> from <369> leaving <69>

Squares R1C2<69>, R1C7<149>, R1C8<14> and R1C9<169> in row 1 form a comprehensive naked quad. These 4 squares can only contain the 4 possibilities <1469>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R1C3 - removing <6> from <367> leaving <37>

R1C5 - removing <1> from <137> leaving <37>

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

Squares R2C1 and R2C9 in row 2 and R7C1 and R7C9 in row 7 form a Simple X-Wing pattern on possibility <9>. All other instances of this possibility in columns 1 and 9 can be removed.

R1C9 - removing <9> from <169> leaving <16>

R8C9 - removing <9> from <179> leaving <17>

Squares R1C3 and R8C4 form a remote naked pair. <37> can be removed from any square that is common to their groups.

R8C3 - removing <37> from <1367> leaving <16>

Intersection of row 8 with block 8. The values <38> only appears in one or more of squares R8C4, R8C5 and R8C6 of row 8. These squares are the ones that intersect with block 8. Thus, the other (non-intersecting) squares of block 8 cannot contain these values.

R9C5 - removing <3> from <357> leaving <57>

Squares R4C2, R4C3, R9C2 and R9C3 form a Type-1 Unique Rectangle on <23>.

R9C3 - removing <23> from <1237> leaving <17>

R9C2 is the only square in row 9 that can be <2>

R4C2 can only be <3>

R4C3 can only be <2>

R9C1 is the only square in row 9 that can be <3>

Squares R1C3 and R1C5 in row 1 and R9C3 and R9C5 in row 9 form a Simple X-Wing pattern on possibility <7>. All other instances of this possibility in columns 3 and 5 can be removed.

R2C3 - removing <7> from <367> leaving <36>

R8C5 - removing <7> from <3578> leaving <358>

Squares R6C5, R6C6, R8C5 and R8C6 form a Type-1 Unique Rectangle on <38>.

R8C5 - removing <38> from <358> leaving <5>

R9C5 can only be <7>

R9C3 can only be <1>

R1C5 can only be <3>

R8C4 can only be <3>

R1C3 can only be <7>

R6C5 can only be <8>

R2C4 can only be <7>

R2C1 can only be <9>

R6C6 can only be <3>

R8C6 can only be <8>

R9C7 can only be <5>

R8C3 can only be <6>

R2C9 can only be <6>

R7C1 can only be <7>

R1C2 can only be <6>

R2C3 can only be <3>

R1C9 can only be <1>

R7C9 can only be <9>

R8C7 can only be <1>

R8C2 can only be <9>

R8C9 can only be <7>

R6C7 can only be <4>

R1C8 can only be <4>

R6C8 can only be <1>

R1C7 can only be <9>

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