Daily Sudoku Answer 

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R1C5 can only be <7>

R1C3 can only be <4>

R1C6 can only be <6>

R3C6 can only be <3>

R2C5 can only be <8>

R3C4 can only be <4>

R3C3 is the only square in row 3 that can be <8>

R4C7 is the only square in row 4 that can be <8>

R5C1 is the only square in row 5 that can be <4>

R5C4 is the only square in row 5 that can be <8>

R6C1 is the only square in row 6 that can be <1>

R6C9 is the only square in row 6 that can be <2>

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

R7C8 is the only square in row 7 that can be <2>

R7C6 is the only square in row 7 that can be <1>

R7C1 is the only square in row 7 that can be <8>

R8C3 is the only square in row 8 that can be <2>

R9C1 is the only square in column 1 that can be <9>

R7C7 is the only square in row 7 that can be <9>

R9C5 is the only square in row 9 that can be <5>

R8C5 can only be <3>

R7C4 can only be <7>

R7C2 can only be <3>

R6C4 can only be <3>

R9C4 can only be <6>

R4C3 is the only square in column 3 that can be <3>

Squares R8C1 and R8C2 in row 8 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.

R8C7 - removing <7> from <47> leaving <4>

R8C8 - removing <7> from <167> leaving <16>

R8C9 - removing <7> from <1467> leaving <146>

R2C9 is the only square in row 2 that can be <4>

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

Squares R2C3 and R6C3 in column 3 and R2C7 and R6C7 in column 7 form a Simple X-Wing pattern on possibility <5>. All other instances of this possibility in rows 2 and 6 can be removed.

R2C1 - removing <5> from <567> leaving <67>

R2C2 - removing <5> from <1567> leaving <167>

R2C8 - removing <5> from <1357> leaving <137>

Squares R9C7, R9C8, R2C7 and R2C8 form a Type-4 Unique Rectangle on <37>.

R2C7 - removing <7> from <357> leaving <35>

R2C8 - removing <7> from <137> leaving <13>

Intersection of row 2 with block 1. The values <67> only appears in one or more of squares R2C1, R2C2 and R2C3 of row 2. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain these values.

R3C2 - removing <7> from <579> leaving <59>

Squares R2C7 (XY), R9C7 (XZ) and R3C8 (YZ) form an XY-Wing pattern on <7>. All squares that are buddies of both the XZ and YZ squares cannot be <7>.

R9C8 - removing <7> from <37> leaving <3>

R9C7 can only be <7>

R2C8 can only be <1>

R8C8 can only be <6>

R1C9 can only be <9>

R8C9 can only be <1>

R6C7 can only be <5>

R1C2 can only be <1>

R3C9 can only be <7>

R3C8 can only be <5>

R4C9 can only be <6>

R6C3 can only be <7>

R2C7 can only be <3>

R5C8 can only be <7>

R3C2 can only be <9>

R5C6 can only be <5>

R2C3 can only be <5>

R4C1 can only be <5>

R4C6 can only be <7>

R8C1 can only be <7>

R5C2 can only be <6>

R2C2 can only be <7>

R8C2 can only be <5>

R2C1 can only be <6>

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