Daily Sudoku Answer 

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R4C7 can only be <4>

R5C1 can only be <4>

R4C3 can only be <5>

R6C3 can only be <7>

R3C3 is the only square in row 3 that can be <4>

R5C4 is the only square in row 5 that can be <6>

R5C6 is the only square in row 5 that can be <7>

R6C6 is the only square in row 6 that can be <5>

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

R6C4 can only be <1>

R6C7 can only be <8>

R5C5 can only be <8>

R6C5 can only be <4>

R5C9 can only be <1>

R8C2 is the only square in column 2 that can be <7>

R8C7 is the only square in row 8 that can be <2>

R1C3 is the only square in column 3 that can be <6>

Squares R1C5 and R1C7 in row 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <13>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R1C1 - removing <3> from <235> leaving <25>

Squares R1C1 and R9C1 in column 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <25>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C1 - removing <2> from <238> leaving <38>

R7C1 - removing <25> from <2358> leaving <38>

Squares R1C7 and R2C7 in column 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <13>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C7 - removing <13> from <1367> leaving <67>

R7C7 - removing <1> from <169> leaving <69>

R9C7 - removing <1> from <179> leaving <79>

Squares R1C7 and R2C7 in block 3 form a simple naked pair. These 2 squares both contain the 2 possibilities <13>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R2C8 - removing <1> from <158> leaving <58>

R3C8 - removing <1> from <168> leaving <68>

Squares R1C1<25>, R2C2<15> and R3C2<12> in block 1 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <125>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R2C3 - removing <1> from <138> leaving <38>

Intersection of column 3 with block 7. The values <19> only appears in one or more of squares R7C3, R8C3 and R9C3 of column 3. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain these values.

R7C2 - removing <1> from <125> leaving <25>

Squares R1C1 and R1C9 in row 1 and R9C1 and R9C9 in row 9 form a Simple X-Wing pattern on possibility <5>. All other instances of this possibility in columns 1 and 9 can be removed.

R7C9 - removing <5> from <58> leaving <8>

R7C1 can only be <3>

R8C8 can only be <1>

R8C3 can only be <8>

R3C1 can only be <8>

R2C3 can only be <3>

R2C7 can only be <1>

R2C2 can only be <5>

R1C7 can only be <3>

R3C8 can only be <6>

R3C7 can only be <7>

R7C8 can only be <5>

R7C2 can only be <2>

R2C8 can only be <8>

R9C9 can only be <7>

R9C7 can only be <9>

R3C9 can only be <2>

R1C5 can only be <1>

R1C1 can only be <2>

R3C2 can only be <1>

R1C9 can only be <5>

R7C6 can only be <1>

R9C1 can only be <5>

R7C3 can only be <9>

R3C6 can only be <9>

R9C5 can only be <2>

R4C5 can only be <3>

R9C3 can only be <1>

R7C7 can only be <6>

R3C4 can only be <3>

R4C6 can only be <2>

R4C4 can only be <9>

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