Daily Sudoku Answer 

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R1C7 is the only square in row 1 that can be <4>

R1C3 is the only square in row 1 that can be <9>

R2C1 is the only square in row 2 that can be <5>

R1C8 is the only square in row 1 that can be <5>

R1C2 is the only square in row 1 that can be <8>

R3C5 is the only square in row 3 that can be <6>

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

R4C5 is the only square in row 4 that can be <5>

R4C6 is the only square in row 4 that can be <6>

R5C9 is the only square in row 5 that can be <6>

R5C1 is the only square in row 5 that can be <9>

R4C1 can only be <1>

R4C4 can only be <9>

R5C2 can only be <3>

R6C1 can only be <8>

R6C4 is the only square in row 6 that can be <3>

R7C5 is the only square in row 7 that can be <4>

R7C2 is the only square in row 7 that can be <5>

R2C5 is the only square in column 5 that can be <8>

Squares R2C9<137>, R6C9<17> and R8C9<137> in column 9 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <137>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C9 - removing <137> from <13789> leaving <89>

R7C9 - removing <17> from <1789> leaving <89>

Squares R9C2<12>, R9C4<17> and R9C6<127> in row 9 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <127>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R9C3 - removing <17> from <13678> leaving <368>

R9C7 - removing <17> from <1367> leaving <36>

R9C8 - removing <127> from <1278> leaving <8>

R7C9 can only be <9>

R3C9 can only be <8>

R3C7 is the only square in row 3 that can be <9>

R7C3 is the only square in row 7 that can be <8>

R7C8 is the only square in column 8 that can be <2>

R7C1 can only be <7>

R7C7 can only be <1>

Intersection of row 3 with block 1. The values <23> only appears in one or more of squares R3C1, R3C2 and R3C3 of row 3. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain these values.

R2C3 - removing <3> from <137> leaving <17>

Intersection of row 9 with block 8. The value <7> only appears in one or more of squares R9C4, R9C5 and R9C6 of row 9. These squares are the ones that intersect with block 8. Thus, the other (non-intersecting) squares of block 8 cannot contain this value.

R8C5 - removing <7> from <127> leaving <12>

Intersection of column 5 with block 5. The value <7> only appears in one or more of squares R4C5, R5C5 and R6C5 of column 5. These squares are the ones that intersect with block 5. Thus, the other (non-intersecting) squares of block 5 cannot contain this value.

R6C6 - removing <7> from <127> leaving <12>

Squares R1C4, R1C6, R9C4 and R9C6 form a Type-1 Unique Rectangle on <17>.

R9C6 - removing <17> from <127> leaving <2>

R9C2 can only be <1>

R6C6 can only be <1>

R8C5 can only be <1>

R6C9 can only be <7>

R1C6 can only be <7>

R5C5 can only be <7>

R6C5 can only be <2>

R8C9 can only be <3>

R5C8 can only be <1>

R9C4 can only be <7>

R8C1 can only be <2>

R8C3 can only be <6>

R2C9 can only be <1>

R9C7 can only be <6>

R3C2 can only be <2>

R1C4 can only be <1>

R9C3 can only be <3>

R8C7 can only be <7>

R2C3 can only be <7>

R3C8 can only be <7>

R3C1 can only be <3>

R2C7 can only be <3>

R3C3 can only be <1>

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