Daily Sudoku Answer 

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R8C6 can only be <6>

R9C6 can only be <7>

R2C6 can only be <9>

R5C6 can only be <3>

R7C5 can only be <8>

R7C3 can only be <9>

R7C1 can only be <5>

R7C9 can only be <6>

R7C8 can only be <7>

R5C1 is the only square in column 1 that can be <9>

R8C4 is the only square in column 4 that can be <1>

R8C5 can only be <2>

R2C1 is the only square in column 1 that can be <1>

R4C2 is the only square in block 4 that can be <7>

R6C2 is the only square in column 2 that can be <5>

R9C2 is the only square in column 2 that can be <1>

Intersection of block 4 with column 3. The values <148> only appears in one or more of squares R4C3, R5C3 and R6C3 of block 4. These squares are the ones that intersect with column 3. Thus, the other (non-intersecting) squares of column 3 cannot contain these values.

R1C3 - removing <48> from <2468> leaving <26>

R2C3 - removing <48> from <23468> leaving <236>

R9C3 - removing <8> from <38> leaving <3>

Squares R8C1 and R8C2 in row 8 form a simple naked pair. These 2 squares both contain the 2 possibilities <48>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R8C7 - removing <8> from <3589> leaving <359>

R8C8 - removing <8> from <3589> leaving <359>

R8C9 - removing <8> from <589> leaving <59>

Squares R2C3<26>, R2C4<24> and R2C5<46> in row 2 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <246>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R2C2 - removing <4> from <348> leaving <38>

R2C8 - removing <6> from <3568> leaving <358>

R2C9 - removing <4> from <458> leaving <58>

Intersection of row 2 with block 2. The value <4> only appears in one or more of squares R2C4, R2C5 and R2C6 of row 2. These squares are the ones that intersect with block 2. Thus, the other (non-intersecting) squares of block 2 cannot contain this value.

R1C4 - removing <4> from <247> leaving <27>

R3C5 - removing <4> from <467> leaving <67>

Squares R9C7, R9C9, R5C7 and R5C9 form a Type-3 Unique Rectangle on <28>. Upon close inspection, it is clear that:

(R5C7 or R5C9)<45>, R4C8<56> and R4C7<456> form a naked triplet on <456> in block 6. No other squares in the block can contain these possibilities

R6C7 - removing <4> from <489> leaving <89>

(R5C7 or R5C9)<45>, R5C5<457> and R5C4<47> form a naked triplet on <457> in row 5. No other squares in the row can contain these possibilities

R5C3 - removing <4> from <48> leaving <8>

Squares R6C3, R6C5, R4C3 and R4C5 form a Type-1 Unique Rectangle on <14>.

R4C5 - removing <14> from <145> leaving <5>

R4C8 can only be <6>

R4C7 can only be <4>

R1C8 can only be <8>

R6C8 can only be <9>

R2C9 can only be <5>

R2C8 can only be <3>

R8C9 can only be <9>

R4C3 can only be <1>

R1C7 can only be <6>

R5C9 can only be <2>

R5C7 can only be <5>

R9C9 can only be <8>

R6C7 can only be <8>

R3C9 can only be <4>

R9C7 can only be <2>

R1C3 can only be <2>

R2C2 can only be <8>

R8C8 can only be <5>

R3C7 can only be <9>

R3C1 can only be <7>

R3C2 can only be <3>

R6C3 can only be <4>

R8C7 can only be <3>

R6C5 can only be <1>

R1C4 can only be <7>

R2C3 can only be <6>

R1C1 can only be <4>

R5C4 can only be <4>

R3C5 can only be <6>

R8C2 can only be <4>

R2C5 can only be <4>

R2C4 can only be <2>

R5C5 can only be <7>

R8C1 can only be <8>

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