Daily Sudoku Answer 

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R1C8 is the only square in row 1 that can be <3>

R8C7 is the only square in row 8 that can be <3>

R6C9 is the only square in row 6 that can be <3>

R9C2 is the only square in row 9 that can be <8>

R4C9 is the only square in column 9 that can be <5>

R3C8 is the only square in column 8 that can be <5>

R3C7 is the only square in row 3 that can be <8>

R4C1 is the only square in row 4 that can be <8>

Intersection of row 1 with block 1. The value <4> only appears in one or more of squares R1C1, R1C2 and R1C3 of row 1. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.

R2C3 - removing <4> from <12469> leaving <1269>

Intersection of row 3 with block 1. The values <27> 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.

R1C2 - removing <2> from <1246> leaving <146>

R2C3 - removing <2> from <1269> leaving <169>

Intersection of row 1 with block 2. The values <25> only appears in one or more of squares R1C4, R1C5 and R1C6 of row 1. These squares are the ones that intersect with block 2. Thus, the other (non-intersecting) squares of block 2 cannot contain these values.

R2C4 - removing <2> from <1289> leaving <189>

R2C5 - removing <2> from <2689> leaving <689>

Intersection of row 8 with block 7. The value <7> only appears in one or more of squares R8C1, R8C2 and R8C3 of row 8. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain this value.

R7C2 - removing <7> from <1247> leaving <124>

R7C3 - removing <7> from <12457> leaving <1245>

Intersection of row 8 with block 8. The value <9> 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 this value.

R7C4 - removing <9> from <12579> leaving <1257>

Intersection of row 9 with block 9. The value <4> only appears in one or more of squares R9C7, R9C8 and R9C9 of row 9. These squares are the ones that intersect with block 9. Thus, the other (non-intersecting) squares of block 9 cannot contain this value.

R7C7 - removing <4> from <1249> leaving <129>

R7C8 - removing <4> from <1479> leaving <179>

R7C9 - removing <4> from <124> leaving <12>

Intersection of block 3 with row 2. The values <124> only appears in one or more of squares R2C7, R2C8 and R2C9 of block 3. These squares are the ones that intersect with row 2. Thus, the other (non-intersecting) squares of row 2 cannot contain these values.

R2C3 - removing <1> from <169> leaving <69>

R2C4 - removing <1> from <189> leaving <89>

Squares R5C4<589>, R5C5<589> and R6C4<58> in block 5 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <589>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R4C6 - removing <9> from <349> leaving <34>

R5C6 - removing <59> from <3459> leaving <34>

R4C7 is the only square in row 4 that can be <9>

R7C8 is the only square in row 7 that can be <9>

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

R7C3 is the only square in row 7 that can be <5>

R7C2 is the only square in row 7 that can be <4>

R1C1 is the only square in row 1 that can be <4>

R9C8 is the only square in row 9 that can be <7>

R9C9 is the only square in row 9 that can be <4>

R6C1 is the only square in column 1 that can be <5>

R6C4 can only be <8>

R6C8 can only be <4>

R2C4 can only be <9>

R6C7 can only be <6>

R2C8 can only be <1>

R2C3 can only be <6>

R5C4 can only be <5>

R3C6 can only be <1>

R2C9 can only be <2>

R5C8 can only be <8>

R2C7 can only be <4>

R7C9 can only be <1>

R3C1 can only be <7>

R9C6 can only be <6>

R5C5 can only be <9>

R1C4 can only be <2>

R6C3 can only be <7>

R5C7 can only be <1>

R7C7 can only be <2>

R9C5 can only be <2>

R1C6 can only be <5>

R9C4 can only be <1>

R1C5 can only be <6>

R8C6 can only be <9>

R2C5 can only be <8>

R1C2 can only be <1>

R3C2 can only be <2>

R8C1 can only be <1>

R3C3 can only be <9>

R5C3 can only be <4>

R8C2 can only be <7>

R8C3 can only be <2>

R8C5 can only be <5>

R4C2 can only be <3>

R4C6 can only be <4>

R5C2 can only be <6>

R4C3 can only be <1>

R5C6 can only be <3>

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