Daily Sudoku Answer 

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R2C7 is the only square in row 2 that can be <7>

R3C2 is the only square in row 3 that can be <7>

R4C9 is the only square in row 4 that can be <7>

R5C1 is the only square in row 5 that can be <7>

R9C5 is the only square in row 9 that can be <7>

R2C8 is the only square in column 8 that can be <4>

R5C9 is the only square in column 9 that can be <5>

Squares R1C9 and R3C9 in block 3 form a simple naked pair. These 2 squares both contain the 2 possibilities <28>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R1C7 - removing <28> from <1268> leaving <16>

R3C8 - removing <28> from <1268> leaving <16>

Intersection of column 1 with block 7. The value <1> only appears in one or more of squares R7C1, R8C1 and R9C1 of column 1. 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 <1> from <1349> leaving <349>

R9C3 - removing <1> from <1356> leaving <356>

Intersection of column 5 with block 5. The value <8> 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.

R6C4 - removing <8> from <23568> leaving <2356>

Squares R9C1<15>, R9C7<158> and R9C8<18> in row 9 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <158>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R9C3 - removing <5> from <356> leaving <36>

R9C4 - removing <8> from <368> leaving <36>

R7C4 is the only square in column 4 that can be <8>

R5C4 is the only square in column 4 that can be <4>

Squares R2C4 and R9C4 in column 4 form a simple naked pair. These 2 squares both contain the 2 possibilities <36>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R3C4 - removing <6> from <256> leaving <25>

R6C4 - removing <36> from <2356> leaving <25>

Squares R7C1<19>, R7C7<129> and R7C8<129> in row 7 form a comprehensive naked triplet. These 3 squares can only contain the 3 possibilities <129>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R7C2 - removing <9> from <349> leaving <34>

R7C6 - removing <2> from <234> leaving <34>

Intersection of row 7 with block 9. The value <2> only appears in one or more of squares R7C7, R7C8 and R7C9 of row 7. These squares are the ones that intersect with block 9. Thus, the other (non-intersecting) squares of block 9 cannot contain this value.

R8C7 - removing <2> from <259> leaving <59>

Squares R6C1 and R7C1 in column 1 and R6C8 and R7C8 in column 8 form a Simple X-Wing pattern on possibility <9>. All other instances of this possibility in rows 6 and 7 can be removed.

R6C2 - removing <9> from <39> leaving <3>

R6C7 - removing <9> from <2689> leaving <268>

R7C7 - removing <9> from <129> leaving <12>

R4C2 can only be <1>

R7C2 can only be <4>

R7C6 can only be <3>

R9C4 can only be <6>

R9C3 can only be <3>

R2C4 can only be <3>

R4C5 is the only square in row 4 that can be <3>

R4C8 is the only square in row 4 that can be <8>

R9C8 can only be <1>

R9C1 can only be <5>

R3C8 can only be <6>

R7C7 can only be <2>

R1C7 can only be <1>

R7C8 can only be <9>

R6C7 can only be <6>

R7C1 can only be <1>

R6C8 can only be <2>

R8C7 can only be <5>

R9C7 can only be <8>

R6C1 can only be <9>

R5C3 can only be <2>

R5C7 can only be <9>

R6C4 can only be <5>

R6C5 can only be <8>

R4C3 can only be <5>

R3C4 can only be <2>

R4C6 can only be <2>

R3C9 can only be <8>

R3C3 can only be <1>

R1C9 can only be <2>

R8C6 can only be <4>

R8C5 can only be <2>

R1C6 can only be <6>

R1C2 can only be <9>

R1C5 can only be <4>

R5C6 can only be <1>

R2C5 can only be <1>

R2C3 can only be <6>

R5C5 can only be <6>

R3C6 can only be <5>

R1C3 can only be <8>

R8C2 can only be <6>

R8C3 can only be <9>

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