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Daily Sudoku Answer 



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May 19 - Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s113250



Reasoning 



R4C2 is the only square in row 4 that can be <9>

R5C7 is the only square in row 5 that can be <6>

R5C5 is the only square in row 5 that can be <7>

R5C3 is the only square in column 3 that can be <4>

Intersection of row 3 with block 1. The value <3> 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 this value.

R2C1 - removing <3> from <13567> leaving <1567>

R2C2 - removing <3> from <13567> leaving <1567>

Intersection of column 2 with block 4. The value <3> only appears in one or more of squares R4C2, R5C2 and R6C2 of column 2. These squares are the ones that intersect with block 4. Thus, the other (non-intersecting) squares of block 4 cannot contain this value.

R4C1 - removing <3> from <135> leaving <15>

R6C1 - removing <3> from <358> leaving <58>

R4C8 is the only square in row 4 that can be <3>

R5C8 can only be <8>

R6C2 is the only square in row 6 that can be <3>

R6C1 is the only square in row 6 that can be <8>

Intersection of row 9 with block 7. The value <8> only appears in one or more of squares R9C1, R9C2 and R9C3 of row 9. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain this value.

R7C3 - removing <8> from <38> leaving <3>

R8C2 - removing <8> from <15678> leaving <1567>

R7C1 can only be <6>

R2C2 is the only square in row 2 that can be <6>

R3C1 is the only square in row 3 that can be <3>

R9C6 is the only square in row 9 that can be <6>

R8C9 is the only square in row 8 that can be <6>

R8C5 is the only square in row 8 that can be <8>

R7C9 is the only square in row 7 that can be <8>

R8C6 is the only square in block 8 that can be <4>

Intersection of column 6 with block 2. The value <2> only appears in one or more of squares R1C6, R2C6 and R3C6 of column 6. 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 <2> from <1259> leaving <159>

R2C4 - removing <2> from <1235> leaving <135>

R2C5 - removing <2> from <1245> leaving <145>

R9C4 is the only square in column 4 that can be <2>

R9C7 can only be <4>

R7C5 can only be <9>

R9C8 can only be <1>

R8C8 can only be <9>

R7C7 can only be <2>

R8C4 can only be <5>

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

R1C7 can only be <5>

R1C6 can only be <2>

R1C8 can only be <7>

R1C4 is the only square in row 1 that can be <9>

R2C1 is the only square in row 2 that can be <7>

R8C1 can only be <1>

R8C2 can only be <7>

R4C1 can only be <5>

R4C9 can only be <2>

R5C2 can only be <1>

R4C5 can only be <1>

R6C8 can only be <4>

R5C4 can only be <3>

R1C2 can only be <8>

R5C6 can only be <5>

R2C4 can only be <1>

R2C6 can only be <3>

R6C5 can only be <2>

R6C9 can only be <5>

R2C8 can only be <2>

R1C3 can only be <1>

R9C2 can only be <5>

R3C3 can only be <5>

R2C9 can only be <4>

R2C5 can only be <5>

R3C9 can only be <1>

R3C5 can only be <4>

R9C3 can only be <8>



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