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Daily Sudoku Answer



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Nov 25 - Hard
Puzzle Copyright © Kevin Stone

Share link: www.brainbashers.com/s010814



Reasoning



R1C1 is the only square in row 1 that can be <2>

R1C2 is the only square in row 1 that can be <6>

R1C5 is the only square in row 1 that can be <3>

R4C2 is the only square in row 4 that can be <1>

R5C8 is the only square in row 5 that can be <3>

R7C1 is the only square in row 7 that can be <6>

R6C3 is the only square in row 6 that can be <6>

R7C7 is the only square in row 7 that can be <8>

R7C5 is the only square in row 7 that can be <1>

R2C7 is the only square in row 2 that can be <1>

R3C4 is the only square in row 3 that can be <1>

R8C4 is the only square in row 8 that can be <6>

R9C8 is the only square in row 9 that can be <1>

R8C1 is the only square in row 8 that can be <1>

R6C4 is the only square in column 4 that can be <8>

R5C5 can only be <4>

R4C6 can only be <9>

R9C6 is the only square in column 6 that can be <2>

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

Intersection of column 1 with block 1. The value <8> only appears in one or more of squares R1C1, R2C1 and R3C1 of column 1. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.

R2C2 - removing <8> from <3578> leaving <357>

R2C3 - removing <8> from <34578> leaving <3457>

R3C3 - removing <8> from <4578> leaving <457>

Intersection of column 6 with block 2. The value <7> 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.

R2C5 - removing <7> from <5789> leaving <589>

R3C5 - removing <7> from <578> leaving <58>

Intersection of block 9 with column 9. The values <34> only appears in one or more of squares R7C9, R8C9 and R9C9 of block 9. These squares are the ones that intersect with column 9. Thus, the other (non-intersecting) squares of column 9 cannot contain these values.

R2C9 - removing <4> from <4579> leaving <579>

R3C9 - removing <4> from <457> leaving <57>

R4C9 - removing <4> from <247> leaving <27>

Intersection of row 3 with block 1. The value <4> 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 <4> from <478> leaving <78>

R2C3 - removing <4> from <3457> leaving <357>

R2C6 is the only square in row 2 that can be <4>

R7C6 can only be <5>

R1C4 can only be <9>

R7C9 can only be <4>

R1C6 can only be <7>

R9C4 can only be <4>

R2C9 is the only square in row 2 that can be <9>

R9C9 can only be <3>

R8C3 is the only square in row 8 that can be <3>

R2C2 is the only square in row 2 that can be <3>

R8C5 is the only square in row 8 that can be <7>

R9C5 can only be <9>

R3C9 is the only square in block 3 that can be <7>

R4C9 can only be <2>

R8C9 can only be <5>

R5C7 can only be <5>

R5C2 can only be <8>

R1C7 can only be <4>

R8C8 can only be <9>

R1C8 can only be <5>

R4C7 can only be <7>

R4C3 can only be <4>

R6C7 can only be <9>

R5C3 can only be <2>

R9C2 can only be <7>

R6C8 can only be <4>

R8C7 can only be <2>

R6C1 can only be <7>

R9C3 can only be <8>

R6C2 can only be <5>

R3C3 can only be <5>

R2C1 can only be <8>

R2C5 can only be <5>

R3C1 can only be <4>

R2C3 can only be <7>

R3C5 can only be <8>



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