skip to main content




Daily Sudoku Answer 



BrainBashers doesn't show adverts, and I continue to depend on the ongoing support from everyone who enjoys the site.

Please consider supporting BrainBashers [hide]
Loading

X

Loading

May 16 - Very Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s080715



Reasoning 



R5C2 can only be <7>

R9C2 can only be <3>

R2C2 can only be <6>

R8C2 can only be <9>

R6C2 can only be <5>

R2C3 is the only square in row 2 that can be <3>

R3C9 is the only square in row 3 that can be <6>

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

R4C8 is the only square in row 4 that can be <5>

R5C5 is the only square in row 5 that can be <4>

R2C9 is the only square in row 2 that can be <4>

R3C6 is the only square in row 3 that can be <4>

R3C5 is the only square in row 3 that can be <9>

R1C7 is the only square in row 1 that can be <9>

R5C8 is the only square in row 5 that can be <6>

R6C3 is the only square in row 6 that can be <9>

R7C6 is the only square in row 7 that can be <9>

R9C1 is the only square in row 9 that can be <4>

R7C7 is the only square in row 7 that can be <4>

R8C8 is the only square in column 8 that can be <8>

R9C9 can only be <5>

R1C9 is the only square in column 9 that can be <1>

Squares R6C4 and R6C9 in row 6 form a simple naked pair. These 2 squares both contain the 2 possibilities <78>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R6C5 - removing <78> from <2678> leaving <26>

Squares R6C5 and R6C6 in block 5 form a simple naked pair. These 2 squares both contain the 2 possibilities <26>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R4C5 - removing <2> from <12378> leaving <1378>

R4C6 - removing <2> from <12> leaving <1>

R8C6 can only be <6>

R6C6 can only be <2>

R6C5 can only be <6>

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

R2C4 is the only square in column 4 that can be <1>

Intersection of row 3 with block 1. The value <2> 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.

R1C1 - removing <2> from <257> leaving <57>

Intersection of row 5 with block 6. The value <3> only appears in one or more of squares R5C7, R5C8 and R5C9 of row 5. These squares are the ones that intersect with block 6. Thus, the other (non-intersecting) squares of block 6 cannot contain this value.

R4C7 - removing <3> from <237> leaving <27>

Intersection of column 1 with block 4. The value <8> only appears in one or more of squares R4C1, R5C1 and R6C1 of column 1. These squares are the ones that intersect with block 4. Thus, the other (non-intersecting) squares of block 4 cannot contain this value.

R5C3 - removing <8> from <128> leaving <12>

Squares R2C5, R2C8, R1C5 and R1C8 form a Type-1 Unique Rectangle on <27>.

R1C5 - removing <27> from <257> leaving <5>

R1C1 can only be <7>

R3C4 can only be <7>

R3C3 can only be <2>

R6C4 can only be <8>

R2C5 can only be <2>

R6C9 can only be <7>

R4C4 can only be <3>

R7C9 can only be <3>

R4C7 can only be <2>

R7C4 can only be <5>

R7C5 can only be <8>

R5C9 can only be <8>

R8C7 can only be <7>

R8C1 can only be <1>

R1C8 can only be <2>

R2C8 can only be <7>

R3C1 can only be <5>

R5C3 can only be <1>

R4C5 can only be <7>

R4C1 can only be <8>

R5C7 can only be <3>

R9C3 can only be <8>

R5C1 can only be <2>

R7C3 can only be <7>

R9C5 can only be <1>

R8C5 can only be <3>



Today's Sudoku Puzzles 



All daily items change at midnight GMT – set your local time zone.

Note: BrainBashers has a Dark Mode setting.