skip to main content




Daily Sudoku Answer 



Loading

X

Loading

Jan 24 - Very Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s055522



Reasoning 



R6C6 is the only square in row 6 that can be <3>

R6C4 is the only square in row 6 that can be <5>

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

R9C2 is the only square in row 9 that can be <5>

R3C1 is the only square in row 3 that can be <5>

R5C1 is the only square in column 1 that can be <2>

Squares R2C4 and R5C4 in column 4 form a simple naked pair. These 2 squares both contain the 2 possibilities <69>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.

R4C4 - removing <6> from <126> leaving <12>

R8C4 - removing <9> from <129> leaving <12>

Intersection of column 3 with block 7. The value <1> only appears in one or more of squares R7C3, R8C3 and R9C3 of column 3. 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 <1489> leaving <489>

Intersection of block 2 with column 5. The value <2> only appears in one or more of squares R1C5, R2C5 and R3C5 of block 2. These squares are the ones that intersect with column 5. Thus, the other (non-intersecting) squares of column 5 cannot contain this value.

R4C5 - removing <2> from <12468> leaving <1468>

R9C5 - removing <2> from <1249> leaving <149>

R9C8 is the only square in row 9 that can be <2>

R1C5 is the only square in row 1 that can be <2>

R3C9 is the only square in row 3 that can be <2>

R2C4 is the only square in block 2 that can be <6>

R5C4 can only be <9>

R8C1 is the only square in column 1 that can be <6>

Intersection of block 7 with row 7. The value <9> only appears in one or more of squares R7C1, R7C2 and R7C3 of block 7. These squares are the ones that intersect with row 7. Thus, the other (non-intersecting) squares of row 7 cannot contain this value.

R7C5 - removing <9> from <149> leaving <14>

R7C8 - removing <9> from <4789> leaving <478>

Intersection of column 8 with block 3. The value <9> only appears in one or more of squares R1C8, R2C8 and R3C8 of column 8. These squares are the ones that intersect with block 3. Thus, the other (non-intersecting) squares of block 3 cannot contain this value.

R1C7 - removing <9> from <479> leaving <47>

R2C7 - removing <9> from <14789> leaving <1478>

Squares R3C5 and R3C8 in row 3 and R6C5 and R6C8 in row 6 form a Simple X-Wing pattern on possibility <7>. All other instances of this possibility in columns 5 and 8 can be removed.

R1C8 - removing <7> from <479> leaving <49>

R5C5 - removing <7> from <4678> leaving <468>

R7C8 - removing <7> from <478> leaving <48>

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

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

R8C4 can only be <2>

R4C4 can only be <1>

R4C6 is the only square in row 4 that can be <2>

R6C2 is the only square in row 6 that can be <1>

Squares R3C2 and R3C8 in row 3 and R7C2 and R7C8 in row 7 form a Simple X-Wing pattern on possibility <8>. All other instances of this possibility in columns 2 and 8 can be removed.

R4C8 - removing <8> from <68> leaving <6>

R4C2 can only be <4>

R6C8 can only be <7>

R6C5 can only be <6>

R5C7 can only be <8>

R4C5 can only be <8>

R5C3 can only be <6>

R5C5 can only be <4>

R5C6 can only be <7>

R9C5 can only be <9>

R2C6 can only be <9>

R3C5 can only be <7>

R8C6 can only be <4>

R2C1 can only be <4>

R7C1 can only be <9>

R1C3 can only be <7>

R7C2 can only be <8>

R7C8 can only be <4>

R3C2 can only be <9>

R8C3 can only be <1>

R1C8 can only be <9>

R9C7 can only be <1>

R8C7 can only be <9>

R8C9 can only be <8>

R9C3 can only be <4>

R2C9 can only be <1>

R2C7 can only be <7>

R1C7 can only be <4>

R2C3 can only be <8>

R1C2 can only be <6>

R3C8 can only be <8>



Today's Sudoku Puzzles 



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

Note: BrainBashers has a Dark Mode setting.