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

Jul 04 - Super Hard
Puzzle Copyright © Kevin Stone

Share link – www.brainbashers.com/s083661



Reasoning 



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

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

R7C3 is the only square in row 7 that can be <6>

R9C7 is the only square in row 9 that can be <6>

R9C5 is the only square in row 9 that can be <1>

R8C1 is the only square in column 1 that can be <9>

R7C2 is the only square in block 7 that can be <2>

R7C4 can only be <5>

Squares R1C7 and R1C8 in row 1 form a simple naked pair. These 2 squares both contain the 2 possibilities <27>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.

R1C3 - removing <27> from <2478> leaving <48>

R1C5 - removing <27> from <2478> leaving <48>

Squares R1C7 and R1C8 in block 3 form a simple naked pair. These 2 squares both contain the 2 possibilities <27>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R2C9 - removing <7> from <567> leaving <56>

R3C8 - removing <27> from <2567> leaving <56>

Squares R7C5 and R7C6 in block 8 form a simple naked pair. These 2 squares both contain the 2 possibilities <79>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.

R8C6 - removing <7> from <247> leaving <24>

Intersection of row 4 with block 5. The value <4> only appears in one or more of squares R4C4, R4C5 and R4C6 of row 4. These squares are the ones that intersect with block 5. Thus, the other (non-intersecting) squares of block 5 cannot contain this value.

R5C4 - removing <4> from <1248> leaving <128>

R5C6 - removing <4> from <12349> leaving <1239>

Squares R9C2, R9C3, R6C2 and R6C3 form a Type-3 Unique Rectangle on <57>. Upon close inspection, it is clear that:

(R6C2 or R6C3)<12> and R6C4<12> form a naked pair on <12> in row 6. No other squares in the row can contain these possibilities

R6C1 - removing <2> from <2357> leaving <357>

R6C5 - removing <2> from <29> leaving <9>

(R6C2 or R6C3)<12>, R6C5<29> and R6C4<12> form a naked triplet on <129> in row 6. No other squares in the row can contain these possibilities

R6C9 - removing <9> from <3579> leaving <357>

R7C5 can only be <7>

R7C6 can only be <9>

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

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

R3C8 can only be <5>

R2C9 can only be <6>

R3C4 is the only square in row 3 that can be <6>

R5C4 is the only square in column 4 that can be <8>

R4C1 is the only square in row 4 that can be <8>

R3C5 is the only square in row 3 that can be <8>

R1C5 can only be <4>

R1C3 can only be <8>

R4C5 can only be <2>

R4C8 can only be <1>

R6C4 can only be <1>

R4C7 can only be <5>

R8C8 can only be <7>

R2C4 can only be <2>

R5C6 can only be <3>

R8C9 can only be <5>

R1C8 can only be <2>

R8C7 can only be <1>

R4C9 can only be <3>

R1C7 can only be <7>

R8C4 can only be <4>

R3C6 can only be <7>

R3C1 can only be <2>

R2C6 can only be <1>

R4C6 can only be <4>

R6C9 can only be <7>

R6C2 can only be <5>

R5C7 can only be <2>

R8C6 can only be <2>

R5C1 can only be <7>

R2C1 can only be <5>

R5C3 can only be <4>

R6C1 can only be <3>

R6C3 can only be <2>

R9C2 can only be <7>

R9C3 can only be <5>

R2C2 can only be <4>

R2C3 can only be <7>

R5C2 can only be <1>



Today's Sudoku Puzzles 



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

Note: BrainBashers has a Dark Mode setting.