Jun 03 - Hard
Puzzle Copyright © Kevin Stone
Share link – www.brainbashers.com
Reasoning
R4C2 can only be <6>
R8C7 can only be <9>
R4C6 can only be <2>
R4C8 can only be <3>
R4C4 can only be <1>
R7C8 can only be <5>
R4C9 can only be <4>
R4C1 can only be <5>
R6C9 is the only square in row 6 that can be <1>
R6C1 is the only square in row 6 that can be <2>
R6C2 is the only square in row 6 that can be <9>
R7C7 is the only square in row 7 that can be <4>
R8C6 is the only square in row 8 that can be <5>
R9C3 is the only square in row 9 that can be <1>
R9C4 is the only square in row 9 that can be <4>
R9C6 is the only square in column 6 that can be <9>
Squares R2C3 and R2C6 in row 2 form a simple naked pair. These 2 squares both contain the 2 possibilities <68>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.
R2C4 - removing <68> from <2368> leaving <23>
R2C7 - removing <6> from <236> leaving <23>
Squares R5C1 and R5C3 in row 5 form a simple naked pair. These 2 squares both contain the 2 possibilities <48>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.
R5C5 - removing <8> from <678> leaving <67>
Squares R7C2 and R7C9 in row 7 form a simple naked pair. These 2 squares both contain the 2 possibilities <38>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the row.
R7C1 - removing <38> from <3689> leaving <69>
R7C3 - removing <8> from <2689> leaving <269>
R7C5 - removing <8> from <268> leaving <26>
Intersection of block 8 with column 5. The value <6> only appears in one or more of squares R7C5, R8C5 and R9C5 of block 8. These squares are the ones that intersect with column 5. Thus, the other (non-intersecting) squares of column 5 cannot contain this value.
R1C5 - removing <6> from <167> leaving <17>
R3C5 - removing <6> from <12678> leaving <1278>
R5C5 - removing <6> from <67> leaving <7>
R5C9 can only be <2>
R1C5 can only be <1>
R5C7 can only be <6>
R6C8 can only be <7>
R3C8 can only be <6>
R3C7 is the only square in row 3 that can be <1>
R3C5 is the only square in row 3 that can be <2>
R7C5 can only be <6>
R2C4 can only be <3>
R7C1 can only be <9>
R9C5 can only be <8>
R8C4 can only be <2>
R2C7 can only be <2>
R1C4 can only be <6>
R7C3 can only be <2>
R8C3 can only be <8>
R2C3 can only be <6>
R3C3 can only be <5>
R5C3 can only be <4>
R7C2 can only be <3>
R1C6 can only be <7>
R6C4 can only be <8>
R2C6 can only be <8>
R1C7 can only be <3>
R1C1 can only be <4>
R1C9 can only be <5>
R9C7 can only be <7>
R3C9 can only be <7>
R6C6 can only be <6>
R9C9 can only be <3>
R5C1 can only be <8>
R1C3 can only be <9>
R7C9 can only be <8>
R3C2 can only be <8>
R9C1 can only be <6>
R3C1 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.