The full reasoning can be found below the Sudoku.
Jun 06 - Hard
Puzzle Copyright © Kevin Stone
Share link:
Reasoning
R2C1 is the only square in row 2 that can be <7>
R4C8 is the only square in row 4 that can be <9>
R1C3 is the only square in column 3 that can be <9>
R4C5 is the only square in column 5 that can be <1>
R9C7 is the only square in column 7 that can be <9>
Squares R2C7 and R2C8 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.
R2C3 - removing <8> from <28> leaving <2>
R2C4 - removing <6> from <2346> leaving <234>
R2C5 - removing <8> from <2348> leaving <234>
R5C3 is the only square in column 3 that can be <8>
Squares R2C8 and R6C8 in column 8 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 column.
R1C8 - removing <8> from <158> leaving <15>
R7C8 - removing <6> from <156> leaving <15>
Squares R2C4 and R2C5 in block 2 form a simple naked pair. These 2 squares both contain the 2 possibilities <34>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.
R1C5 - removing <3> from <2358> leaving <258>
R1C6 - removing <3> from <235> leaving <25>
R3C4 - removing <3> from <23569> leaving <2569>
R3C5 - removing <3> from <23589> leaving <2589>
R3C6 - removing <3> from <2356> leaving <256>
Squares R2C7 and R2C8 in block 3 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 block.
R1C9 - removing <8> from <12358> leaving <1235>
R3C7 - removing <68> from <168> leaving <1>
R3C9 - removing <68> from <123568> leaving <1235>
R3C2 can only be <3>
R5C7 can only be <7>
R1C8 can only be <5>
R1C6 can only be <2>
R7C8 can only be <1>
R3C1 can only be <8>
R3C9 can only be <2>
R4C2 can only be <4>
R1C9 can only be <3>
R4C9 can only be <6>
R6C2 can only be <2>
R8C2 can only be <7>
R6C8 can only be <8>
R5C1 can only be <5>
R6C9 can only be <4>
R2C8 can only be <6>
R6C4 can only be <3>
R5C9 can only be <1>
R9C2 can only be <1>
R1C5 can only be <8>
R2C7 can only be <8>
R1C1 can only be <1>
R5C6 can only be <4>
R4C1 can only be <3>
R5C4 can only be <2>
R6C1 can only be <6>
R6C5 can only be <7>
R2C4 can only be <4>
R4C6 can only be <5>
R2C5 can only be <3>
R8C7 can only be <6>
R3C6 can only be <6>
R9C1 can only be <2>
R8C3 can only be <5>
R8C6 can only be <3>
R9C5 can only be <5>
R7C1 can only be <4>
R9C4 can only be <6>
R9C9 can only be <7>
R3C5 can only be <9>
R8C5 can only be <4>
R7C9 can only be <5>
R3C4 can only be <5>
R7C6 can only be <7>
R7C5 can only be <2>
R7C3 can only be <6>
R8C9 can only be <8>
R7C4 can only be <9>
Today's Sudoku Puzzles
All daily items change at midnight GMT – set your local time zone.
Note: BrainBashers has a Dark Mode option. For BrainBashers, I'd recommend not using your browser's built-in dark mode, or any dark mode extensions (sometimes you can add an exception for a specific website).