[OK]

Privacy Policy  -  Terms & Conditions  -  See Details
This website uses cookies. By using this website you are accepting the use of cookies.
For more information please view the privacy policy.

BB Logo Spacer
Spacer
Line
Line
Sudoku Solution Path

?    ?

Copyright © Kevin Stone

R2C2 is the only square in row 2 that can be <8>
R1C5 is the only square in row 1 that can be <8>
R2C8 is the only square in row 2 that can be <9>
R3C6 is the only square in row 3 that can be <2>
R4C2 is the only square in row 4 that can be <2>
R5C9 is the only square in row 5 that can be <2>
R5C5 is the only square in row 5 that can be <9>
R7C4 is the only square in row 7 that can be <9>
R8C1 is the only square in row 8 that can be <2>
R9C9 is the only square in row 9 that can be <3>
R5C1 is the only square in column 1 that can be <3>
R1C2 is the only square in column 2 that can be <4>
Intersection of column 9 with block 3. The value <5> only appears in one or more of squares R1C9, R2C9 and R3C9 of column 9. These squares are the ones that intersect with block 3. Thus, the other (non-intersecting) squares of block 3 cannot contain this value.
   R1C8 - removing <5> from <156> leaving <16>
   R3C7 - removing <5> from <1456> leaving <146>
Squares R3C5 and R7C5 in column 5 and R3C7 and R7C7 in column 7 form a Simple X-Wing pattern on possibility <4>. All other instances of this possibility in rows 3 and 7 can be removed.
   R3C4 - removing <4> from <1456> leaving <156>
   R7C6 - removing <4> from <46> leaving <6>
R3C3 is the only square in column 3 that can be <6>
R3C4 is the only square in row 3 that can be <5>
R9C1 is the only square in column 1 that can be <6>
R2C4 is the only square in column 4 that can be <6>
R6C7 is the only square in column 7 that can be <6>
R4C7 is the only square in column 7 that can be <3>
Intersection of column 3 with block 4. The values <18> only appears in one or more of squares R4C3, R5C3 and R6C3 of column 3. These squares are the ones that intersect with block 4. Thus, the other (non-intersecting) squares of block 4 cannot contain these values.
   R6C2 - removing <1> from <157> leaving <57>
Squares R5C3 and R5C7 in row 5 and R7C3 and R7C7 in row 7 form a Simple X-Wing pattern on possibility <5>. All other instances of this possibility in columns 3 and 7 can be removed.
   R4C3 - removing <5> from <158> leaving <18>
   R6C3 - removing <5> from <1578> leaving <178>
Squares R7C7 (XY), R7C5 (XZ) and R9C8 (YZ) form an XY-Wing pattern on <7>. All squares that are buddies of both the XZ and YZ squares cannot be <7>.
   R9C5 - removing <7> from <17> leaving <1>
R3C5 can only be <4>
R3C7 can only be <1>
R7C5 can only be <7>
R2C6 can only be <1>
R5C7 can only be <5>
R1C8 can only be <6>
R5C3 can only be <1>
R7C7 can only be <4>
R7C3 can only be <5>
R8C9 can only be <6>
R8C8 can only be <7>
R1C9 can only be <5>
R1C1 can only be <1>
R2C9 can only be <4>
R2C1 can only be <5>
R4C3 can only be <8>
R9C2 can only be <7>
R8C2 can only be <1>
R9C8 can only be <5>
R6C2 can only be <5>
R4C8 can only be <1>
R6C3 can only be <7>
R4C4 can only be <4>
R6C8 can only be <8>
R6C6 can only be <3>
R6C4 can only be <1>
R8C6 can only be <4>
R8C4 can only be <3>
R4C6 can only be <5>

[Puzzle Code = Sudoku-20190625-SuperHard-034483]

 

Line


BrainBashers™ is a trademark. This website uses cookies. By using this website you are accepting the use of cookies. For more information please view the privacy policy. By using this website you are also agreeing to the terms and conditions.

Line
Line