BB Logo
Spacer
Line
Line
Sudoku Solution Path

? ?

R5C5 can only be <6>
R8C4 can only be <1>
R1C5 can only be <3>
R9C5 can only be <8>
R9C4 can only be <6>
R9C6 can only be <9>
R9C7 can only be <5>
R8C6 can only be <3>
R1C6 can only be <6>
R1C7 can only be <9>
R2C6 can only be <2>
R2C7 can only be <6>
R8C7 can only be <8>
R2C4 is the only square in row 2 that can be <7>
R1C4 can only be <5>
R4C8 is the only square in row 4 that can be <8>
R6C9 is the only square in row 6 that can be <3>
R7C1 is the only square in row 7 that can be <8>
R9C1 is the only square in row 9 that can be <2>
R3C2 is the only square in row 3 that can be <2>
Squares R1C3 and R9C3 in column 3 form a simple locked pair. These 2 squares both contain the 2 possibilities <14>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.
   R2C3 - removing <4> from <459> leaving <59>
   R8C3 - removing <4> from <459> leaving <59>
Intersection of column 1 with block 4. The value <9> only appears in one or more of squares R4C1, R5C1 and R6C1 of column 1. These squares are the ones that intersect with block 4. Thus, the other (non-intersecting) squares of block 4 cannot contain this value.
   R6C2 - removing <9> from <469> leaving <46>
Intersection of column 8 with block 3. The value <5> 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.
   R3C9 - removing <5> from <157> leaving <17>
Squares R1C9<147>, R3C9<17> and R9C9<14> in column 9 form a comprehensive locked triplet. These 3 squares can only contain the 3 possibilities <147>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the column.
   R7C9 - removing <1> from <169> leaving <69>
Squares R2C2 and R2C8 in row 2 and R8C2 and R8C8 in row 8 form a Simple X-Wing pattern on possibility <4>. All other instances of this possibility in columns 2 and 8 can be removed.
   R6C2 - removing <4> from <46> leaving <6>
R6C8 can only be <9>
R6C1 can only be <4>
R8C8 can only be <4>
R5C9 can only be <5>
R2C8 can only be <5>
R9C9 can only be <1>
R9C3 can only be <4>
R3C9 can only be <7>
R7C8 can only be <6>
R2C3 can only be <9>
R3C8 can only be <1>
R3C1 can only be <5>
R1C9 can only be <4>
R5C1 can only be <9>
R4C9 can only be <6>
R7C9 can only be <9>
R7C2 can only be <1>
R1C3 can only be <1>
R1C1 can only be <7>
R2C2 can only be <4>
R8C3 can only be <5>
R4C1 can only be <1>
R4C2 can only be <5>
R8C2 can only be <9>


 

This website uses cookies, for more information please view our privacy policy.

Line
Line