[OK] Privacy Policy  -  Terms & Conditions  -  See DetailsWe use cookies to personalise content and ads. We also share information about your use of our site with our advertising partners who may combine it with other information you've provided to them or they've collected from your use of their services.
 Sudoku Solution Path    R5C6 can only be <1> R3C7 is the only square in row 3 that can be <2> R4C5 is the only square in row 4 that can be <4> R6C3 is the only square in row 6 that can be <2> R5C9 is the only square in row 5 that can be <2> R8C7 is the only square in row 8 that can be <4> R2C6 is the only square in row 2 that can be <4> R9C1 is the only square in row 9 that can be <2> R8C9 is the only square in column 9 that can be <9> R7C4 is the only square in row 7 that can be <9> R5C4 can only be <6> R5C8 can only be <5> R6C5 can only be <9> R5C1 can only be <8> R5C2 can only be <9> R2C5 is the only square in row 2 that can be <6> R4C7 is the only square in row 4 that can be <9> R4C8 is the only square in row 4 that can be <7> R6C2 is the only square in row 6 that can be <5> R8C4 is the only square in column 4 that can be <1> Squares R2C4 and R3C4 in block 2 form a simple locked pair. These 2 squares both contain the 2 possibilities <78>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.    R3C6 - removing <7> from <357> leaving <35> Intersection of row 2 with block 1. The value <3> only appears in one or more of squares R2C1, R2C2 and R2C3 of row 2. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.    R1C1 - removing <3> from <135> leaving <15>    R1C2 - removing <3> from <1347> leaving <147>    R3C2 - removing <3> from <3478> leaving <478>    R3C3 - removing <3> from <3578> leaving <578> Intersection of column 1 with block 1. The value <1> only appears in one or more of squares R1C1, R2C1 and R3C1 of column 1. These squares are the ones that intersect with block 1. Thus, the other (non-intersecting) squares of block 1 cannot contain this value.    R1C2 - removing <1> from <147> leaving <47>    R2C3 - removing <1> from <13578> leaving <3578> Squares R1C9<157>, R2C7<17> and R2C9<157> in block 3 form a comprehensive locked triplet. These 3 squares can only contain the 3 possibilities <157>. Since each of the squares must contain one of the possibilities, they can be eliminated from the other squares in the block.    R1C8 - removing <1> from <134> leaving <34> Squares R3C3 and R3C6 in row 3 and R7C3 and R7C6 in row 7 form a Simple X-Wing pattern on possibility <5>. All other instances of this possibility in columns 3 and 6 can be removed.    R2C3 - removing <5> from <3578> leaving <378>    R8C3 - removing <5> from <3578> leaving <378>    R8C6 - removing <5> from <357> leaving <37> Squares R1C2 and R1C9 in row 1 and R9C2 and R9C9 in row 9 form a Simple X-Wing pattern on possibility <7>. All other instances of this possibility in columns 2 and 9 can be removed.    R2C9 - removing <7> from <157> leaving <15>    R3C2 - removing <7> from <478> leaving <48>    R7C2 - removing <7> from <178> leaving <18> Squares R6C7, R6C8, R7C7 and R7C8 form a Type-4 Unique Rectangle on <16>.    R7C7 - removing <1> from <167> leaving <67>    R7C8 - removing <1> from <168> leaving <68> Intersection of row 7 with block 7. The value <1> only appears in one or more of squares R7C1, R7C2 and R7C3 of row 7. These squares are the ones that intersect with block 7. Thus, the other (non-intersecting) squares of block 7 cannot contain this value.    R9C2 - removing <1> from <1378> leaving <378> Squares R3C2 (XY), R1C2 (XZ) and R3C4 (YZ) form an XY-Wing pattern on <7>. All squares that are buddies of both the XZ and YZ squares cannot be <7>.    R3C3 - removing <7> from <578> leaving <58> R3C4 is the only square in row 3 that can be <7> R2C4 can only be <8> Squares R8C6 (XY), R8C1 (XZ) and R7C6 (YZ) form an XY-Wing pattern on <5>. All squares that are buddies of both the XZ and YZ squares cannot be <5>.    R7C3 - removing <5> from <1578> leaving <178>    R8C5 - removing <5> from <358> leaving <38> R7C6 is the only square in row 7 that can be <5> R3C6 can only be <3> R3C8 can only be <4> R8C6 can only be <7> R1C5 can only be <5> R3C2 can only be <8> R1C8 can only be <3> R1C1 can only be <1> R3C3 can only be <5> R7C2 can only be <1> R4C2 can only be <3> R1C9 can only be <7> R2C1 can only be <3> R1C2 can only be <4> R9C9 can only be <1> R2C7 can only be <1> R2C3 can only be <7> R8C1 can only be <5> R7C3 can only be <8> R2C9 can only be <5> R6C7 can only be <6> R4C3 can only be <1> R9C2 can only be <7> R6C8 can only be <1> R7C7 can only be <7> R9C8 can only be <8> R7C8 can only be <6> R8C3 can only be <3> R8C5 can only be <8> R9C5 can only be <3>