     Sudoku Solution Path   Sudoku Puzzle © Kevin Stone R2C7 is the only square in row 2 that can be <7> R4C5 is the only square in row 4 that can be <7> R5C5 is the only square in row 5 that can be <3> R5C6 is the only square in row 5 that can be <4> R5C7 is the only square in row 5 that can be <9> R8C7 can only be <2> R9C7 can only be <1> R9C9 can only be <8> R1C7 can only be <6> R7C9 can only be <4> R7C8 can only be <9> R7C5 can only be <6> R8C8 can only be <3> R7C1 can only be <8> R7C2 can only be <7> R1C5 is the only square in row 1 that can be <4> R3C5 can only be <2> R3C9 can only be <1> R3C1 can only be <6> R1C9 can only be <2> R1C1 can only be <1> R1C3 can only be <8> R5C9 can only be <6> R2C8 can only be <4> R3C8 can only be <8> R3C2 can only be <4> R5C4 is the only square in row 5 that can be <1> R2C4 can only be <6> R2C6 can only be <1> R8C3 is the only square in column 3 that can be <6> R8C2 can only be <5> R8C4 can only be <8> R2C2 can only be <2> R9C1 can only be <2> R8C6 can only be <9> R4C4 can only be <2> R6C6 can only be <6> R9C5 can only be <5> R9C3 can only be <9> R5C1 can only be <5> R6C5 can only be <9> R2C3 can only be <5> R5C3 can only be <2> R4C8 can only be <1> R6C4 can only be <5> R4C2 can only be <6> R6C8 can only be <2> R6C2 can only be <1> R4C6 can only be <8>    