We intend to solve Sudoku puzzles using various rules based on the structures and properties of the puzzle. In this paper, we shall present several structures related to either one potential solution or two potential solutions.
Hang Chen. Curtis Cooper. "Solving Sudoku: Structures and Strategies." Missouri J. Math. Sci. 29 (1) 12 - 18, May 2017. https://doi.org/10.35834/mjms/1488423697