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If you're not familiar with Sudoku, it's a popular game consisting of a 9x9 grid of numbers (1-9), that is further broken into three smaller 3x3 grids, where each line and grid must use each number (1-9) only once.
My name is Lauren and I'm a victim of the Sudoku "guess and check".
Sure, there may be one easy row that I can complete by doing some simple algebra, but when it comes to the "extra hard" puzzles, you can forget it. Each puzzle has 729 parameters, so the odds of my "guess and check" method being accurate the first time around are pretty slim.
"The first constraint requires that each cell, denoted by its row and column, contains one value. The second and third constraints maintain that only one of a value is contained within a column and row, respectively. The last constraint fixes that only one of a value is found in each subgrid.
While the excitement from my "guess and check" method may have been lost to a formula, for any perfectionist like myself, I can sleep easy knowing the puzzle was successfully completed (and I learned about linear puzzling along the way!).