Sudoku Fun

One of the biggest things to always remember while playing sudoku is that what a square CAN’T be will always dictate what it CAN be.

Yeah.. seems kind of obvious. But I can’t tell you how many people forget to look for it.

One of the tactics I use quite often is to look for a minigrid that has all three number filled in for the row (or column). The reason this is useful is because you can then look at the other two minigrids to determine at least which row numbers will go in.. if not which square.

Let’s take a row of three minigrids. The first minigrid has the middle row completely filled with 5, 8, and 9. When you look to the second minigrid, you see that it has a 3 in the top row. So.. what does this tell you? Quite simply it tells you that the 3 in the first minigrid MUST be at the bottom, and that the 3 in the last minigrid must be in the center row.

You can fill the 3 in as possibilities in the appropriate squares. This logic is obvious in the first minigrid… but a lot of people forget to recognize that it also affects the third minigrid. They work together, so if you KNOW that the 3 goes in the bottom row of the first minigrid, it is almost as good as knowing exactly what box it goes it. It doesn’t matter where it goes.. because it HAS to be in that row it automatically excludes it from the other two minigrids.

Start practicing your logic. The better you get at sudoku, the more easily you recognize the logic that takes two steps to achieve (like the above example).

Happy solving!
Kat

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