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TwitThis2. Seek the easy answers first. That is, always use the "nearby values" method to start. Both from a solution and a psychological point of view, it is best to get several cells filled in fast.
3. Start in order. Some people like to search for nearby values for 1 first and then proceed in order up to 9. This brings a sense of order and ritual to your start and also makes sure you don't overlook any fast and easy answers.
4. Focus on the regions with the most numbers filled in. It is generally much easier to figure out the last two or three cells in a region than it is to find answers in more open regions.
5. Also focus on the rows and columns with the most numbers filled in. The reason is the same: It's easier to figure out the last few cells than to work in more open areas.
6. When the answers aren't coming, take a break and start fresh later. It's amazing how often elusive answers will come to you when your eyes are fresh and your energy revived.
7. Never guess. As a puzzle of logic, there is never a point in a Sudoku puzzle that requires a guess. The answer is always there, just waiting for you to figure it out.
8. But if you do guess...mark the cells you fill in from that point forward so that you'll know what to erase if the guess proves wrong.
9. Progress slowly. Don't graduate to the next level of difficulty until you consistently solve puzzles at your current level in 15 minutes or less.
Like Sudoku? Try KenKen!
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