Logic Puzzles are aptly named because it is best to approach them logically. If you have never played grid-based logic puzzles before or want to get better at solving them, then here is an easy starting guide of how to approach them.
Firstly, read through the clues one by one and start filling in the grid accordingly with false or true answers. If you think you have got ALL the information out of a particular clue, cross it out so you don’t waste time going back to it again. But make sure you have got ALL the information out of it.
An example can be seen in this image of the Blind Dates puzzle. We have all the information from Clue 1 filled in so we can now cross it out and move on.
Once you have got to the end of the clues, go back to the beginning and go through them again. The reason for this is that often you find that the later clues reveal information than can affect the information you get out of the earlier clues.
Next, look at the true answers that you have filled in and look along their lines both horizontally and vertically. This will tell you if there is any additional information you can fill in. For example, in the Blind Dates image above, we know that Simon and Mary are true, we also know that Simon and 7pm are true, so it follows that we can fill in that Mary and 7pm are true.
Equally, the same details (Simon and Mary being true) tells us that if there is an X marked in the square for Simon and the park, it means Mary’s date couldn’t have been at the park either . . so fill that one in with an X too.
For easier puzzles these simple rules will be enough to get you underway. We will cover some more advanced solving techniques in the following posts.