The Wizard has started a thread on Cashman Bingo over on WoV. I think he doesn't know enough about the game at this point.
He is trying to determine how many squares on the Bingo Card should be covered to make it a positive play. I don't think that is the right approach.
To me it's not the number of squares that have been covered. It's the amount of money that's in those squares.
Here is the game in question. Check the board out but also look at the meters. There is a mini, minor, maxi and major meter (There is also a grand meter with several thousand dollars in it that you can't see in the pic).Those meters are important on this play. Not only for the amount of money in them but also whether or not they are on the Bingo Card.
In this pic you can see that one of the covered squares has a mini meter in it. If you bingo on that line you are awarded the mini meter. And one square has a major meter in it. If you bingo on that line you will be awarded the money in the major meter. There are actually two ways to bingo with the major meter in it.
This particular game is on the $1.50 bet level. The fact that the major meter, at $484, is on the board makes this a very strong play. It has huge expectation.
You are not always going to hit the major in this spot but you will get your share in the long run.