Originally Posted by
cherisews
The first thing you need to do is re-check your directions.
There is not an easy way to make a 23" 9 patch block. 23 does not divide evenly by 3. Are you sure is isn't a 24" block?
I am assuming that she is to use 8" unfinished, which would give her a 22.5" finished block, and it would be 23" unfinished.