A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The correct syntax is:
=if(and(isblank(c2),isblank(d2),isblank(e2),isblank(f2)),"Pool"," ")
You also need to realize that setting the cell to a single space as this formula does will cause Isblank to fail. It's not blank, but a space.