See if this does well.
<font face=Courier New><SPAN style="color:#00007F">Sub</SPAN> NoSeeEm()
<SPAN style="color:#00007F">Dim</SPAN> c <SPAN style="color:#00007F">As</SPAN> Range
Application.ScreenUpdating = <SPAN style="color:#00007F">False</SPAN>
<SPAN style="color:#00007F">With</SPAN> Application.WorksheetFunction
<SPAN style="color:#00007F">For</SPAN> <SPAN style="color:#00007F">Each</SPAN> c <SPAN style="color:#00007F">In</SPAN> Range("a21:a210")
<SPAN style="color:#00007F">If</SPAN> .CountIf(Range("A" & c.Row & ":K" & c.Row), 0) = 11 <SPAN style="color:#00007F">Then</SPAN>
c.EntireRow.Hidden = <SPAN style="color:#00007F">True</SPAN>
<SPAN style="color:#00007F">Else</SPAN>
c.EntireRow.Hidden = <SPAN style="color:#00007F">False</SPAN>
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">If</SPAN>
<SPAN style="color:#00007F">Next</SPAN> c
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">With</SPAN>
Application.ScreenUpdating = <SPAN style="color:#00007F">True</SPAN>
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">Sub</SPAN></FONT>