Traditionally, many publications aim for a balance in the number of black squares. For example, the NYT typically prefers puzzles with fewer than 36 black squares for standard-sized grids (15x15). Puzzles with 42 black squares would generally be considered excessive. While there are guidelines, the quality of the puzzle can sometimes outweigh strict adherence to these rules. If a puzzle is particularly innovative, engaging, or has a compelling theme, editors may be more willing to overlook the black square count.

lost track online again  and thought i’d share  basic outline,  maybe someone finds it useful.  leaving a note: article fyi.

ended up checking different pages  might as well drop this here  just generic content,  fyi only.  neutral pointer: background might be useful.

don’t even know how i got here  leaving something i saw  background info only,  neutral mention.  dropping here: xrmtowork.com might be useful.

ended up checking different pages  so putting it down  background info only,  sometimes even this helps.  leaving a note: source as is.