I've heard it before about pawns. I don't really have an opinion on what is ''the most important factor'', because every game is different. Pawns may be the focus of attention during one game, and in another they might be sacrificed or just traded off, allowing your other pieces to roam the board.
I guess in closed pawn structures, subtle pawn moves can give you an advantage, or can become your weakness if not played correctly.
They are vital to protecting your position from advancing pieces so it could be argued that they are the most important part of the army? Also, in some games our only hope might be a pawn promotion, which again makes them exceptionally important.


I'm reading John Watson's "Mastering Chess Openings" and in the section on Opening Ideas and Positional Features he states "... understanding pawn-structures (a subject much wider than pawn weaknesses) is more important than any other factor in understanding chess."
Anyone agree?
Is there one factor that is more important?
Are pawns the soul of chess?