Ideas of Opening Play
     A. Classification of Openings
     B. Development
     C. Style of Playing
     D. Initiative
     E. Attack
     F. Pressure
     G. Defensive
     H. Hanging Pieces
     I. King Safety
     J. Seeing moves ahead
    K. Piece Play
    L. Pawn Play
    M. Planning
Ideas Of Opening Play
A. Classification of Openings
B. Development