The most important feature of the Chess position is the activity of the pieces.
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[Event "rated untimed match"] [Site "Warszawa"] [Date "1935.??.??"] [Round "?"] [White "Glucksberg"] [Black "Najdorf"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "r1b2rk1/pp4pp/2p3n1/3p2N1/2P2P2/3B1KP1/PP5q/R1BQ1RN1 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... Bg4+ 2. Kxg4 Ne5+ 3. fxe5 h5# 0-1