The most important feature of the Chess position is the activity of the pieces.
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[Event "rated untimed match"]
[Site "?"]
[Date "1968.??.??"]
[Round "?"]
[White "Zuckerman, Bernard"]
[Black "Rossolimo, Nicholas"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "5rr1/pp1kbn2/2p1R3/3p4/6n1/2NB4/PPPB1PP1/4RK2 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Nh2+ 2. Kg1 Nf3+ 3. Kf1 Nxd2+ 4. Kg1 Nf3+ 5. Kf1 Nxe1 6. Rxe1 { Black
wins with a large material advantage. } 0-1