Chess is in its essence a game, in its form an art, and in its execution a science.
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[Event "rated untimed match"]
[Site "Liepzig"]
[Date "1976.??.??"]
[Round "?"]
[White "Uhlmann"]
[Black "Liebert"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "b2r2k1/p3pp1p/4n1p1/2P5/8/2P1Q1P1/P2NqP1P/2B2RK1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Rxd2 2. Bxd2 ( { White can try: } 2. Qxd2 Qf3 3. c6 Bxc6 4. Qd8+ Nxd8 5. a4 Qg2# ) 2... Ng5 3. Qxg5 ( { White owns all the dark squares, and is helpless
against attacks on the light squares.|Black's attack rages. } 3. h4 Nh3+ ( 3... Nf3+ 4. Kg2 Nxd2+ 5. Kh3 Qxf1+ { Black wins with a large material
advantage. } ) 4. Kh2 { Black wins with a large material advantage. } 4... Qxf1 { Black wins with a large material advantage. } ) 3... Qf3 4. c6 Bxc6 5. Qd5 Bxd5 6. a4 Qg2# 0-1