Viktor Korchnoi

No Chess Grandmaster is normal; they only differ in the extent of their madness.

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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown315"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "q1b1R1R1/5k1p/p3p3/np1p4/2p5/1P6/P1P2PPP/6K1 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]

1. Ref8+ Ke7 2. Rxc8 Qxc8 3. Rxc8 { White wins with a large material
advantage. } 1-0