Victory goes to the player who makes the next-to-last mistake.
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[Event "rated untimed match"]
[Site "?"]
[Date "1961.??.??"]
[Round "?"]
[White "Nettheim"]
[Black "Hamilton"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "r1bqnrk1/ppp1p1b1/1n1p2P1/4P1p1/3P1P2/2NB4/PPP3P1/R2QK2R w KQ - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Rh8+ ( { White dare not try: } 1. Qh5 Rxf4 2. Qh7+ Kf8 3. g3 dxe5 4. gxf4 exf4 { Black wins with a large material advantage. } ) 1... Kxh8 ( { Black can try: } 1... Bxh8 2. Qh5 Nf6 3. exf6 Rxf6 4. Qh7+ Kf8 5. Qxh8# ) 2. Qh5+ Kg8 3. Qh7# 1-0