Victory goes to the player who makes the next-to-last mistake.
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[Event "rated untimed match"]
[Site "Spain"]
[Date "2014.??.??"]
[Round "?"]
[White "Barrero"]
[Black "Zuniga"]
[Result "*"]
[BlackElo "0"]
[FEN "6k1/4qp2/1p2P3/1PrB1Q1p/2n3p1/P1p1P1P1/4PK1P/5R2 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Rxd5 2. Qxd5 ( { White can try: } 2. exf7+ Qxf7 3. Qxf7+ Kxf7 4. Kg1+ Ke6 5. Rc1 Nxa3 6. Rxc3 Nxb5 { Black wins with a large material advantage. } ) 2... Qf6+ 3. Kg1 Qxf1+ 4. Kxf1 Nxe3+ 5. Kf2 Nxd5 { Black wins with a large material
advantage. } *