[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "1"]
[White "Izquierdo, Daniel"]
[Black "Sanchez, Marcos"]
[Result "1-0"]
[ECO "B23"]
[EventDate "1979.??.??"]
[PlyCount "81"]

1.e4 c5 2.Nc3 d6 3.f4 Nf6 4.Bc4 Nc6 5.Nf3 e6 6.f5 d5 7.exd5 exd5 8.Qe2+ 
Be7 9.Bb5 O-O 10.Bxc6 bxc6 11.O-O Bxf5 12.d3 h6 13.Ne5 Bd7 14.Bf4 Re8 15.
Rae1 Bd6 16.Qf3 d4 17.Na4 Qc7 18.Nxd7 Rxe1 19.Nxf6+ gxf6 20.Qg3+ Kh7 21.
Bxd6 Rxf1+ 22.Kxf1 Qa5 23.Nxc5 Qd2 24.Nd7 Qd1+ 25.Qe1 Qxe1+ 26.Kxe1 Kg6 
27.Nc5 Rd8 28.Bg3 f5 29.Bf2 Rd5 30.b4 a5 31.Nb3 axb4 32.Bxd4 f4 33.Bc5 Rh5
34.Bxb4 Rxh2 35.Kf2 Rh1 36.a4 Rb1 37.Bc3 Rh1 38.a5 f3 39.Kxf3 Rh4 40.a6 
Ra4 41.Ba5 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "1"]
[White "Liao, Yuan Eu"]
[Black "Santacruz, Francisco"]
[Result "1/2-1/2"]
[ECO "B35"]
[EventDate "1979.??.??"]
[PlyCount "61"]

1.e4 c5 2.Nc3 Nc6 3.Nf3 g6 4.d4 cxd4 5.Nxd4 Bg7 6.Be3 Nf6 7.Bc4 d6 8.h3 
O-O 9.Bb3 a6 10.O-O Bd7 11.Re1 b5 12.Nd5 Rc8 13.Nxc6 Bxc6 14.Bb6 Qd7 15.
Bd4 Bxd5 16.exd5 Rfe8 17.a4 Ra8 18.Qe2 Qb7 19.Ra2 Nxd5 20.Bxg7 Kxg7 21.
axb5 axb5 22.Qe4 e6 23.Rxa8 Rxa8 24.Rd1 b4 25.Bxd5 exd5 26.Rxd5 Ra1+ 27.
Kh2 Rd1 28.Rd4 Qxe4 29.Rxe4 Rd2 30.Rxb4 Rxc2 31.Kg3 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "1"]
[White "Morovic, Ivan"]
[Black "Stacchini, Angelo"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1979.??.??"]
[PlyCount "56"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.Ne5 Be6 8.
Be2 g6 9.O-O Bg7 10.c3 O-O 11.Re1 Qa5 12.Nd3 Rae8 13.Bf1 Bf5 14.Bf4 Nd7 
15.Ne5 Nxe5 16.Bxe5 Qb6 17.Qd2 Be6 18.Bxg7 Kxg7 19.h4 Rd8 20.h5 Qa5 21.h6+
Kg8 22.Qe3 Qh5 23.Be2 Qh4 24.g3 Qh3 25.Bf1 Qh5 26.Be2 Qh3 27.Bf1 Qh5 28.
Be2 Qh3 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "1"]
[White "Reyes, Juan"]
[Black "Barbero, Gerardo"]
[Result "1-0"]
[ECO "C66"]
[EventDate "1979.??.??"]
[PlyCount "67"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Re1 exd4 8.Nxd4 
O-O 9.Nf5 Bxf5 10.exf5 Nd7 11.Nd5 Bf6 12.c3 Nb6 13.Bf4 Nxd5 14.Qxd5 Qd7 
15.Rad1 Rfe8 16.Bc4 a6 17.a4 Kf8 18.Re3 Rxe3 19.fxe3 Re8 20.e4 h6 21.Rf1 
Re7 22.Bb3 Qe8 23.Re1 Qb8 24.g3 Ne5 25.Kg2 Nd7 26.Bc2 Be5 27.a5 Nf6 28.Qd2
Qe8 29.Bxh6 gxh6 30.Qxh6+ Kg8 31.Qg5+ Kh8 32.Qh6+ Nh7 33.f6 Re6 34.Qg7# 
1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "2"]
[White "Barbero, Gerardo"]
[Black "Liao, Yuan Eu"]
[Result "1-0"]
[ECO "A47"]
[EventDate "1979.??.??"]
[PlyCount "45"]

1.d4 Nf6 2.Nf3 b6 3.e3 Bb7 4.Bd3 e6 5.O-O d5 6.b3 Bd6 7.Bb2 O-O 8.Ne5 c5 
9.Nd2 Nc6 10.a3 Rc8 11.f4 cxd4 12.exd4 Ne7 13.Qe2 Bb8 14.g4 Qc7 15.Rac1 
Kh8 16.Rf3 Ng6 17.g5 Nh5 18.Rcf1 Nxe5 19.fxe5 Qe7 20.Qe3 Rce8 21.Rh3 g6 
22.Rf6 Rc8 23.Rxh5 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "2"]
[White "Fernandez, Juan A"]
[Black "Morovic, Ivan"]
[Result "0-1"]
[ECO "A48"]
[EventDate "1979.??.??"]
[PlyCount "58"]

1.d4 Nf6 2.Nf3 g6 3.Nbd2 d5 4.e3 Bg7 5.Bd3 O-O 6.O-O Bf5 7.Bxf5 gxf5 8.Ne5
Nbd7 9.f4 e6 10.Ndf3 Ne4 11.Bd2 Nxe5 12.Nxe5 Bxe5 13.fxe5 Qg5 14.Qe2 Kh8 
15.Rf4 f6 16.exf6 Rxf6 17.Raf1 Rg8 18.Be1 Rfg6 19.g3 Qh6 20.Qg2 Qh5 21.b3 
c6 22.c4 h6 23.a3 Qd1 24.cxd5 cxd5 25.Rh4 Qxb3 26.Qf3 Qxa3 27.Qf4 Kh7 28.
Kh1 Qd6 29.Qxd6 Nxd6 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "2"]
[White "Sanchez, Marcos"]
[Black "Reyes, Juan"]
[Result "0-1"]
[ECO "A08"]
[EventDate "1979.??.??"]
[PlyCount "60"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d3 d5 6.Nbd2 c5 7.e4 dxe4 8.dxe4 
Nc6 9.c3 Qc7 10.Qc2 b6 11.Nc4 Ba6 12.Bf4 Qc8 13.Nfd2 Nh5 14.Be3 Ne5 15.b3 
Qe6 16.f4 Nxc4 17.bxc4 Rad8 18.Rf3 Qd7 19.e5 Bb7 20.Ne4 Qd3 21.Qxd3 Rxd3 
22.Nxc5 bxc5 23.Bf1 Rxc3 24.Kf2 Bxf3 25.Kxf3 f6 26.e6 f5 27.Rd1 Bd4 28.Rd3
Rxd3 29.Bxd3 Bxe3 30.Kxe3 Rb8 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "2"]
[White "Stacchini, Angelo"]
[Black "Izquierdo, Daniel"]
[Result "1/2-1/2"]
[ECO "E97"]
[EventDate "1979.??.??"]
[PlyCount "66"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Be2 d6 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7 
9.Nd2 Nd7 10.b4 f5 11.f3 f4 12.c5 g5 13.Nc4 Nf6 14.a4 h5 15.h3 Ne8 16.Ba3 
Rf6 17.b5 Rh6 18.a5 Ng6 19.b6 dxc5 20.bxc7 Nxc7 21.Bxc5 Kh7 22.Ba3 Nh4 23.
Rb1 Qd7 24.Qa4 Qd8 25.Qb4 Ng6 26.Qd6 Bd7 27.Rxb7 Rc8 28.Qc5 g4 29.Nd6 Bf8 
30.Qxa7 gxh3 31.Nxc8 hxg2 32.Rxc7 Qh4 33.Rxd7+ Kh8 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "3"]
[White "Izquierdo, Daniel"]
[Black "Fernandez, Juan A"]
[Result "1-0"]
[ECO "B74"]
[EventDate "1979.??.??"]
[PlyCount "98"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 O-O 8.O-O 
Nc6 9.Nb3 Bd7 10.h3 Rc8 11.f4 a6 12.a4 Be6 13.Bf3 Na5 14.e5 Ne8 15.Nd4 Bc4
16.Rf2 dxe5 17.fxe5 Bxe5 18.Rd2 Qc7 19.Ne4 Bd5 20.b3 Nc6 21.c3 Nxd4 22.
cxd4 Bf4 23.Rd3 Bxe3+ 24.Rxe3 Bxe4 25.Bxe4 Nf6 26.Qf3 Nxe4 27.Qxe4 e6 28.
h4 Rfd8 29.h5 Rd5 30.Rh3 Qb6 31.Rd1 Rcd8 32.a5 Qxa5 33.hxg6 hxg6 34.Rh6 
Kg7 35.Rh4 Rh5 36.Rf1 Qd5 37.Qf4 Rxh4 38.Qf6+ Kh7 39.Qxh4+ Kg8 40.Rf4 Rc8 
41.Qf6 Rc1+ 42.Kh2 Qh5+ 43.Rh4 Qxh4+ 44.Qxh4 Rb1 45.Qg3 b5 46.Qf3 a5 47.
Qd3 Ra1 48.Qxb5 Ra3 49.Kg1 Ra2 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "3"]
[White "Liao, Yuan Eu"]
[Black "Sanchez, Marcos"]
[Result "1/2-1/2"]
[ECO "B07"]
[EventDate "1979.??.??"]
[PlyCount "127"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.Nge2 Nc6 7.d5 Ne5 8.O-O c6 
9.h3 cxd5 10.exd5 Bf5 11.Nd4 Bd7 12.Kh2 Nc4 13.b3 Nb6 14.Bb2 Qc8 15.Rb1 
Qc5 16.Nce2 Rac8 17.Qd2 a5 18.a4 Bf5 19.Kh1 Qb4 20.Qc1 Qc5 21.Ba3 Qc7 22.
Qd2 Ne8 23.Bb2 Qc5 24.Rbc1 Nf6 25.g4 Bd7 26.Ba1 h5 27.g5 Nh7 28.f4 Bf5 29.
Rf3 e6 30.Ng3 Qb4 31.dxe6 fxe6 32.Rd1 d5 33.Ngxf5 Rxf5 34.Qe3 Nf8 35.Nb5 
Bxa1 36.Rxa1 Nbd7 37.Re1 e5 38.Rf2 exf4 39.Qe7 Qxe7 40.Rxe7 Rxg5 41.Nd6 
Rc6 42.Nf7 Rg3 43.Bxd5 Rxh3+ 44.Kg1 Rg3+ 45.Kf1 Rf6 46.Ne5+ Kh8 47.Nxd7 
Nxd7 48.Rxd7 f3 49.Bxb7 Rh3 50.Ke1 g5 51.Bd5 g4 52.Rd8+ Kh7 53.Rd7+ Kh6 
54.c4 Rf4 55.Rd6+ Kg5 56.Rd8 Rd4 57.Rg8+ Kh4 58.Bxf3 Rxf3 59.Rxf3 gxf3 60.
Kf2 Rd3 61.Rb8 Kg4 62.Rg8+ Kf4 63.Rf8+ Kg4 64.Rg8+ 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "3"]
[White "Reyes, Juan"]
[Black "Stacchini, Angelo"]
[Result "0-1"]
[ECO "C06"]
[EventDate "1979.??.??"]
[PlyCount "82"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.O-O Bd6 11.Nf3 Qc7 12.Bg5 O-O 13.Rc1 Bd7 14.a3 Be8 15.b4 a6
16.Ng3 h6 17.Bd2 Qb6 18.Bc3 Nh5 19.Ne5 Nf4 20.Bb1 Bxe5 21.dxe5 Bg6 22.Bxg6
Nxg6 23.Qh5 Nf4 24.Qd1 Rad8 25.Ba1 Rf7 26.Kh1 Rdf8 27.f3 Qd8 28.Ne2 Ng6 
29.Nd4 Nxd4 30.Bxd4 Rf5 31.Qe2 Qh4 32.Qe3 Rh5 33.h3 Rf4 34.Qd3 Rff5 35.
Rc8+ Kh7 36.Kg1 Nf4 37.Qc2 Qg3 38.Rc1 Rxh3 39.Kf1 Rh1+ 40.Bg1 Qh2 41.Qf2 
Nh3 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "3"]
[White "Santacruz, Francisco"]
[Black "Barbero, Gerardo"]
[Result "1/2-1/2"]
[ECO "E11"]
[EventDate "1979.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.e3 O-O 6.Be2 b6 7.O-O Bxd2 8.Nbxd2
Bb7 9.Qc2 c5 10.Rfd1 Nc6 11.a3 Rac8 12.b3 Rfd8 13.Qb2 cxd4 14.Nxd4 Nxd4 
15.Qxd4 d5 16.Qb2 Ba6 17.Rac1 Rc7 18.Bf1 Rdc8 19.cxd5 Bxf1 20.Kxf1 Nxd5 
21.Rxc7 Qxc7 22.Nf3 h6 23.Rd4 Qc1+ 24.Qxc1 Rxc1+ 25.Ke2 Ra1 26.a4 g5 27.
Nd2 Kf8 28.Kd3 Ke7 29.h4 f5 30.hxg5 hxg5 31.g4 Nf6 32.gxf5 exf5 33.Ke2 Rh1
34.Nf1 Ne4 35.Ng3 Nxg3+ 36.fxg3 Rb1 37.b4 Ke6 38.Kf2 g4 39.b5 Rb2+ 40.Kf1 
Ra2 41.Rf4 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "4"]
[White "Fernandez, Juan A"]
[Black "Reyes, Juan"]
[Result "0-1"]
[ECO "A48"]
[EventDate "1979.??.??"]
[PlyCount "78"]

1.d4 Nf6 2.Nf3 g6 3.e3 Bg7 4.Bd3 d5 5.Nbd2 O-O 6.O-O c5 7.c3 Bf5 8.Qe2 
Bxd3 9.Qxd3 Nbd7 10.e4 dxe4 11.Nxe4 cxd4 12.Nxd4 Nxe4 13.Qxe4 Nc5 14.Qg4 
e5 15.Nf3 e4 16.Ng5 f6 17.Be3 h5 18.Qh3 fxg5 19.Bxc5 Rf5 20.Rfd1 Qe8 21.
Qe3 Be5 22.Bd6 Bf4 23.Bxf4 gxf4 24.Qd4 f3 25.g3 Rf7 26.Rd2 Qe6 27.Kf1 Qh3+
28.Ke1 Qxh2 29.Rdd1 Re8 30.Kd2 e3+ 31.Kc2 Qxf2+ 32.Kb3 Re6 33.Qxa7 Qxg3 
34.Rd8+ Kg7 35.Rad1 Qc7 36.Qa8 e2 37.Rg8+ Kf6 38.Rd3 Qb6+ 39.Kc2 e1=N+ 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "4"]
[White "Morovic, Ivan"]
[Black "Izquierdo, Daniel"]
[Result "1-0"]
[ECO "B72"]
[EventDate "1979.??.??"]
[PlyCount "45"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 O-O 8.Qd2 
Nc6 9.O-O-O Bd7 10.h4 Rc8 11.h5 Nxd4 12.Bxd4 Qa5 13.Kb1 e5 14.h6 exd4 15.
hxg7 dxc3 16.gxf8=Q+ Rxf8 17.Qd4 Be6 18.a3 Rc8 19.Qxf6 h5 20.Rxd6 Qc5 21.
Rhd1 cxb2 22.Rd8+ Kh7 23.Qh8# 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "4"]
[White "Sanchez, Marcos"]
[Black "Santacruz, Francisco"]
[Result "0-1"]
[ECO "B80"]
[EventDate "1979.??.??"]
[PlyCount "44"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be3 e6 7.Be2 Be7 8.O-O 
a6 9.a3 O-O 10.Kh1 Qc7 11.f4 Bd7 12.Nb3 b5 13.Qe1 Rfd8 14.Qg3 b4 15.axb4 
Nxb4 16.Rac1 d5 17.Bd4 a5 18.exd5 exd5 19.Qe3 Re8 20.Bb6 Qc8 21.Bxa5 Bd8 
22.Qd4 Nc6 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "4"]
[White "Stacchini, Angelo"]
[Black "Liao, Yuan Eu"]
[Result "0-1"]
[ECO "E11"]
[EventDate "1979.??.??"]
[PlyCount "106"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 O-O 5.a3 Bxd2+ 6.Qxd2 b6 7.b4 Bb7 8.e3 
d6 9.Bb2 Nbd7 10.Bd3 Qe7 11.O-O e5 12.Be2 Rfe8 13.Qc2 Rac8 14.a4 e4 15.Nd2
c5 16.bxc5 bxc5 17.d5 Rb8 18.Rab1 Ba6 19.Qc3 Qd8 20.Bd1 Rb4 21.Ba3 Rxb1 
22.Nxb1 Ne5 23.Nd2 Qd7 24.Bb2 Qf5 25.Bc2 Qg4 26.Bd1 Qh4 27.Qc2 Neg4 28.h3 
Ne5 29.Bxe5 Rxe5 30.f4 exf3 31.Nxf3 Qxc4 32.Qxc4 Bxc4 33.Nxe5 Bxf1 34.Nxf7
Kxf7 35.Kxf1 Ke7 36.Bf3 Nd7 37.Be4 h6 38.Ke2 Ne5 39.Kd2 Kd7 40.Bd3 Kc7 41.
Kc3 Nxd3 42.Kxd3 Kd7 43.Ke4 Ke7 44.Kf5 Kf7 45.h4 g6+ 46.Kf4 Kf6 47.g3 g5+ 
48.Ke4 Kg6 49.hxg5 hxg5 50.a5 a6 51.g4 Kf6 52.Kd3 Ke5 53.e4 Kf4 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "5"]
[White "Barbero, Gerardo"]
[Black "Sanchez, Marcos"]
[Result "1-0"]
[ECO "D53"]
[EventDate "1979.??.??"]
[PlyCount "53"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 Nbd7 6.cxd5 Nxd5 7.Bxe7 Qxe7 8.
Nxd5 exd5 9.Rc1 Qb4+ 10.Qd2 Qxd2+ 11.Kxd2 c6 12.Bd3 Nf6 13.Ne2 Be6 14.f3 
Ke7 15.g4 Nd7 16.Nf4 f6 17.Nxe6 Kxe6 18.h4 g6 19.b4 a6 20.a4 f5 21.gxf5+ 
gxf5 22.Rcg1 Rhg8 23.Rg5 Raf8 24.Bxf5+ Rxf5 25.Rxg8 Rxf3 26.Ke2 Rf5 27.Rf1
1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "5"]
[White "Liao, Yuan Eu"]
[Black "Fernandez, Juan A"]
[Result "1-0"]
[ECO "B82"]
[EventDate "1979.??.??"]
[PlyCount "57"]

1.e4 c5 2.Nc3 Nc6 3.Nf3 d6 4.d4 cxd4 5.Nxd4 e6 6.Be3 Be7 7.f4 Nf6 8.Nb3 
O-O 9.Qf3 a6 10.Bd3 Qc7 11.O-O Bd7 12.g4 Rfd8 13.g5 Ne8 14.f5 exf5 15.Nd5 
Qb8 16.exf5 f6 17.Qh5 fxg5 18.f6 Nxf6 19.Rxf6 Bxf6 20.Bxh7+ Kf8 21.Rf1 Be6
22.Nxf6 gxf6 23.Qxg5 Ne5 24.Qxf6+ Bf7 25.Qe6 Kg7 26.Qh6+ Kh8 27.Bg6+ Kg8 
28.Qh7+ Kf8 29.Rxf7+ 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "5"]
[White "Reyes, Juan"]
[Black "Morovic, Ivan"]
[Result "0-1"]
[ECO "B49"]
[EventDate "1979.??.??"]
[PlyCount "130"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be2 a6 7.O-O Nf6 8.Be3 
Bb4 9.Bd3 O-O 10.Nxc6 bxc6 11.Ne2 d5 12.Ng3 e5 13.c3 Be7 14.Qc2 Be6 15.
Rae1 Rad8 16.b3 a5 17.c4 d4 18.Bc1 Nd7 19.f4 exf4 20.Bxf4 Ne5 21.Nf5 f6 
22.Bxe5 fxe5 23.Rf3 Bb4 24.Ref1 g6 25.Ng3 Rxf3 26.Rxf3 Rf8 27.Qe2 Rxf3 28.
Qxf3 Qe7 29.Nf1 Be1 30.h3 Qg5 31.Nh2 Kg7 32.Qe2 Qc1 33.Nf1 h5 34.Bc2 Qa1 
35.Bd1 Bc3 36.Qc2 a4 37.Kh2 a3 38.Nd2 Bb2 39.Qb1 Qxb1 40.Nxb1 Kf6 41.Kg3 
Bc1 42.Be2 c5 43.Bd1 Bf7 44.Kf3 Be6 45.Kg3 Bd7 46.Be2 Bc6 47.Bd3 g5 48.Kf3
h4 49.Ke2 g4 50.hxg4 Kg5 51.Kd1 Bb2 52.Nd2 Kxg4 53.Ke2 Kf4 54.Nf3 Bxe4 55.
Bxe4 Kxe4 56.Nxh4 Bc3 57.Ng6 d3+ 58.Kd1 Ke3 59.Ne7 e4 60.Nd5+ Kd4 61.Nc7 
Bb4 62.Nb5+ Ke5 63.Na7 Ke6 64.Nc6 Bc3 65.Nd8+ Kf6 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "5"]
[White "Santacruz, Francisco"]
[Black "Stacchini, Angelo"]
[Result "0-1"]
[ECO "C06"]
[EventDate "1979.??.??"]
[PlyCount "62"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 
Nb6 9.O-O Bd7 10.a3 a5 11.f4 g6 12.Nf3 h5 13.Bd2 a4 14.Rc1 Na7 15.Ng5 Rh6 
16.Nc3 Rc8 17.Qe2 Nc4 18.Bxc4 Rxc4 19.Nge4 Qb6 20.Nf6+ Kd8 21.Kh1 Bb5 22.
Qe1 Nc6 23.Ncxd5 exd5 24.Rxc4 Bxc4 25.e6 Qc7 26.f5 Bxf1 27.Nxd5 Qd6 28.
Ba5+ Kc8 29.Qxf1 Qxd5 30.fxg6 Rxg6 31.e7 Bxe7 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "6"]
[White "Fernandez, Juan A"]
[Black "Santacruz, Francisco"]
[Result "1/2-1/2"]
[ECO "A48"]
[EventDate "1979.??.??"]
[PlyCount "74"]

1.d4 Nf6 2.Nf3 g6 3.Nbd2 d5 4.e3 Bg7 5.Bd3 O-O 6.O-O c5 7.c3 Bf5 8.Qc2 
Bxd3 9.Qxd3 Nbd7 10.e4 dxe4 11.Nxe4 Nxe4 12.Qxe4 cxd4 13.cxd4 b6 14.Re1 
Rc8 15.Bg5 Nf6 16.Qh4 Nd5 17.Rad1 Re8 18.Rd3 Bf6 19.Ne5 Bxg5 20.Qxg5 Nf6 
21.d5 Rc2 22.h4 Qd6 23.g4 Qb4 24.Ree3 Qxb2 25.Qf4 Qc1+ 26.Kg2 Rxa2 27.Nxf7
Ra1 28.Nh6+ Kg7 29.Qh2 Qf1+ 30.Kf3 Nd7 31.g5 Ra2 32.Ng4 Qa1 33.Qc7 Qh1+ 
34.Kg3 Qg1+ 35.Kh3 Qh1+ 36.Qh2 Qf1+ 37.Qg2 Qa1 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "6"]
[White "Izquierdo, Daniel"]
[Black "Reyes, Juan"]
[Result "0-1"]
[ECO "C45"]
[EventDate "1979.??.??"]
[PlyCount "44"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4 d6 8.O-O 
O-O 9.f4 Kh8 10.g4 Ng6 11.g5 Qe7 12.Nd2 f5 13.Qh5 Bxd4 14.cxd4 fxe4 15.
Rae1 Bf5 16.Rf2 Qd7 17.Rg2 d5 18.Be2 Nb4 19.Bg4 Nc2 20.Bxf5 Qxf5 21.Nf1 
Nxe1 22.Ng3 Nxf4 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "6"]
[White "Morovic, Ivan"]
[Black "Liao, Yuan Eu"]
[Result "1/2-1/2"]
[ECO "B84"]
[EventDate "1979.??.??"]
[PlyCount "44"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 a6 7.O-O Be7 8.f4 Qc7
9.Kh1 O-O 10.Qe1 Re8 11.Qg3 Nbd7 12.a4 Bf8 13.Bd3 b6 14.Bd2 Bb7 15.Rae1 
Nc5 16.Qh3 Rad8 17.b4 Nxd3 18.cxd3 e5 19.Nf5 exf4 20.Rc1 Qd7 21.Bxf4 Rc8 
22.Bg5 Qe6 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "6"]
[White "Stacchini, Angelo"]
[Black "Barbero, Gerardo"]
[Result "0-1"]
[ECO "A44"]
[EventDate "1979.??.??"]
[PlyCount "130"]

1.d4 c5 2.d5 e5 3.c4 d6 4.e4 Be7 5.Nf3 Bg4 6.Nc3 Bxf3 7.Qxf3 Bg5 8.g3 Bxc1
9.Rxc1 Nh6 10.Bh3 O-O 11.O-O f5 12.exf5 Nxf5 13.Bxf5 g6 14.Qe3 Rxf5 15.Ne4
Qe7 16.b4 b6 17.bxc5 dxc5 18.a4 a5 19.Rb1 Nd7 20.Kg2 Raf8 21.f3 Kg7 22.Rf2
h6 23.Rh1 R8f7 24.Rb1 Kh7 25.Kf1 Qf8 26.Ke2 Kh8 27.Rh1 Nf6 28.Rb1 Nxe4 29.
Qxe4 R7f6 30.Rb3 Qe8 31.Rb5 g5 32.Rxb6 Qxa4 33.Rxf6 Rxf6 34.Kf1 Qa1+ 35.
Kg2 Qd4 36.Re2 Qxe4 37.Rxe4 a4 38.Rxe5 Ra6 39.d6 Rxd6 40.Rxc5 Ra6 41.Re5 
a3 42.Re1 a2 43.Ra1 Kg7 44.Kf2 Ra3 45.h4 gxh4 46.g4 Kg6 47.f4 h5 48.gxh5+ 
Kxh5 49.c5 Kg4 50.c6 h3 51.c7 Ra8 52.c8=Q+ Rxc8 53.Rxa2 Rc1 54.Ke3 Re1+ 
55.Kd4 Kxf4 56.Rb2 Rd1+ 57.Kc4 Kg3 58.Rb3+ Kg2 59.Rb8 h2 60.Rg8+ Kf3 61.
Rf8+ Kg4 62.Rg8+ Kf5 63.Rf8+ Kg6 64.Rg8+ Kf7 65.Rg1 hxg1=Q 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "7"]
[White "Barbero, Gerardo"]
[Black "Fernandez, Juan A"]
[Result "1-0"]
[ECO "B21"]
[EventDate "1979.??.??"]
[PlyCount "81"]

1.e4 c5 2.f4 d6 3.Nf3 Nf6 4.Bb5+ Bd7 5.Bxd7+ Qxd7 6.d3 Nc6 7.O-O g6 8.c4 
Bg7 9.Nc3 O-O 10.h3 e6 11.Be3 b6 12.Kh2 d5 13.e5 Ne8 14.cxd5 exd5 15.d4 
Rd8 16.Qe1 Nc7 17.Rd1 cxd4 18.Bxd4 f6 19.exf6 Nxd4 20.fxg7 Nxf3+ 21.Rxf3 
Qxg7 22.Qh4 Qf6 23.Qxf6 Rxf6 24.g4 Kg7 25.Kg3 Rc6 26.Rfd3 Rcd6 27.Rd4 a6 
28.a4 a5 29.f5 gxf5 30.gxf5 Kf7 31.Kf4 Rh6 32.Ne4 Rc6 33.Ng5+ Ke7 34.Rg1 
Rd7 35.Nf3 Kf8 36.Ne5 Rdd6 37.Nxc6 Rxc6 38.Rg2 Kf7 39.Ke5 Rh6 40.Rc2 Ne8 
41.h4 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "7"]
[White "Liao, Yuan Eu"]
[Black "Izquierdo, Daniel"]
[Result "1-0"]
[ECO "B07"]
[EventDate "1979.??.??"]
[PlyCount "55"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.Nge2 e5 7.h3 Nc6 8.Be3 Bd7 
9.O-O Qc8 10.Kh2 Ne8 11.f4 f5 12.exf5 gxf5 13.fxe5 dxe5 14.Qd2 e4 15.Nd5 
Be6 16.Ndf4 Bf7 17.b3 Qd7 18.Rad1 Rd8 19.c4 Qe7 20.Qc1 Nb8 21.d5 c5 22.Qa3
b6 23.Nd4 Qg5 24.h4 Qe7 25.Nxf5 Qc7 26.Qc1 Be5 27.Nh6+ Kg7 28.Nxf7 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "7"]
[White "Sanchez, Marcos"]
[Black "Stacchini, Angelo"]
[Result "0-1"]
[ECO "D45"]
[EventDate "1979.??.??"]
[PlyCount "100"]

1.Nf3 d5 2.d4 Nf6 3.c4 c6 4.e3 e6 5.a3 Nbd7 6.Nc3 Bd6 7.cxd5 exd5 8.Bd3 
O-O 9.Ng5 Re8 10.Qf3 Nf8 11.Qd1 Bg4 12.Nf3 Ne4 13.h3 Bh5 14.Qc2 f5 15.Be2 
Qf6 16.O-O Re7 17.Nxe4 fxe4 18.Nh2 Qg5 19.Bxh5 Qxh5 20.Qd1 Qh6 21.Ng4 Qg6 
22.f4 exf3 23.Qxf3 Qd3 24.b4 Ne6 25.Ra2 Ng5 26.Qf5 Ne4 27.Qf3 Qc4 28.Rb2 
Ng3 29.Re1 Rf8 30.Qd1 Ref7 31.Rf2 h5 32.Rxf7 Rxf7 33.Nf2 Qa2 34.Qd2 Qb1 
35.Qd3 Qxd3 36.Nxd3 Ne4 37.Nf4 Bxf4 38.exf4 g6 39.g4 hxg4 40.hxg4 Rh7 41.
Kg2 Rh4 42.g5 Kf7 43.Rh1 Rxh1 44.Kxh1 Ke6 45.Kg2 Kf5 46.Kf3 Nd6 47.Ke3 Kg4
48.a4 b5 49.axb5 cxb5 50.Kd3 Nf5 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "7"]
[White "Santacruz, Francisco"]
[Black "Morovic, Ivan"]
[Result "0-1"]
[ECO "A26"]
[EventDate "1979.??.??"]
[PlyCount "48"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 e5 7.d3 Nc6 8.Bd2 Re8 
9.Rb1 a5 10.a3 Bf5 11.Nh4 Bd7 12.b4 axb4 13.axb4 Qc8 14.b5 Nd4 15.e3 Ne6 
16.f4 exf4 17.gxf4 Nc5 18.Qc2 Bh3 19.Rf3 Bxg2 20.Nxg2 Qf5 21.e4 Qh5 22.
Rbf1 Ra1 23.Rxa1 Qxf3 24.Be3 Ng4 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "8"]
[White "Fernandez, Juan A"]
[Black "Sanchez, Marcos"]
[Result "0-1"]
[ECO "D02"]
[EventDate "1979.??.??"]
[PlyCount "74"]

1.d4 e6 2.Nf3 d5 3.Nbd2 c5 4.e3 Nc6 5.c3 a6 6.Bd3 c4 7.Bc2 f5 8.Ne5 Nxe5 
9.dxe5 Qc7 10.f4 Bc5 11.Nf3 Nh6 12.O-O O-O 13.Nd4 Qe7 14.Rf3 Kh8 15.Rg3 
Bd7 16.Qh5 b5 17.a3 a5 18.Bd2 b4 19.a4 Qe8 20.Qg5 Ng4 21.Rxg4 fxg4 22.Rf1 
b3 23.Bb1 g6 24.Qxg4 Bxd4 25.exd4 Bxa4 26.Rf3 Ra7 27.Rh3 Kg8 28.Be1 Qf7 
29.Rf3 Bd7 30.Bh4 Qg7 31.Rh3 a4 32.Bf6 Rxf6 33.exf6 Qxf6 34.Rh6 e5 35.Qf3 
e4 36.Qf1 Kg7 37.g4 Bxg4 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "8"]
[White "Izquierdo, Daniel"]
[Black "Santacruz, Francisco"]
[Result "0-1"]
[ECO "B23"]
[EventDate "1979.??.??"]
[PlyCount "88"]

1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bc4 e6 6.e5 d5 7.exd6 Qxd6 8.Ne4 Qe7
9.O-O Nf6 10.d3 O-O 11.Qe1 b6 12.Qh4 Bb7 13.Nf2 Nd5 14.Ng5 h6 15.Bxd5 hxg5
16.fxg5 exd5 17.Ng4 Nd4 18.Nf6+ Bxf6 19.gxf6 Qe2 20.Bh6 Qh5 21.Qxh5 gxh5 
22.c3 Ne2+ 23.Kf2 Rfe8 24.g4 hxg4 25.Rae1 Re6 26.Rxe2 Rxf6+ 27.Kg1 Rxh6 
28.Re7 Ba6 29.Rfxf7 Bxd3 30.Rg7+ Kh8 31.Rxg4 Rg6 32.Rxg6 Bxg6 33.Kg2 d4 
34.cxd4 cxd4 35.Rd7 d3 36.a3 Re8 37.Kf3 Re2 38.Rd8+ Kg7 39.Rd7+ Kh6 40.b4 
Rxh2 41.Ke3 Re2+ 42.Kd4 Ra2 43.Kc3 Rxa3+ 44.Kb2 Ra4 0-1

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "8"]
[White "Morovic, Ivan"]
[Black "Barbero, Gerardo"]
[Result "1-0"]
[ECO "B92"]
[EventDate "1979.??.??"]
[PlyCount "79"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nf3 Be7 8.Bg5 
Nbd7 9.O-O h6 10.Bxf6 Nxf6 11.Bc4 O-O 12.Re1 b5 13.Bb3 Be6 14.Nd5 Nxd5 15.
Bxd5 Rc8 16.c3 Rc5 17.Bb3 Qb6 18.Re3 Bc4 19.Bxc4 bxc4 20.b4 cxb3 21.axb3 
Rfc8 22.c4 Ra5 23.Ne1 Rb8 24.Nc2 Kf8 25.Rd3 Rxa1 26.Qxa1 Qc6 27.f3 Qc5+ 
28.Kh1 Qf2 29.Qd1 a5 30.Rxd6 g6 31.Rd2 Qc5 32.Rd5 Qf2 33.Rd2 Qa7 34.Rd7 
Qa6 35.Ne3 a4 36.bxa4 Bc5 37.Qd5 Rb1+ 38.Nd1 Be7 39.Qxe5 Bf6 40.Qd5 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "8"]
[White "Reyes, Juan"]
[Black "Liao, Yuan Eu"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1979.??.??"]
[PlyCount "119"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.O-O a6 8.f4 Qc7
9.Kh1 O-O 10.Bf3 Nc6 11.Be3 Rd8 12.Qe1 Nxd4 13.Bxd4 e5 14.Be3 b5 15.Rd1 
Bb7 16.Qf2 Rdc8 17.a3 Bc6 18.Qg3 Kh8 19.Rf2 Rab8 20.Nd5 Bxd5 21.fxe5 dxe5 
22.exd5 Bd6 23.Qh3 Bc5 24.Bxc5 Qxc5 25.Rfd2 Rd8 26.Qf5 Qd6 27.Re2 Re8 28.
Rde1 g6 29.Qg5 Nd7 30.Bg4 f6 31.Qh6 Qf8 32.Qxf8+ Nxf8 33.Rd2 f5 34.Be2 Nd7
35.c4 bxc4 36.Bxc4 Rb6 37.b4 Rc8 38.Bb3 e4 39.Ba4 Ne5 40.h3 Kg7 41.d6 Nc4 
42.d7 Rd8 43.Rc2 Ne5 44.Rc8 Nf7 45.Rd1 Rb7 46.Kg1 Ra7 47.Bc6 Kf6 48.a4 Ke7
49.Rd5 h6 50.Kf1 Ke6 51.Ra5 Rdxd7 52.Bxd7+ Rxd7 53.Rxa6+ Ke5 54.Rc1 Kf4 
55.Rac6 Ne5 56.R6c2 Nd3 57.Rb1 Rd4 58.b5 Nb4 59.Rcb2 Nd5 60.b6 1-0

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "9"]
[White "Barbero, Gerardo"]
[Black "Izquierdo, Daniel"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1979.??.??"]
[PlyCount "15"]

1.h4 b5 2.a4 b4 3.d4 Bb7 4.Nf3 Nf6 5.Bg5 e6 6.Nbd2 h6 7.Bxf6 Qxf6 8.e4 
1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "9"]
[White "Sanchez, Marcos"]
[Black "Morovic, Ivan"]
[Result "1/2-1/2"]
[ECO "E61"]
[EventDate "1979.??.??"]
[PlyCount "16"]

1.c4 Nf6 2.Nf3 g6 3.d4 Bg7 4.Nc3 O-O 5.e3 d6 6.Be2 Nbd7 7.O-O e5 8.dxe5 
dxe5 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "9"]
[White "Santacruz, Francisco"]
[Black "Reyes, Juan"]
[Result "1/2-1/2"]
[ECO "A56"]
[EventDate "1979.??.??"]
[PlyCount "72"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Bd3 Nbd7 7.Nge2 a6 8.a4 a5 9.
O-O h6 10.f4 b6 11.Ng3 exf4 12.Bxf4 Ne5 13.Bxe5 dxe5 14.Nb5 Bd6 15.Nh5 
Nxh5 16.Qxh5 O-O 17.Rf2 Ba6 18.Nxd6 Qxd6 19.Raf1 Ra7 20.Qh4 f6 21.Be2 Bc8 
22.b3 Re7 23.Bh5 Bd7 24.Bg6 Be8 25.Qh5 Qd8 26.g4 Rd7 27.h4 Bf7 28.g5 Qe8 
29.Bxf7+ Qxf7 30.Qxf7+ Rdxf7 31.gxf6 Rxf6 32.Rxf6 gxf6 33.Kh2 Kf7 34.h5 
Rg8 35.Rg1 Rg5 36.Rxg5 fxg5 1/2-1/2

[Event "5th Pan-American U20"]
[Site "Mercedes ARG"]
[Date "1979.12.??"]
[Round "9"]
[White "Stacchini, Angelo"]
[Black "Fernandez, Juan A"]
[Result "1-0"]
[ECO "A01"]
[EventDate "1979.??.??"]
[PlyCount "57"]

1.b3 Nf6 2.Bb2 g6 3.e4 d6 4.g3 Bg7 5.Bg2 O-O 6.Ne2 e5 7.O-O Nbd7 8.c4 Nc5 
9.Nbc3 c6 10.d4 exd4 11.Nxd4 Re8 12.Qc2 Qc7 13.Rad1 Bd7 14.b4 Ne6 15.Nb3 
Rad8 16.Kh1 Bc8 17.a3 Nf8 18.h3 Be6 19.Qe2 N6d7 20.f4 f5 21.Rfe1 fxe4 22.
Nxe4 d5 23.Bxg7 Kxg7 24.Qb2+ Kg8 25.cxd5 Bxd5 26.Nbc5 h6 27.Qc3 Re7 28.
Nxd7 Nxd7 29.Rxd5 1-0

