1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. f4 Qc7 9. f5 Bc4 10. a4 Nbd7 11. Be3 Be7 12. a5 O-O 13. O-O b5 14. axb6 Nxb6 15. Kh1 Rfc8 16. Bxb6 Qxb6 17. Bxc4 Rxc4 18. Qe2 Rac8 19. Ra2 Bd8 20. Rfa1 Qb7 21. Ra4 Rxa4 1/2-1/2

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Opening: Sicilian, Najdorf, Opocensky Variation (B92)
Player profiles: Karpov, R Byrne

Novelty of stem-game: 10. ...Nd7

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6  8. f4 Qc7  9. f5 Bc4  10. a4

page 1 of 1; 2 games    Game   Result Moves Year Event/Locale Opening 1. Schmid vs K Pytel   ½-½ 60 1973 EU-chT (Men) B92 Sicilian, Najdorf, Opocensky Variation 2. Karpov vs R Byrne ½-½ 21 1973 Leningrad Interzonal B92 Sicilian, Najdorf, Opocensky Variation

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1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6  8. f4 Qc7  9. f5 Bc4

page 1 of 1; 9 games    Game   Result Moves Year Event/Locale Opening 1. Ivkov vs Larry Evans   ½-½ 47 1958 13th olm final A B92 Sicilian, Najdorf, Opocensky Variation 2. Smyslov vs Portisch 0-1 42 1971 Portoroz B92 Sicilian, Najdorf, Opocensky Variation 3. Tal vs H Pohla   1-0 42 1971 Piarnu B92 Sicilian, Najdorf, Opocensky Variation 4. Karasev vs Bronstein   1-0 42 1971 USSR Championship B92 Sicilian, Najdorf, Opocensky Variation 5. Robatsch vs Ribli   0-1 28 1972 Helsinki zt B92 Sicilian, Najdorf, Opocensky Variation 6. P Haba vs Ivanchuk 0-1 47 1988 Thessaloniki olm B92 Sicilian, Najdorf, Opocensky Variation 7. P Haba vs L Zimniok   ½-½ 44 2001 open B92 Sicilian, Najdorf, Opocensky Variation 8. Short vs D Louw   ½-½ 30 2001 Waterglen Simul B92 Sicilian, Najdorf, Opocensky Variation 9. Ruan Lufei vs E Yanik   1-0 55 2008 Mindsports B92 Sicilian, Najdorf, Opocensky Variation

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1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6  8. f4 Qc7

page 1 of 2; games 1-25 of 36  Game   Result Moves Year Event/Locale Opening 1. A Shmit vs Tal 0-1 35 1971 Riga B92 Sicilian, Najdorf, Opocensky Variation 2. Karpov vs Bronstein 1-0 53 1971 Moscow B92 Sicilian, Najdorf, Opocensky Variation 3. Kaplan vs Saidy   ½-½ 69 1972 San Antonio B92 Sicilian, Najdorf, Opocensky Variation 4. M C Lopez vs Browne 1-0 61 1972 San Antonio B92 Sicilian, Najdorf, Opocensky Variation 5. Karpov vs Mecking 1-0 34 1972 Hastings 1971/72 B92 Sicilian, Najdorf, Opocensky Variation 6. I A Horowitz vs Popovych   1-0 37 1972 US Championship B92 Sicilian, Najdorf, Opocensky Variation 7. J Kostro vs W Schmidt   0-1 40 1972 POL-ch 29th B92 Sicilian, Najdorf, Opocensky Variation 8. Adorjan vs M Stean   ½-½ 23 1973 Ch Europe (team) B92 Sicilian, Najdorf, Opocensky Variation 9. V S Korensky vs Rashkovsky   0-1 40 1973 Sochi B92 Sicilian, Najdorf, Opocensky Variation 10. Tseshkovsky vs N R Zilberstein   1-0 56 1973 RUS-ch B92 Sicilian, Najdorf, Opocensky Variation 11. Rashkovsky vs L Gutman   1-0 23 1974 USSR B92 Sicilian, Najdorf, Opocensky Variation 12. Gipslis vs E Kengis   1-0 31 1974 USSR B92 Sicilian, Najdorf, Opocensky Variation 13. F Lucas vs Carlson   1-0 27 1974 corr B92 Sicilian, Najdorf, Opocensky Variation 14. Nickoloff vs R Stewart   1-0 49 1974 CAN-ch U18 B92 Sicilian, Najdorf, Opocensky Variation 15. D Gurevich vs Balashov   1-0 43 1974 USSR 17/507 B92 Sicilian, Najdorf, Opocensky Variation 16. Van der Sterren vs Y Gruenfeld   1-0 34 1974 EU-ch U20 fin-A B92 Sicilian, Najdorf, Opocensky Variation 17. Adorjan vs Browne   1-0 30 1974 Wijk aan Zee (Netherlands) B92 Sicilian, Najdorf, Opocensky Variation 18. Vogt vs Tal   ½-½ 29 1974 Lublin 19/460 B92 Sicilian, Najdorf, Opocensky Variation 19. Tringov vs Minic   1-0 30 1975 Rovinj/Zagreb B92 Sicilian, Najdorf, Opocensky Variation 20. S Tatai vs R T Cardoso   ½-½ 41 1975 Las Palmas Ruy Lopez mem B92 Sicilian, Najdorf, Opocensky Variation 21. K Hulak vs Ljubojevic   ½-½ 41 1977 Jugoslavien B92 Sicilian, Najdorf, Opocensky Variation 22. R Gonzalez vs A Colls   1-0 46 1995 ESP corr B92 Sicilian, Najdorf, Opocensky Variation 23. Y Kruppa vs S Yuferov   1-0 42 1996 Petrov mem B92 Sicilian, Najdorf, Opocensky Variation 24. D Blazek vs P Kopecky   0-1 49 1997 CZE-chT1b 9697 B92 Sicilian, Najdorf, Opocensky Variation 25. D Boros vs D Berczes 1-0 19 2001 FSFM June B92 Sicilian, Najdorf, Opocensky Variation  page 1 of 2; games 1-25 of 36

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1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6  8. f4

page 1 of 1; 14 games    Game   Result Moves Year Event/Locale Opening 1. A M Giustolisi vs Puc   1-0 29 1951 Venezia B92 Sicilian, Najdorf, Opocensky Variation 2. Kudrin vs A Lein   1-0 40 1983 Ch USA B92 Sicilian, Najdorf, Opocensky Variation 3. Keith G Flanagan vs R Keely   0-1 43 2001 27th Open B92 Sicilian, Najdorf, Opocensky Variation 4. Z Goutioudis vs H Papadopoulos   1-0 46 2001 3rd Open B92 Sicilian, Najdorf, Opocensky Variation 5. K Spraggett vs E Ubilava   1-0 50 2001 IV It B92 Sicilian, Najdorf, Opocensky Variation 6. R Degerhammar vs W Krzyzanowski   ½-½ 31 2002 ICCF - corr B92 Sicilian, Najdorf, Opocensky Variation 7. N Bojkovic vs I Zakurdjaeva   0-1 68 2005 6th European Individual Women's Championship B92 Sicilian, Najdorf, Opocensky Variation 8. Yifan Hou vs Ju Wenjun   1-0 40 2006 Chinese Championships B92 Sicilian, Najdorf, Opocensky Variation 9. H Messing vs M Videkovic   1-0 32 2007 14th Open Belisce Metalis B92 Sicilian, Najdorf, Opocensky Variation 10. Wang Hao vs A Adly   1-0 60 2007 World Junior Championship B92 Sicilian, Najdorf, Opocensky Variation 11. V Meijers vs J Lopez   1-0 52 2008 2008 Olympiad B92 Sicilian, Najdorf, Opocensky Variation 12. S Sevian vs J Cao 0-1 30 2010 WYCC Open U10 B92 Sicilian, Najdorf, Opocensky Variation 13. N Djukic vs B Kalezic   1-0 43 2012 ch-MNE B92 Sicilian, Najdorf, Opocensky Variation 14. R Haria vs O Cajahuanca Ramirez   1-0 38 2012 World Junior Championship B92 Sicilian, Najdorf, Opocensky Variation

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1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6

page 1 of 6; games 1-25 of 141  Game   Result Moves Year Event/Locale Opening 1. Bronstein vs Opocensky ½-½ 31 1946 Prague (Czech Republic) B92 Sicilian, Najdorf, Opocensky Variation 2. Cortlever vs C Kottnauer 1-0 47 1947 Team match NED-CZE B92 Sicilian, Najdorf, Opocensky Variation 3. K Galia vs C Kottnauer 0-1 35 1947 Schlechter mem B92 Sicilian, Najdorf, Opocensky Variation 4. Tolush vs Bronstein 0-1 107 1947 Parnu it B92 Sicilian, Najdorf, Opocensky Variation 5. Kovacs vs C Kottnauer   0-1 28 1947 Schlechter mem B92 Sicilian, Najdorf, Opocensky Variation 6. A Rico Gonzalez vs Najdorf 0-1 35 1948 ARG B92 Sicilian, Najdorf, Opocensky Variation 7. L Stumpers vs H Kramer   0-1 40 1948 NED-ch14 B92 Sicilian, Najdorf, Opocensky Variation 8. G Gresser vs R Hermanowa   1-0 34 1950 Moscow, WCH Woman RUS B92 Sicilian, Najdorf, Opocensky Variation 9. H Malmgren vs E Adam   ½-½ 26 1950 1st World Correspondence Chess Championship B92 Sicilian, Najdorf, Opocensky Variation 10. H Kramer vs O'Kelly   ½-½ 48 1950 Amsterdam B92 Sicilian, Najdorf, Opocensky Variation 11. Boleslavsky vs Stahlberg   ½-½ 16 1950 ct, Budapest B92 Sicilian, Najdorf, Opocensky Variation 12. H Busek vs Julio Bolbochan   0-1 41 1950 Dubrovnik olm B92 Sicilian, Najdorf, Opocensky Variation 13. C Poulsen vs F Mastichiadis   1-0 50 1950 Dubrovnik olm B92 Sicilian, Najdorf, Opocensky Variation 14. Smyslov vs Najdorf 1-0 40 1950 Budapest B92 Sicilian, Najdorf, Opocensky Variation 15. Unzicker vs Tartakower   1-0 40 1950 Dubrovnik olm B92 Sicilian, Najdorf, Opocensky Variation 16. R Linskens vs Letelier   0-1 40 1951 San Rafael B92 Sicilian, Najdorf, Opocensky Variation 17. A Medina Garcia vs R Toran Albero   ½-½ 25 1951 Madrid B92 Sicilian, Najdorf, Opocensky Variation 18. Kashdan vs A Pomar-Salamanca   0-1 60 1952 Hollywood B92 Sicilian, Najdorf, Opocensky Variation 19. L Tavares Da Silva vs F De Carvalho   ½-½ 25 1952 BRA-ch B92 Sicilian, Najdorf, Opocensky Variation 20. A Vestol vs Gligoric   0-1 44 1952 Helsinki ol (Men) B92 Sicilian, Najdorf, Opocensky Variation 21. L Marini vs E Eliskases   ½-½ 58 1953 Buenos Aires ch-ARG B92 Sicilian, Najdorf, Opocensky Variation 22. Geller vs Najdorf 1-0 57 1953 Zurich Candidates B92 Sicilian, Najdorf, Opocensky Variation 23. J Nikolac vs Gligoric   ½-½ 49 1953 YUG-ch B92 Sicilian, Najdorf, Opocensky Variation 24. Unzicker vs Blau   0-1 60 1956 Moscow ol (Men) B92 Sicilian, Najdorf, Opocensky Variation 25. J Mangini vs L Tavares Da Silva   ½-½ 65 1957 BRA-ch24 B92 Sicilian, Najdorf, Opocensky Variation  page 1 of 6; games 1-25 of 141

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1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3

page 1 of 90; games 1-25 of 2,239  Game   Result Moves Year Event/Locale Opening 1. Pilnik vs Denker ½-½ 50 1948 New York B92 Sicilian, Najdorf, Opocensky Variation 2. Bisguier vs Pilnik   ½-½ 40 1948 New York B92 Sicilian, Najdorf, Opocensky Variation 3. V Liublinsky vs Kholmov   0-1 64 1949 USSR Championship B92 Sicilian, Najdorf, Opocensky Variation 4. Randviir vs Ufimtsev   1-0 73 1949 Ch URS (1/2 final) B92 Sicilian, Najdorf, Opocensky Variation 5. A Matanovic vs Ivkov   ½-½ 41 1950 Bled B92 Sicilian, Najdorf, Opocensky Variation 6. A Tarnowski vs Geller 0-1 72 1950 Schiavno Zdroj B92 Sicilian, Najdorf, Opocensky Variation 7. E Paoli vs H Mueller   0-1 54 1950 Venice B92 Sicilian, Najdorf, Opocensky Variation 8. A Ludwig vs A Liepnieks   1-0 38 1951 US Open B92 Sicilian, Najdorf, Opocensky Variation 9. G Eastman vs R Martin   1-0 30 1951 US Open B92 Sicilian, Najdorf, Opocensky Variation 10. Novotelnov vs Petrosian 0-1 26 1951 USSR Championship B92 Sicilian, Najdorf, Opocensky Variation 11. Lipnitsky vs Aronin   ½-½ 57 1952 USSR Championship B92 Sicilian, Najdorf, Opocensky Variation 12. Botvinnik vs Petrosian   ½-½ 22 1952 Budapest B92 Sicilian, Najdorf, Opocensky Variation 13. Rossolimo vs Reshevsky   0-1 52 1952 La Habana B92 Sicilian, Najdorf, Opocensky Variation 14. I Nei vs G Ilivitsky   0-1 40 1952 URS ch sf B92 Sicilian, Najdorf, Opocensky Variation 15. Gligoric vs B Djurasevic ½-½ 57 1953 YUG-ch B92 Sicilian, Najdorf, Opocensky Variation 16. Janosevic vs Gligoric ½-½ 15 1953 YUG-ch B92 Sicilian, Najdorf, Opocensky Variation 17. Keres vs Szabo   ½-½ 57 1953 Zurich Candidates B92 Sicilian, Najdorf, Opocensky Variation 18. Smyslov vs Kotov ½-½ 44 1953 Zurich Candidates B92 Sicilian, Najdorf, Opocensky Variation 19. A Matanovic vs Gligoric   0-1 40 1953 YUG-ch B92 Sicilian, Najdorf, Opocensky Variation 20. Z Milev vs Szabo 0-1 35 1953 Bucharest B92 Sicilian, Najdorf, Opocensky Variation 21. D Fischheimer vs A Kaufman   0-1 36 1954 55th US Open B92 Sicilian, Najdorf, Opocensky Variation 22. H Mortensen vs Larsen   0-1 28 1954 Copenhagen AS 1904 jub B92 Sicilian, Najdorf, Opocensky Variation 23. P Kremer vs J A Fred   0-1 37 1954 Amsterdam ol (Men) B92 Sicilian, Najdorf, Opocensky Variation 24. F Bennett vs O Sarapu   0-1 32 1954 61st New Zealand Championship B92 Sicilian, Najdorf, Opocensky Variation 25. V Soloviev vs Boleslavsky   0-1 41 1954 22nd USSR Ch semi-final B92 Sicilian, Najdorf, Opocensky Variation  page 1 of 90; games 1-25 of 2,239

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