A56u — Benoni: Czech, 5.e4 Be7 6.Bd3

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Bd3 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte b5, case forte d5, Bd3 actif, paire de fous.
Faiblesses adverses : arriéré d6, Be7 enfermé, Bc8 enfermé, roi noir au centre.
Problèmes : roi au centre, Bc1 enfermé, 4 pièces non développées (G1, C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Nf3 — Développer Ng1
● Bg5 — Clouer Nf6

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte d4, case forte g4, paire de fous.
Faiblesses adverses : Bc1 enfermé, Bd3 mauvais fou, roi blanc au centre.
Problèmes : roi au centre, Be7 enfermé, Bc8 enfermé, arriéré d6, 4 pièces non développées (B8, C8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Nbd7 — Développer Nb8
● ...Bf5 — Développer Bc8

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A56u — Czech

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Bd3

Eval: [+1.25]

Les coups candidats

6…O-O — 55.9% (1050 parties)

Ambassadeurs : Ciocaltea, Victor (6x), Foglar, Stanislav (5x), Skembris, Spyridon (5x), Dlugy, Maxim (5x), Paoli, Enrico (4x), Sahovic, Dragutin (4x), Zahilas, Loukas N. (4x), Segal, Alexandru Sorin (4x)

6…Nbd7 — 36.5% (686 parties)

Ambassadeurs : Coudari, Camille (12x), Khazankin, Moisei (5x), Finegold, Benjamin (5x), Mayer, Steven F. (4x), Gheorghiu, Florin (4x), Miladinovic, Igor (4x), Gorse, Gerard (4x), Puroila, Sippo (4x)

6…a6 — 4.0% (76 parties)

Ambassadeurs : Ciocaltea, Victor (3x), Dominguez Aguilar, Guillermo (2x), Nicholas, Geoffrey James (1x), Andersson, Ulf (1x), Bisguier, Arthur B (1x), Panno, Oscar (1x), Jankovec, Ivan (1x), Ryc, Ivo (1x)

6…Na6 — 1.9% (35 parties)

Ambassadeurs : Ary Claudio (1x), Mendes, Silvio Luiz Teixeira (1x), Neis, Dieter (1x), Ungnad, Rainer (1x), Hernandez, Gustavo (1x), Cuellar Gacharna, Miguel (1x), Hasenberg, Wilfried (1x), Landolfi, Franco (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…O-O	6…Nbd7	6…a6	6…Na6
<1800	32	50%	38%	6%	3%
1800-2200	621	53%	39%	3%	3%
2200-2600	797	52%	42%	4%	1%
2600+	14	50%	43%	7%	—

Évolution par décennie (% des parties)

Décennie	N parties	6…O-O	6…Nbd7	6…a6	6…Na6
1930s	3	67%	—	—	—
1950s	24	92%	4%	4%	—
1960s	107	76%	12%	9%	2%
1970s	99	75%	22%	2%	1%
1980s	118	72%	23%	3%	1%
1990s	372	61%	33%	3%	2%
2000s	532	52%	40%	5%	2%
2010s	547	45%	47%	3%	2%
2020s	76	46%	42%	8%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…O-O	45%	46%	▲ +0.7%
6…Nbd7	47%	42%	▼ -5.2%
6…a6	3%	8%	▲ +5.2%
6…Na6	2%	3%	▲ +0.6%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 1 partie
Euwe, Max — 1 partie

Parties historiques

6…O-O — 55.9% (1050 parties)

1938 — Gotti, Marco vs Raizman, Maurice — 0-1 — Nice FRA
1939 — Podolny, Grigory Abramovich vs Panov, Vasily — 0-1 — Moscow RUS
1950 — Ghionzoli Soloviev, Leonardo vs Panov, Vasily — 1-0 — Moscow-ch Moscow RUS
1951 — Gadalinski, Jan vs Sebestyen, Bela — 0-1 — Sopot
1952 — Taimanov, Mark vs Kasparian, Genrikh — 1-0 — Moskou ch-URS

6…Nbd7 — 36.5% (686 parties)

1958 — Simagin, Vladimir vs Vatnikov, Josif E — 1-0 — Moscow RUS
1966 — Rauch, Joseph Lyon vs Coudari, Camille — 0-1 — Montreal CAN
1967 — Gersho, Jack vs Coudari, Camille — 1-0 — Montreal CAN
1967 — Frymer vs Coudari, Camille — 0-1 — Fitchburg
1967 — Kraidman, Yair vs Smiltiner, Shlomo — 1-0 — Israel

6…a6 — 4.0% (76 parties)

1955 — Bisguier, Arthur B vs Panno, Oscar — 0-1 — Buenos Aires ARG
1965 — Soos, Bela vs Partos, Charles — 1/2-1/2 — Bucharest ROU
1966 — Colon Romero, Miguel vs Ornithopoulos, Nikolaos — 0-1 — La Habana olm prel
1966 — Donner, Jan-Hein vs Gralka, Julian — 1-0 — Groningen NED
1966 — Colon Cortegoso, Marta vs Ciocaltea, Victor — 0-1 — Havana CUB

6…Na6 — 1.9% (35 parties)

1960 — Ary Claudio vs Mendes, Silvio Luiz Teixeira — 1-0 — ?
1968 — Neis, Dieter vs Ungnad, Rainer — 0-1 — Saarbruecken
1973 — Hernandez, Gustavo vs Cuellar Gacharna, Miguel — 0-1 — Caracas Caracas VEN
1989 — Hasenberg, Wilfried vs Landolfi, Franco — 1/2-1/2 — ?
1992 — Walzl, Martin vs Csatari, Mariann — 1/2-1/2 — Balatonbereny open

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d6
Chaînes	● c4→d5, e4→d5	● d6→c5, d6→e5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● b5 (2v0), ● d5 (3v1)	● d4 (2v0), ● g4 (2v1)
Cases faibles	—	—
Centre	● d5 (3v1), ● e4 (2v1)	● d4 (2v0), ● e5 (1v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bd3	● Bd3 Actif (mob. 4)
Be7		● Be7 Enfermé (mob. 1)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	4 (g1, c1, a1, h1)	4 (b8, c8, a8, h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Au centre !
Droits de roque	O-O / O-O-O	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● f2-f3	—

Partie
1922 BCF 15. Major Open – Round 1 – Seitz, Jakob Adolf – 0-1 – Blake, Joseph – G1 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 d6 5. e4 Be7 6. Bd3 e5 7. Nge2 O-O 8. O-O Nbd7 9. Ng3 Re8 10. Nf5 Nf8
1938 FRA Ch – Round 11 – Gotti, Marco – 0-1 – Raizman, Maurice – G28 1. d4 c5 2. d5 e5 3. c4 d6 4. e4 Nf6 5. Nc3 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O Nd7 9. Ng3 g6 10. Bh6 Ng7
1949 Vienna – Round 12 – Rabar, Braslav – 1-0 – Galia, K. – G19 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 d6 5. e4 Be7 6. Bd3 e5 7. Nge2 Nh5 8. Ng3 Nf4 9. Bxf4 exf4 10. Nh5 g5
1951 Sopot – Round 10 – Gadalinski, Jan – 0-1 – Sebestyen, Bela – G56 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Bg5 Nxd5 8. Bxe7 Nxe7 9. Nge2 Nbc6 10. Ng3 f5
1952 Moskou ch-URS – Round 1 – Taimanov, Mark E – 1-0 – Kasparian, Genrikh – G39 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. Be3 Bg5 9. Qd2 Bxe3 10. Qxe3 Qh4
1953 POL-ch11 – Round 4 – Doda, Zbigniew – 1/2-1/2 – Grynfeld, Izaak – G23 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Na6 8. O-O Nc7 9. Ng3 a6 10. f4 Rb8
1955 Buenos Aires CA – Round 5 – Bisguier, Arthur B – 0-1 – Panno, Oscar – G35 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 a6 7. Nge2 Nbd7 8. Ng3 g6 9. O-O h5 10. Nge2 h4
1955 Novi Sad – Round 7 – Karaklajic, Nikola – 1/2-1/2 – Bertok, Mario Jr. – G60 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 c5 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. Bxg5 Qxg5 10. Qc1 Qe7
1956 URS Ch sf – Round ? – Bannik, Anatolij – 1-0 – Makarov, Andrei – G31 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. Be3 Bg5 9. Qd2 Bxe3 10. Qxe3 Na6
1957 HUN Ch – Round ? – Kluger, Gyula – 1-0 – Sebestyen, Balazs – G6 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. a3 Bxc1 10. Qxc1 Qf6
1957 Toronto wch-jr – Round 9 – Jobin, F. – 0-1 – Gerusel, Mathias – G23 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. Be3 Bg5 9. Qd2 Bxe3 10. Qxe3 Na6
1958 Munich olm prel – Round 1 – Kramer, Hanspeter – 1/2-1/2 – Bronstein, David I – G3 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. Be3 Bg5 9. Qd2 Bxe3 10. Qxe3 Nd7
1963 Budapest ch-HUN – Round 1 – Bilek, Istvan – 1/2-1/2 – Forintos, Gyozo V – G60 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O Bg5 9. Bc2 a6 10. a3 Nd7
1963 CSR Ch sf – Round 3.1 – Skokan, Zdenek – 0-1 – Kupka, Slavoj – G11 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. f4 exf4 10. Nxf4 Nxf4
1963 Sochi – Round 11 – Bobotsov, Milko G – 1/2-1/2 – Bilek, Istvan – G61 1. d4 c5 2. d5 e5 3. e4 d6 4. c4 Be7 5. Nc3 Nf6 6. Bd3 O-O 7. Nge2 Ne8 8. f3 Nd7 9. g4 Bh4+ 10. Ng3 Kh8
1963 WchT U26 10th – Round 8.1 – Battaggia, Piergiorgio – 0-1 – Hort, Vlastimil – G46 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. Ng3 Bxc1 10. Rxc1 Nf4
1964 CSR Ch – Round 3 – Lendl, Jiri – 1/2-1/2 – Kupka, Slavoj – G22 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. Be3 Bg5 9. Qd2 Bxe3 10. Qxe3 a6
1964 Hastings6465 – Round 8 – Pfleger, Helmut, Dr. – 0-1 – Gheorghiu, Florin – G34 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. Ng3 Nf4 9. Bxf4 exf4 10. Nh5 Bg5
1964 Tel Aviv olm prel – Round 2 – Hort, Vlastimil – 0-1 – Ciocaltea, Victor – G46 1. d4 c5 2. d5 e5 3. e4 d6 4. Bd3 Nf6 5. c4 Be7 6. Nc3 O-O 7. Nf3 a6 8. O-O Ne8 9. a3 g6 10. b4 b6
1965 Kiel Open – Round 2 – Delander, Adolf – 1-0 – Theis, Wolfgang – G10 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 e5 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. Ng3 g6 9. O-O Bg5 10. Nce2 Nd7
1965 Tallinn ch-URS – Round 11 – Polugaevsky, Lev – 0-1 – Stein, Leon Rico – G134 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nf3 Ne8 8. h3 Nd7 9. a3 g6 10. Bh6 Ng7
1966 Asztalos Memorial 9th – Round 9 – Bukic, Enver – 1/2-1/2 – Ciocaltea, Victor – G46 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. h3 Ne8 8. Nf3 a6 9. a3 g6 10. Bh6 Ng7
1966 Budapest Ch – Round 7 – Toth, Bela – 1-0 – Kurtesch Laszlo – G10 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Na6 8. O-O Nc7 9. Ng3 g6 10. Bh6 Re8
1966 La Habana olm fin-B – Round 5 – Porath, Yosef – 1-0 – Doda, Zbigniew – G73 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. a3 a6 10. b4 b6
1966 La Habana olm prel – Round 4 – Colon Cortegoso, Marta – 0-1 – Ciocaltea, Victor – G129 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 a6 7. Nge2 Nbd7 8. f3 Nh5 9. Be3 Bg5 10. Qd2 Bxe3
1966 La Habana olm prel – Round 4 – Liem Hong Gie – 1-0 – Araiza Munoz, Jose Joaquin – G128 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Nd7
1966 Palma de Mallorca – Round 11 – Visier Segovia, Fernando – 1/2-1/2 – Matanovic, Aleksandar – G65 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nbd7 8. h3 Ne8 9. Be3 Bg5 10. Qd2 Bxe3
1967 BRA Ch – Round 8 – Mecking, Henrique – 1-0 – Rocha, Antonio – G25 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Qf3 Na6 8. Nge2 Bg4 9. Qe3 Bxe2 10. Qxe2 Ne8
1967 Harrachov – Round 1 – Hamann, Svend – 0-1 – Weiman Hort, Valentin – G17 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O Bg5 9. a3 Nd7 10. g3 Bxc1
1967 HUN Ch Budapest HUN – Round 3 – Dely, Peter – 0-1 – Toth, Bela – G9 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. h3 Ne8 8. Nf3 g6 9. Bh6 Ng7 10. g4 Na6
1967 ISR Ch – Round 15 – Kraidman, Yair – 1-0 – Smiltiner, Shlomo – G66 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 Nbd7 7. Nge2 O-O 8. Be3 a6 9. f3 Rb8 10. O-O Re8
1967 ISR Ch – Round 2 – Aloni, Itzchak – 1/2-1/2 – Smiltiner, Shlomo – G9 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nbd7 8. Ng3 Ne8 9. O-O a6 10. a3 Bg5
1967 Jerusalem wch-jr – Round 4 – Timman, Jan H – 1-0 – Balshan, Amikam – G7 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O Nd7 9. a3 g6 10. b4 Ng7
1967 Maribor – Round 15 – Reshevsky, Samuel – 1-0 – Crepinsek, Ljubomir – G82 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. h3 Na6 8. a3 Ne8 9. Nge2 g6 10. O-O Ng7
1967 Olssons Memorial 6768 – Round 8 – Ek, Hans – 1/2-1/2 – Westerinen, Heikki M.J. – G22 1. d4 c5 2. d5 e5 3. c4 Nf6 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. Be3 Nd7 9. Qd2 a6 10. a3 Rb8
1967 Savona ch ITA – Round 4 – Romani, Elio – 0-1 – Paoli, Enrico – G9 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 a6 8. O-O Nh5 9. f4 exf4 10. Nxf4 Nf6
1967 Sousse Interzonal – Round 1 – Mecking, Henrique – 0-1 – Matanovic, Aleksandar – G2 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nf3 Ne8 8. h3 Nd7 9. g4 Nc7 10. a3 a6
1967 Sweden (ch) – Round 15 – Jansson, Borje – 1/2-1/2 – Brostrom, Goran – G76 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. h3 Ne8 8. Nf3 Nd7 9. a3 g6 10. Bh6 Ng7
1968 Cardenas/Matanzas/Santa Clara – Round 2 – Alvarez del Monte, Jose – 0-1 – Jimenez Zerquera, Eleazar – G12 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 Nbd7 7. Be3 a6 8. a4 O-O 9. f3 Nh5 10. Nh3 Nb8
1968 Corr – Round 1 – Lusin, Horacio Daniel – 0-1 – Morgado, Juan Sebastian – G3 1. d4 c5 2. d5 e5 3. e4 d6 4. c4 Nf6 5. Nc3 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O Bg5 9. f4 exf4 10. Bxf4 Bxf4
1968 CSR Ch – Round 2 – Dolezal, Jiri – 0-1 – Jansa, Vlastimil – G11 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nf3 Ne8 8. Qe2 a6 9. h3 Nd7 10. g4 g6
1968 Lugano ol (Men) fin-B – Round 1 – Mecking, Henrique – 1-0 – Jansson, Borje – G4 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nf3 Nbd7 8. a3 Ne8 9. g4 a6 10. b4 Qc7
1968 Netanya-A – Round 11 – Yanofsky, Daniel Abraham – 1/2-1/2 – Ciocaltea, Victor – G63 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. Be3 Bg5 9. Qd2 Bxe3 10. Qxe3 Nd7
1968 Reggio Emilia – Round 5 – Zinser, Sylvain – 1/2-1/2 – Paoli, Enrico – G8 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Nd7
1968 WchT U26 15. qual-E – Round 4.2 – Skalkotas, Nikolaos – 1/2-1/2 – Plachetka, Jan – G8 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. a3 g6 10. b4 b6
1968 Weimar ch DDR – Round 17 – Wehnert, Lutz – 1/2-1/2 – Moehring, Guenther – G28 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Nh5 8. O-O Bg5 9. f4 exf4 10. Nxf4 Nxf4
1969 Brno KOLT 2nd – Round ? – Zavodny, Zdenek – 0-1 – Karlik, Vladimir – G6 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nge2 Ne8 8. Qc2 Nd7 9. O-O Bg5 10. f4 exf4
1969 Buenos Aires – Round 2 – Foguelman, Alberto – 0-1 – Bronstein, Luis Marcos – G18 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. h3 a6 8. Nge2 Ne8 9. Ng3 Bg5 10. h4 Bxc1
1969 Capablanca Memorial – Round 5 – Jimenez Zerquera, Eleazar – 1-0 – Panno, Oscar – G35 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 Nbd7 7. h3 a6 8. Nf3 Rb8 9. a4 b6 10. Qe2 Nf8
1969 Churchill Memorial Open 17th – Round 5 – Nicholas, Geoffrey James – 0-1 – Andersson, Ulf 1949 – G6 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 a6 7. Nge2 Nbd7 8. O-O O-O 9. Ng3 Ne8 10. Nf5 Bg5
1969 Palma de Mallorca – Round 17 – Bobotsov, Milko G – 1/2-1/2 – Najdorf, Miguel – G145 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Qe2 a6 8. h3 Nbd7 9. g4 Ne8 10. Nf3 Nc7
1970 IBM – Round 9 – Hamann, Slawomir – 0-1 – Piket, Jeroen – G50 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nf3 Ne8 8. h3 Nd7 9. g4 Kh8 10. Qc2 Ndf6
Tallinn 1973 – Round 1 – Spassky, Boris V. – 1/2-1/2 – Popov, Luben – G16 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 O-O 7. Nf3 Ne8 8. h3 Nd7 9. Qe2 a6 10. a4 b6

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