Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● e2→d3, f2→g3, h2→g3, d3→c4	● d6→c5, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● f4 (2v0), ● b5 (2v0), ● d5 (2v1), ● g5 (2v0)	● b4 (2v0), ● d4 (2v1), ● g4 (2v0), ● e5 (2v1), ● f5 (2v0)
Cases faibles	—	—
Centre	● d5 (2v1), ● e4 (2v1)	● d4 (2v1), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bd2	● Bd2 Actif (mob. 6)
Bg2	● Bg2 Ok (mob. 2)
Bg7		● Bg7 Ok (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	1 (● a1)	2 (● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d3-d4	● …d6-d5

A38p — English: Symmetrical, Main Line, 7.d3 d6 8.Bd2

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Bd2 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Jeu au centre (rupture d3-d4).

Atouts. Les Blancs s'appuient sur un contrôle dominant de e4, f4, b5, d5 et g5 et un fou actif en d2.

Plans. a3 (Préparer expansion aile dame — 29 % des parties) ; Rb1 (28 % des parties) ; Qc1 (27 % des parties) ; h3 (Empêcher ...Bg4 — 6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plan principal. Exploiter l'avant-poste d4.

Atouts. Les Noirs s'appuient sur un contrôle dominant de b4, d4, g4, e5 et f5 et un avant-poste en d4.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bd7 (Fou actif (mobilité 6), Développer c8 — 33 % des parties) ; ...Rb8 (19 % des parties) ; ...a6 (Préparer expansion aile dame — 15 % des parties) ; ...Bg4 (Fou actif (mobilité 7), Développer c8 — 10 % des parties) ; ...h6 (7 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1920 Gothenburg-B – Round 1 – Carls, Carl – 1-0 – Bergdahl Larsson, Rasmus – G1 1. c4 c5 2. Nc3 Nc6 3. g3 d6 4. Bg2 g6 5. d3 Bg7 6. Nf3 Nf6 7. O-O O-O 8. Bd2 Bd7 9. Nd5 e6 10. Nxf6+ Bxf6
1924 Buenos Aires – Round 18 – Reti, Richard – 0-1 – Guerra Boneo – G32 1. Nf3 Nf6 2. c4 c5 3. g3 g6 4. Bg2 Bg7 5. Nc3 Nc6 6. O-O O-O 7. d3 d6 8. Bd2 h6 9. Rb1 Qd7 10. a3 b6
1925 Bratislava-A – Round 7 – Rasovsky, Josef – 1/2-1/2 – Thelen, Bedrich – G11 1. Nf3 Nf6 2. c4 c5 3. g3 g6 4. Bg2 Bg7 5. O-O Nc6 6. Nc3 O-O 7. d3 d6 8. Bd2 h6 9. a3 Bd7 10. Qc2 Qc8
1943 Zlin – Round 12 – Prucha, Karel – 1/2-1/2 – Petrik, Timofei – G70 1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 Nf6 6. O-O d6 7. d3 O-O 8. Bd2 a6 9. Qc1 Bg4 10. h3 Bd7
1953 NRW Ch – Round 1 – Werner, Stephan – 1/2-1/2 – Wieckowiak, Hans – G2 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 c5 5. Nc3 Nc6 6. O-O O-O 7. d3 d6 8. Bd2 h6 9. Qc1 Kh7 10. Rb1 Be6
1955 Hungary Ch – Round 1 – Sandor, Balazs – 1/2-1/2 – Bilek, Istvan – G68 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c5 7. d3 Nc6 8. Bd2 Bd7 9. Qc1 Qc8 10. Bh6 Bh3
1955 Ljubljana – Round 9 – Grosek, Branko – 1/2-1/2 – Bertok, Mario Jr. – G79 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 Nf6 6. O-O O-O 7. d3 d6 8. Bd2 Rb8 9. Qc1 a6 10. Bh6 b5
1956 Mar del Plata ARG – Round 1 – San Martin Sanguinetti, Vicente – 1/2-1/2 – Behrensen, Jorge – G1 1. c4 Nf6 2. g3 c5 3. Bg2 g6 4. Nc3 Nc6 5. Nf3 Bg7 6. O-O O-O 7. d3 d6 8. Bd2 Rb8 9. a3 a6 10. Rb1 b5
1958 HUN Ch 13th – Round 2 – Portisch, Lajos – 1/2-1/2 – Bilek, Istvan – G11 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. d3 d6 6. Nf3 c5 7. O-O Nc6 8. Bd2 Bd7 9. Rb1 Ne8 10. Ne1 Nc7
1958 HUN Ch Budapest HUN – Round 17 – Bilek, Istvan – 1/2-1/2 – Honfi, Karoly – G90 1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O g6 5. d3 Bg7 6. c4 O-O 7. Nc3 d6 8. Bd2 Bd7 9. a3 Qc8 10. Rb1 Bh3
1961 Bled – Round 1 – Udovcic, Mijo – 0-1 – Parma, Bruno – G1 1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nf3 Bg7 5. O-O d6 6. Nc3 Nf6 7. d3 O-O 8. Bd2 a6 9. a3 Rb8 10. Ne1 Bd7
1962 Leningrad – Round 1 – Flesch, Janos – 1-0 – Gandarias Geller, Marcos – G32 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. Nc3 Nc6 7. d3 d6 8. Bd2 a6 9. Ne1 Rb8 10. Nc2 Bd7
1962 Mar del Plata – Round 5 – Guimard, Carlos E – 1/2-1/2 – Panno, Oscar – G51 1. Nf3 c5 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. d3 d6 8. Bd2 h6 9. h3 Rb8 10. Nd5 Ne8
1962 Poznan ch POL – Round 14 – Doda, Zbigniew – 1/2-1/2 – Schmidt, Wlodzimierz – G89 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O c5 7. d3 Nc6 8. Bd2 Ne8 9. Ne1 Nc7 10. Nc2 Bd7
1962 WT/M/945 – Round ? – Ddamulira Luke – 0-1 – Tiemann, Christoph – G14 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d3 c5 7. Nc3 Nc6 8. Bd2 Rb8 9. Qc1 Re8 10. Bh6 Bh8
1963 LAT Ch – Round ? – Zilber, Israel – 1-0 – Zdanovs, Igors – G73 1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. d3 d6 8. Bd2 Bg4 9. h3 Bd7 10. Qc1 Nd4
1964 Hoogovens – Round 1 – Flesch, Jean-benoit – 1/2-1/2 – Sandor, Balazs – G49 1. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O O-O 5. c4 c5 6. Nc3 Nc6 7. d3 d6 8. Bd2 Bd7 9. Ne1 Ne8 10. a3 a5
1964 Zagreb – Round 1 – Udovcic, Mijo – 1/2-1/2 – Parma, Bruno – G6 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 Nf6 6. Nc3 O-O 7. d3 d6 8. Bd2 Bd7 9. a3 Ne8 10. Rb1 a5
1966 Buenos Aires ch-ARG – Round 1 – Behrensen, Jorge – 1-0 – Chemes, Luis – G11 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. Nc3 Nc6 7. d3 d6 8. Bd2 e5 9. Rb1 a5 10. Ne1 Re8
1966 Harrachov U26 – Round 4 – Kubicek, Antonin – 1-0 – Augustin, Josef – G16 1. Nf3 Nf6 2. g3 c5 3. Bg2 g6 4. O-O Bg7 5. c4 O-O 6. Nc3 Nc6 7. d3 d6 8. Bd2 e5 9. e3 h6 10. Nd5 Nxd5
1966 Havana – Round 1 – Roux Cabral, Luis – 0-1 – Yepez, Olavo – G2 1. d3 g6 2. g3 Bg7 3. Bg2 c5 4. Nf3 Nc6 5. c4 d6 6. Nc3 Nf6 7. Bd2 O-O 8. O-O a6 9. h3 Rb8 10. a4 h6
1969 Castlebar Open – Round 6 – Brinck-Claussen, Bjorn – 1-0 – Grabow, Pouelsten Holm – G21 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d3 d6 8. Bd2 Bd7 9. a3 Qc8 10. Rb1 Bh3
1969 Schwerin – Round 1 – Schoeneberg, Manfred – 1/2-1/2 – Pietzsch, Wolfgang – G3 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 c5 6. O-O Nc6 7. d3 d6 8. Bd2 h6 9. a3 Be6 10. Rb1 Qd7

A38p — Symmetrical, Main Line (1920)

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Bd2

Les coups candidats

8…Bd7 — 32.7% (264 parties)

Ambassadeurs : Seres, Lajos (6x), Bak, Istvan (5x), Vautrin, Stefan (3x), Mariotti, Sergio (2x), Ambroz, Jan (2x), Antic, Dejan (2x), Portisch, Lajos (1x), Albano, Marco (1x)

8…Rb8 — 19.2% (155 parties)

Ambassadeurs : Fasciglione, Bernardino (2x), Sanguinetti, Edoardo (1x), Behrensen, Jorge (1x), Arnstam, Knut (1x), Asik, Hakan (1x), Lombardy (1x), Evans, Larry (1x), Stoliar, Efim Samoilovich (1x)

8…a6 — 15.2% (123 parties)

Ambassadeurs : Flesch, Janos (2x), Yepez, Olavo (2x), Geller, Adam (1x), Geller, Alexander (1x), Garcia, Alfredo NA (1x), Muehlberg, Siegfried (1x), Ujtelky, Maximilián Samuel Rudolf (1x), Roux Cabral, Luis (1x)

8…Bg4 — 9.7% (78 parties)

Ambassadeurs : Zilber, Israel (1x), Zdanovs, Igors (1x), Cafferty, Bernard (1x), Alles, C (1x), Rubio Purrinos, Hugo (1x), Hernandez Onna, Roman (1x), Kosny, Marek (1x), Koziarski, Andrzej (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…Bd7	8…Rb8	8…a6	8…Bg4
<1800	111	31%	17%	22%	5%
1800-2200	366	30%	22%	13%	13%
2200-2600	130	44%	17%	13%	4%
2600+	2	—	—	50%	—

Évolution par décennie (% des parties)

Décennie	N parties	8…Bd7	8…Rb8	8…a6	8…Bg4
1950s	15	27%	27%	7%	—
1960s	28	29%	14%	18%	7%
1970s	22	41%	23%	5%	5%
1980s	30	37%	13%	17%	3%
1990s	156	35%	18%	12%	13%
2000s	253	31%	22%	14%	13%
2010s	257	33%	18%	19%	7%
2020s	47	30%	19%	17%	2%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…Bd7	33%	30%	▼ -3.3%
8…Rb8	18%	19%	▲ +1.3%
8…a6	19%	17%	▼ -1.7%
8…Bg4	7%	2%	▼ -5.3%

Parties historiques

8…Bd7 — 32.7% (264 parties)

1955 — Sandor, Bela vs Bak, Istvan — 1/2-1/2 — Hungary ch
1957 — Pilnik, Herman vs Palsson, Jon Gunnar — 1-0 — ?
1958 — Portisch, Lajos vs Bak, Istvan — 1/2-1/2 — Budapest HUN
1958 — Bak, Istvan vs Honfi, Karoly — 1/2-1/2 — HUN-ch Budapest HUN
1962 — Filipov, Filip vs Prakhov, Valentin Asenov — 0-1 — Sofia BUL

8…Rb8 — 19.2% (155 parties)

1955 — Grosek, Branko vs Bertok, Mario Jr. — 1/2-1/2 — Ljubljana
1956 — Sanguinetti, Edoardo vs Behrensen, Jorge — 1/2-1/2 — Mar del Plata ARG
1956 — Lombardy vs Evans, Larry — 1/2-1/2 — Metropolitan League
1956 — Stoliar, Efim Samoilovich vs Kotkov, Yuri M — 0-1 — Kislovodsk
1962 — Ariba Desmond Luke vs Tiemann, Christoph — 0-1 — WT/M/945

8…a6 — 15.2% (123 parties)

1957 — Muehlberg, Siegfried vs Ujtelky, Maximilián Samuel Rudolf — 1-0 — Dresden GER
1961 — Udovcic, Mijo vs Parma, Bruno — 0-1 — Bled SLO
1962 — Flesch, Janos vs Geller, Adam — 1-0 — Leningrad RUS
1962 — Flesch, Janos vs Geller, Alexander — 1-0 — Leningrad RUS
1962 — Yepez, Olavo vs Garcia, Alfredo NA — 1-0 — Pichincha

8…Bg4 — 9.7% (78 parties)

1961 — Cafferty, Bernard vs Alles, C — 1-0 — Hastings ENG
1963 — Zilber, Israel vs Zdanovs, Igors — 1-0 — Riga LAT
1978 — Kosny, Marek vs Koziarski, Andrzej — 0-1 — Warsaw POL
1988 — Rubio Purrinos, Hugo vs Hernandez Onna, Roman — 0-1 — Corte Ingles
1992 — Schmitz, Christopher vs Noll, Sonja — 0-1 — GER

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