Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● e2→d3, f2→g3, h2→g3, d3→c4	● d7→e6, f7→e6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v0), ● f4 (2v0), ● b5 (2v0), ● g5 (2v0)	● b4 (2v0), ● d4 (3v1), ● e5 (2v1), ● f5 (3v0)
Cases faibles	—	—
Centre	● e4 (2v0)	● d4 (3v1), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bd2	● Bd2 Actif (mob. 6)
Bg2	● Bg2 Ok (mob. 2)
Bg7		● Bg7 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
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	● …d7-d5

A37p — English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd2

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd2 * ● Trait aux Noirs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter l'avant-poste e4.

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

Côté adverse. Un mauvais fou en c8.

Plans. Qc1 (30 % des parties) ; a3 (Préparer expansion aile dame — 30 % des parties) ; Rb1 (19 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Jeu au centre (...d5 dans 48 % des parties).

Atouts. Les Noirs s'appuient sur un contrôle dominant de b4, d4, e5 et f5, un avant-poste en d4 et un fou actif en g7.

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

Plans. ...d5 (Occuper le centre — 48 % des parties) ; ...b6 (Préparer le fianchetto — 30 % des parties) ; ...h6 (8 % des parties) ; ...a6 (Préparer expansion aile dame — 5 % des parties) ; ...d6 (Libérer Bc8 — 5 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1957 URS Ch, semi final – Round 11 – Kholmov, Ratmir D – 1/2-1/2 – Korchnoi, Viktor – G110 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 h6 9. e4 d6 10. Be3 Nd4
1957 Wageningen zt – Round 10 – Uhlmann, Wolfgang – 1/2-1/2 – Trifunovic, Petar – G27 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. a3 Bb7 10. Rb1 a5
1958 WchT U26 fin-A 05th – Round 7 – Kozma, Julius – 1/2-1/2 – Forintos, Gyozo V – G69 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 h6 9. a3 d5 10. Rb1 dxc4
1959 HUN Ch Budapest HUN – Round 13 – Orendy, Emil – 1-0 – Forintos, Gyozo V – G53 1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. c4 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 h6 9. a3 b6 10. Qc1 Kh7
1961 CAN Ch – Round 4 – Danilov, George – 0-1 – Vranesic, Zvonko – G11 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O e6 6. d3 Nge7 7. Nc3 O-O 8. Bd2 a6 9. Rb1 Rb8 10. a4 b6
1962 Mar del Plata – Round 1 – Eliskases, Erich – 1-0 – Bielicki, Carlos – G19 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 h6 9. Rb1 e5 10. a3 a5
1964 Tel Aviv olm prel – Round 1 – Doda, Zbigniew – 1/2-1/2 – Reshevsky, Samuel – G37 1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 e6 6. d3 Nge7 7. O-O O-O 8. Bd2 h6 9. a3 d5 10. Rb1 dxc4
1965 Hamburg etc – Round 1 – Flesch, Jean-benoit – 1/2-1/2 – ? – G51 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. cxd5 exd5 10. Qc1 Re8
1966 CSR Ch Int – Round 9 – Hort, Vlastimil – 1/2-1/2 – Abramovich Furman, Semyon – G14 1. c4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 a6 9. Qc1 Nf5 10. Bg5 f6
1966 Harrachov – Round 1 – Hort, Vlastimil – 1/2-1/2 – Furman, Slavomir – G1 1. c4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 a6 9. Qc1 Nf5 10. Bg5 f6
1966 Hungary – Round 1 – Pogats, Jozsef Jr. – 1/2-1/2 – Dely, Peter – G34 1. Nf3 c5 2. g3 Nc6 3. c4 g6 4. Bg2 Bg7 5. Nc3 e6 6. d3 Nge7 7. O-O O-O 8. Bd2 b6 9. a3 d5 10. Rb1 1/2-1/2
1966 Kecskemet Laszlo Toth Memorial – Round 1 – Simagin, Vladimir – 1/2-1/2 – Bilek, Istvan – G5 1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. c4 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. Rb1 b6 10. a3 Bb7
1966 La Habana olm prel – Round 3 – Garcia Rodriguez, Raimundo – 1/2-1/2 – Keene, Raymond D – G45 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. a3 Bb7 10. Rb1 d6
1966 Zinnowitz GER – Round 13 – Liebert, Heinz – 1/2-1/2 – Moehring, Guenther – G24 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. a3 d5 10. Rb1 dxc4
1967 CSR Ch – Round 3 – Kubicek, Antonin – 0-1 – Smejkal, Jan – G15 1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. cxd5 Nxd5 10. Qc1 b6
1967 Harrachov – Round 1 – Smejkal, Jakub – 1/2-1/2 – Keene, Raymond D – G1 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. Rb1 Bb7 10. a3 a5
1967 Maribor – Round 2 – Reshevsky, Samuel – 1/2-1/2 – Ivkov, Borislav – G19 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 b6 9. Qc1 Bb7 10. Bh6 Bxh6
1967 Sousse Interzonal – Round 14 – Cuellar Alpire, Mariana – 0-1 – Bilek, Istvan – G125 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nf3 Nc6 5. Nc3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. a3 Bb7 10. Rb1 d5
1967 Zinnowitz – Round 1 – Bukic, Enver – 1/2-1/2 – Malich, Burkhard, Dr. – G18 1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. Qc1 b6 10. cxd5 exd5
1967 Zinnowitz – Round 1 – Golz, Werner – 1/2-1/2 – Neukirch, Detlef – G20 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. Qc1 b6 10. Rb1 Bb7
1968 Capablanca Memorial – Round 1 – Rodriguez Gonzales, Angie Kelly – 0-1 – Ostojic, Predrag – G71 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 e6 6. d3 Nge7 7. O-O O-O 8. Bd2 d5 9. Rb1 b6 10. a3 Bb7
1968 Capablanca Memorial – Round 1 – Suetin, Alexey S – 1/2-1/2 – Kholmov, Ratmir D – G1 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. a3 Bb7 10. Rb1 d5
1968 Lugano – Round 1 – Padevsky, Nikola – 1-0 – Smejkal, Jakub – G2 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. d3 Nge7 7. O-O O-O 8. Bd2 d5 9. Qc1 b6 10. Bh6 d4
1968 Lugano ol (Men) qual-B – Round 1 – Byrne, David – 1-0 – Shaw, Terrey I – G8 1. g3 g6 2. Bg2 Bg7 3. c4 c5 4. Nc3 Nc6 5. d3 e6 6. Nf3 Nge7 7. O-O O-O 8. Bd2 Rb8 9. Qc1 Re8 10. Ne4 d6
1968 Lugano ol (Men) qual-G – Round 5 – Padevsky, Nikola – 1-0 – Smejkal, Jan – G23 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. d3 Nge7 7. O-O O-O 8. Bd2 d5 9. Qc1 b6 10. Bh6 d4
1968 Lugano olm - Round 1 - Simon Cobo, Enrique - 0-1 - Keene, Raymond D - G464 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 a6 9. Rb1 Rb8 10. a4 h6
1968 Olympiad Final A – Round 13 – Larsen, Benjamin Holsko – 1/2-1/2 – Gheorghiu, Florin – G24 1. Nf3 g6 2. c4 c5 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. cxd5 Nxd5 10. Qc1 b6
1968 Palma de Mallorca – Round 13 – Byrne, Donald – 1/2-1/2 – Gheorghiu, Florin – G115 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. d3 e6 6. Nf3 Nge7 7. O-O O-O 8. Bd2 d5 9. cxd5 Nxd5 10. Rc1 b6
1968 Reykjavik – Round 1 – Addison, Wiliam G – 0-1 – Byrne, Ray – G76 1. Nf3 g6 2. g3 Bg7 3. Bg2 c5 4. O-O Nc6 5. c4 e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 h6 9. Rb1 b6 10. a3 Bb7
1968 Southend – Round 1 – Andy Zane Wright – 1/2-1/2 – Basman, Michael J – G21 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 h6 9. Rb1 d5 10. a3 Nf5
1969 Leningrad – Round 1 – Blechzin, Igor – 0-1 – Faibisovich, Vadim Z – G15 1. g3 g6 2. Bg2 Bg7 3. Nf3 c5 4. O-O Nc6 5. c4 e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 d5 9. b3 b6 10. Qc1 Re8
1970 Belgrade URS-World – Round 2.2 – Petrosian, Tigran V. – 0-1 – Fischer, Robert James Jamesames – G5 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. a3 b6 10. Rb1 Bb7
1972 Skopje ol (Men) fin-A – Round 5 – Pfleger, Helmut, Dr. – 1/2-1/2 – Bednarski, Jacek B – G384 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 d5 9. Qc1 b6 10. Rd1 Bb7
1973 Leningrad Interzonal – Round 12 – Larsen, Bent – 0-1 – Tal, Mihail – G18 1. c4 g6 2. Nc3 Bg7 3. Nf3 c5 4. g3 Nc6 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 d5 9. Qc1 b6 10. Bh6 Bb7
1975 Portoroz/Ljubljana – Round 8 – Osterman, Rudolf – 0-1 – Ribli, Zoltan – G108 1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. Qc1 d5 10. cxd5 exd5
Linares 1989 – Round 1 – Ljubojevic, Ljubomir – 1-0 – Gulko, Boris – G5 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nf3 Nc6 5. O-O e6 6. Nc3 Nge7 7. d3 O-O 8. Bd2 d5 9. a3 b6 10. Rb1 Bb7
Lone Pine Open 1978 – Round 7 – Larsen, Bent – 1/2-1/2 – Polugaevsky, Lev – G25 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e6 6. O-O Nge7 7. d3 O-O 8. Bd2 b6 9. Qc1 Bb7 10. Bg5 d5

A37p — Symmetrical (1957)

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd2

Les coups candidats

8…d5 — 55.2% (420 parties)

Ambassadeurs : Koehler, Josef (7x), Morihama, Nicolau (5x), Padevsky, Nikola (3x), Lomsadze, Davit (3x), Malich, Burkhard, Dr. (2x), Gheorghiu, Florin (2x), Smejkal, Jan (2x), Stigar, Petter (2x)

8…b6 — 27.5% (209 parties)

Ambassadeurs : Gheorghiu, Florin (4x), Keene, Raymond D (3x), Uhlmann, Wolfgang (3x), Sznapik, Aleksander (3x), Urpilainen, Erkki (3x), Bak, Istvan (2x), Moehring, Guenther (2x), Ayan Schneider (2x)

8…h6 — 6.2% (47 parties)

Ambassadeurs : Forintos, Gyozo V (2x), Arulaid, Alexander (1x), Aditya Pola (1x), Eliskases, Erich (1x), Bielicki, Carlos (1x), Orendy, Emil (1x), Kozma, Julius (1x), Smyslov, Vasily (1x)

8…d6 — 5.7% (43 parties)

Ambassadeurs : Ornstein, Axel (2x), Juric, Slaven (2x), Sharpe, Ian W (1x), Christiansen, Hjalmar (1x), Ljungdahl, John (1x), Schneider, Bernhard (1x), Razlag, Franz (1x), Franzen, Jozef (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…d5	8…b6	8…h6	8…d6
<1800	30	70%	17%	—	3%
1800-2200	265	58%	23%	5%	7%
2200-2600	340	52%	34%	6%	4%
2600+	7	43%	43%	—	14%

Évolution par décennie (% des parties)

Décennie	N parties	8…d5	8…b6	8…h6	8…d6
1950s	4	—	25%	75%	—
1960s	36	39%	22%	22%	3%
1970s	67	46%	39%	3%	7%
1980s	47	57%	28%	4%	4%
1990s	128	52%	30%	5%	5%
2000s	158	53%	26%	8%	8%
2010s	284	61%	25%	4%	5%
2020s	37	62%	30%	5%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…d5	61%	62%	▲ +0.9%
8…b6	25%	30%	▲ +5.1%
8…h6	4%	5%	▲ +1.2%
8…d6	5%	3%	▼ -2.6%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

8…d5 — 55.2% (420 parties)

1963 — Esposito, Alfredo vs Cruz, Raul C. — 0-1 — Buenos Aires ARG
1965 — Flesch, Jean-benoit vs ? — 1/2-1/2 — Hamburg etc
1966 — Simagin, Vladimir vs Bak, Istvan — 1/2-1/2 — Kecskemet HUN
1966 — Kolarov, Atanas S. vs Malich, Burkhard, Dr. — 1/2-1/2 — Havana olm
1967 — Bukic, Enver vs Malich, Burkhard, Dr. — 1/2-1/2 — Zinnowitz GER

8…b6 — 27.5% (209 parties)

1957 — Uhlmann, Wolfgang vs Trifunovic, Petar — 1/2-1/2 — Wageningen NED
1960 — Bak, Istvan vs Raisa, Unto — 1-0 — Budapest HUN
1966 — Garcia, Eder Raimundo vs Keene, Raymond D — 1/2-1/2 — La Habana olm prel
1966 — Pogats, Jozsef Jr. vs Dely, Peter — 1/2-1/2 — Budapest HUN
1966 — Liebert, Heinz vs Moehring, Guenther — 1/2-1/2 — Zinnowitz GER

8…h6 — 6.2% (47 parties)

1957 — Kholmov, Ratmir D vs Korchnoi, Viktor — 1/2-1/2 — Sverdlovsk
1958 — Kozma, Julius vs Forintos, Gyozo V — 1/2-1/2 — Varna BUL
1959 — Orendy, Emil vs Forintos, Gyozo V — 1-0 — HUN-ch Budapest HUN
1962 — Eliskases, Erich vs Bielicki, Carlos — 1-0 — Mar del Plata ARG
1964 — Doda, Zbigniew vs Rapaka Samuel Paul — 1/2-1/2 — Tel Aviv olm

8…d6 — 5.7% (43 parties)

1969 — Sharpe, Ian W vs Christiansen, Hjalmar — 1-0 — ?
1972 — Balshan, Amikam vs Markland, Peter R — 1/2-1/2 — Skopje MKD
1973 — Ljungdahl, John vs Ornstein, Axel — 0-1 — Sweden
1974 — Zwaig, Arne vs Ornstein, Axel — 0-1 — Norway
1975 — Taimanov, Mark vs Tseshkovsky, Vitaly — 1/2-1/2 — Olympiad URS

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