A37y — English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d3

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur les cases fortes e4, b5, d5 et g5, un avant-poste en d5 et la paire de fous.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Be3 (Développer Bc1) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur les cases fortes b4, d4 et f5, un avant-poste en d4 et la paire de fous.

Côté adverse. Les fous enfermés en c1 et g2.

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...Bg4 (Clouer Nf3) ; ...d5 (Rupture) ; ...e4 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v0), ● b5 (2v0), ● d5 (2v1), ● g5 (2v0)	● b4 (2v0), ● d4 (3v1), ● f5 (2v0)
Cases faibles	—	—
Centre	● d5 (2v1), ● e4 (2v0)	● d4 (3v1), ● e5 (2v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Enfermé (mob. 2)
Bg7		● Bg7 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	3 (c8, a8, h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d3-d4, ● e2-e3	● …d7-d6, ● …d7-d5, ● …e5-e4, ● …f7-f6, ● …f7-f5

Partie
1956 JUG-URS – Round 1 – Pirc, Vasja – 0-1 – Averbach, Y. – G21 1. Nf3 c5 2. g3 g6 3. c4 Bg7 4. Bg2 e5 5. Nc3 Ne7 6. O-O O-O 7. d3 Nbc6 8. a3 d6 9. Rb1 Rb8 10. b4 b6
1958 Tashkent ch URS sf – Round ? – Byvshev, Vasily – 0-1 – Kholmov, Ratmir D – G1 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. Bg5 h6 9. Be3 d6 10. a3 f5
1959 FRG Ch Nuerenberg GER – Round 8 – Jaeger, Walter – 0-1 – Lehmann, Heinz – G27 1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nc6 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. Nd5 d6 9. Bg5 h6 10. Bf6 Bxf6
1960 CSR Ch – Round 16 – Olexa, Vilem – 0-1 – Fichtl, Jiri – G133 1. c4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 e5 5. d3 Ne7 6. Nc3 O-O 7. O-O Nbc6 8. Bd2 h6 9. Qc1 Kh7 10. Rb1 d6
1960 URS Ch sf – Round 7 – Peterson, Andrejs – 1/2-1/2 – Osnos, Viatcheslav – G50 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. a3 d6 9. Rb1 f5 10. Bd2 a5
1961 Nykobing – Round 1 – Nielsen, Axel – 1/2-1/2 – Kolvig, Bent – G3 1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. g3 Nc6 5. Bg2 e5 6. d3 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 f5 10. f4 a6
1961 URS-ch29 sf Novgorod – Round 14 – Savon, Vladimir – 1/2-1/2 – Kholmov, Ratmir D – G39 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. Rb1 d6 9. a3 a5 10. Ne1 f5
1962 Argentina – Round 12 – Sanguineti, Raúl Carlos – 1-0 – Rubinetti, Jorge – G65 1. g3 c5 2. Bg2 g6 3. c4 Bg7 4. Nc3 Nc6 5. Nf3 e5 6. a3 Nge7 7. O-O O-O 8. d3 d6 9. Rb1 a5 10. Ne1 Be6
1962 Mar del Plata – Round 4 – Najdorf, Miguel – 1/2-1/2 – Pachman, Ludek – G45 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. d3 e5 6. c4 Nge7 7. Nc3 O-O 8. Rb1 d6 9. a3 b6 10. b4 Bb7
1962 Varna olm – Round 1 – Barcza, Gedeon – 1-0 – Hecht, Hans-Joachim – G89 1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. c4 Nc6 5. Nc3 e5 6. d3 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 Be6 10. Ne3 Rb8
1963 Beverwijk – Round 1 – Dunkelblum, Arthur – 1-0 – Ditt, Egon – G18 1. Nf3 c5 2. g3 Nc6 3. c4 g6 4. Bg2 Bg7 5. Nc3 e5 6. O-O Nge7 7. d3 O-O 8. Bd2 h6 9. Qc1 Kh7 10. Rb1 d6
1963 FRG Ch 07th – Round 13 – Besser, Hans – 1/2-1/2 – Hecht, Hans-Joachim – G26 1. Nf3 g6 2. g3 Bg7 3. Bg2 c5 4. c4 Nc6 5. O-O e5 6. Nc3 Nge7 7. d3 O-O 8. Rb1 d6 9. a3 Rb8 10. b4 h6
1964 Tel Aviv olm – Round 1 – Acosta Garcia, Rafael Isaac – 1/2-1/2 – Bobotsov, Milko G – G122 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O e5 6. Nc3 Nge7 7. d3 O-O 8. a3 Rb8 9. Rb1 a6 10. b4 cxb4
1964 Tel Aviv olm – Round 1 – Botvinnik, Mikhail – 1/2-1/2 – Bobotsov, Milko G – G1 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. d3 Nge7 7. O-O O-O 8. Ne1 Rb8 9. Nc2 a6 10. a4 d6
1964 Tel Aviv olm fin-A – Round 6 – Botvinnik, Mikhail – 1/2-1/2 – Bobotsov, Milko G – G116 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. d3 Nge7 7. O-O O-O 8. Ne1 Rb8 9. Nc2 a6 10. a4 d6
1964 WchT U26 11. fin-A – Round 2.1 – Hort, Vlastimil – 1-0 – Pelts, Roman – G19 1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 e5 6. d3 Nge7 7. O-O O-O 8. Rb1 a6 9. a3 Rb8 10. Qa4 d6
1965 Budapest – Round 1 – Filipowicz, Andrzej – 0-1 – Kadrev, Zdravko – G1 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. Nc3 e5 6. d3 Nge7 7. O-O O-O 8. Rb1 Rb8 9. a3 d6 10. b4 b6
1965 Hoogovens – Round 13 – Lengyel, Laszlo – 1-0 – Van den Berg, Cees – G102 1. Nf3 c5 2. g3 Nc6 3. Bg2 e5 4. c4 g6 5. Nc3 Bg7 6. d3 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 Be6 10. Ne3 Qd7
1966 ARMIES-ch3 Prague CZE – Round 2 – Pribyl, Josef – 1-0 – Rakovsky, Emile – G1 1. c4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 e5 5. Nc3 Nc6 6. d3 Nge7 7. O-O O-O 8. a3 a6 9. Rb1 Rb8 10. b4 cxb4
1966 Hoogovens 28th – Round 1 – Bilek, Istvan – 1-0 – Van den Berg, Cees – G8 1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. d3 g6 5. g3 Bg7 6. Bg2 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 Nf5 10. Rb1 Bd7
1966 La Habana olm prel – Round 7 – Vyzantiadis, Lazaros – 0-1 – Bobotsov, Milko G – G100 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. Bd2 d6 9. a3 b6 10. Rb1 Bb7
1966 Sunderland ch-BCF – Round 1 – Booth Del Valle, Alexandra Nicole – 0-1 – Clarke, Paul R H – G23 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 e5 6. Nc3 Nge7 7. d3 O-O 8. a3 a6 9. Rb1 Rb8 10. Ne4 d6
1966 URS Team Ch – Round 1 – Savon, Vladimir – 1-0 – Kapengut, Albert – G73 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 e5 6. Nc3 Nge7 7. d3 O-O 8. Bd2 a6 9. Ne1 Rb8 10. a4 d6
1967 FRG Ch 09th – Round 1 – Stern, Dieter – 1-0 – Hecht, Hans-Joachim – G1 1. c4 c5 2. Nf3 g6 3. g3 Bg7 4. Nc3 Nc6 5. Bg2 e5 6. d3 Nge7 7. O-O O-O 8. Rb1 d6 9. a3 f5 10. Bd2 h6
1968 Budapest – Round 1 – Radnoti, Bela – 0-1 – Szilagyi, Gyorgy Laszlo – G73 1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e5 6. O-O Nge7 7. d3 O-O 8. a3 d6 9. Rb1 a5 10. Bd2 h6
1968 Hoogovens – Round 13 – Langeweg, Kick – 0-1 – Bobotsov, Milko G – G111 1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. Rb1 d6 9. a3 a5 10. Ne1 Be6
1968 Lugano olm - Round 1 - Stull, Norbert - 0-1 - Adamski, Jan - G466 1. Nf3 g6 2. g3 Bg7 3. Bg2 c5 4. c4 Nc6 5. Nc3 e5 6. d3 Nge7 7. O-O O-O 8. Bd2 d6 9. Rb1 Bg4 10. h3 Be6
1968 POL Ch 25th – Round 12 – Schmidt, Wlodzimierz – 1-0 – Zoltek, Tadeusz – G74 1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. d3 g6 5. g3 Bg7 6. Bg2 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 h6 10. Rb1 Rb8
1968 SWE Ch – Round 15 – Ljungquist, Lennart – 1-0 – Horberg, Bengt-Eric – G71 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 e5 6. d3 Nge7 7. O-O O-O 8. Bd2 h6 9. Qc1 Kh7 10. Rb1 d6
1968 Toth Memorial – Round 1 – Barcza, Gedeon – 1/2-1/2 – Barczay, Laszlo – G9 1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 e5 6. d3 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 Rb8 10. Rb1 Be6
1968 URS Team Ch – Round 1 – Butnorius, Algimantas – 0-1 – Taimanov, Mark E – G181 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 e5 6. Nc3 Nge7 7. d3 O-O 8. a3 f5 9. Nd5 Rb8 10. Bg5 h6
1968 URS Team Ch – Round 1 – Gaprindashvili, Nona – 1-0 – Titorenko, Natalia I – G191 1. Nf3 g6 2. g3 c5 3. Bg2 Nc6 4. O-O Bg7 5. d3 e5 6. c4 Nge7 7. Nc3 O-O 8. Ne1 f5 9. Nc2 Rb8 10. Ne3 a6
1969 Glasgow Congress Invitation – Round 4 – Golombek, Harry – 1/2-1/2 – Keene, Raymond D – G14 1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e5 6. O-O Nge7 7. d3 O-O 8. Rb1 d6 9. a3 a5 10. Bd2 Rb8
1969 Palma de Mallorca – Round 16 – Larsen, Benjamin Holsko – 1-0 – Bobotsov, Milko G – G135 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 e5 6. O-O Nge7 7. d3 O-O 8. a3 d6 9. Rb1 b6 10. b4 Bb7
Malta ol (Men) 1980 – Round 2 – Heim, Sverre – 1/2-1/2 – Ribli, Zoltan – G33 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5 6. d3 Nge7 7. O-O O-O 8. Ne1 d6 9. Nc2 Be6 10. Ne3 a6
Superbet Blitz 2019 – Round 18.1 – Mamedyarov, Shakhriyar – 0-1 – Le, Quang Liem – G86 1. c4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. O-O e5 6. Nc3 Nge7 7. a3 O-O 8. d3 d6 9. Ne1 Be6 10. Nd5 Rb8
World Blitz 2018 – Round 13.49 – Van Foreest, Jorden – 1/2-1/2 – Tukhaev, Adam – G788 1. c4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Nc6 5. O-O e5 6. Nc3 Nge7 7. a3 O-O 8. d3 d6 9. Rb1 a5 10. Ne1 Be6

A37y — Symmetrical

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3

Eval: [+0.26]

Les coups candidats

7…O-O — 67.8% (2442 parties) →

Ambassadeurs : Miezis, Normunds (13x), Bue, Gunnar (7x), Bobotsov, Milko G (6x), Gomes, Mary Ann (6x), Fuller, Maxwell L (5x), Jirovsky, Pavel (5x), Spangenberg, Hugo (5x), Bayer, Wolfgang, Dr. (4x)

7…d6 — 30.3% (1090 parties) →

Ambassadeurs : Rogers, Ian (5x), Maugg, Ludwig (5x), Pierrot, Facundo (4x), Martin Gonzalez, Angel (4x), Parligras, Mircea-Emilian (4x), Partos, Charles (3x), Calotescu, Ana-Cristina (3x), Iljushin, Alexei (3x)

7…a6 — 0.8% (29 parties)

Ambassadeurs : Ksieski, Zbigniew (5x), Danner, Georg (2x), Chlpik, Martin (2x), Ditt, Egon (1x), Kriens, Michael (1x), Bilek, Istvan (1x), D'Amore, Carlo (1x), Fornahl, Gerd (1x)

7…h6 — 0.5% (19 parties)

Ambassadeurs : De Martino, Adriano (1x), Tortarolo Marco (1x), Stull, Norbert (1x), Knol, Dirk L (1x), Christensen, Niels (1x), Hellmayr, Alois (1x), Loginov, Valery A (1x), Zimmer, Ralph (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…O-O	7…d6	7…a6	7…h6
<1800	94	68%	31%	—	—
1800-2200	1441	71%	26%	1%	1%
2200-2600	1584	63%	35%	1%	0%
2600+	16	38%	62%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	7…O-O	7…d6	7…a6	7…h6
1950s	5	100%	—	—	—
1960s	45	84%	16%	—	—
1970s	97	73%	25%	—	1%
1980s	189	64%	33%	2%	1%
1990s	577	70%	28%	1%	0%
2000s	1068	68%	30%	0%	1%
2010s	1343	67%	31%	1%	1%
2020s	279	63%	35%	2%	0%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…O-O	67%	63%	▼ -4.5%
7…d6	31%	35%	▲ +3.8%
7…a6	1%	2%	▲ +1.0%
7…h6	1%	0%	-0.2%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 2 parties
Karpov, Aleksandr — 1 partie
Ju, Wenjun — 1 partie
Ding, Liren — 1 partie
Gukesh D — 1 partie

Parties historiques

7…O-O — 67.8% (2442 parties)

1953 — Griffiths, Derek Francis Kenneth vs Lloyd, Kenneth William — 1-0 — Hastings ENG
1957 — Holm, Sejer vs Petersen, Finn — 0-1 — Odense DEN
1958 — Byvshev, Vasily vs Kholmov, Ratmir D — 0-1 — Tashkent ch URS sf
1958 — Smyslov, Dmitri vs Bobotsov — 1-0 — Munich ol
1959 — Jaeger, Walter vs Lehmann, Heinz — 0-1 — FRG-ch Nuerenberg GER

7…d6 — 30.3% (1090 parties)

1960 — Böök, Eero vs Wotulo, Max — 0-1 — Leipzig GER
1961 — Savon, Vladimir vs Polugaevsky, Lev — 0-1 — Baku ch-URS
1966 — Gereben, Erno vs Gaprindashvili, Nona — 0-1 — Beverwijk NED
1968 — Langeweg, Kick vs Kavalek, Lubomir — 0-1 — Amsterdam NED
1968 — Najdorf, Miguel vs Uhlmann, Wolfgang — 1/2-1/2 — Lugano SUI

7…a6 — 0.8% (29 parties)

1983 — D'Amore, Carlo vs Danner, Georg — 1-0 — Banco di Roma
1985 — Bilek, Istvan vs Danner, Georg — 1/2-1/2 — Budapest HUN
1988 — Ditt, Egon vs Kriens, Michael — 1-0 — GER
1993 — Psakhis, Lev vs Kupreichik, Viktor D — 1/2-1/2 — Leeuwarden open
1996 — Hammes, Frank vs Ksieski, Zbigniew — 1/2-1/2 — Copenhagen DEN

7…h6 — 0.5% (19 parties)

1973 — Stull, Norbert vs Knol, Dirk L — 0-1 — Bad Mondorf
1984 — De Martino, Adriano vs Tortarolo Marco — 0-1 — ?
1990 — Loginov, Valery A vs Zimmer, Ralph — 1-0 — Kecskemet HUN
1999 — Christensen, Niels vs Hellmayr, Alois — 1-0 — Bad Wiessee GER
2001 — Olivares, Danields vs Guevara, Erick — 1/2-1/2 — Managua Sub-zt 2.3.2

Fin du contenu

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