A36x — English: Symmetrical, Botvinnik System, 5…d6, 8.d3 Rb8

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 Rb8 * ○ Trait aux Blancs

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 f4, b5 et d5 et la paire de fous.

Côté adverse. Les fous enfermés en g7 et c8.

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

Plans. Bg5 (Clouer Nf6).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur les cases fortes b4, d4, g4 et e5, des avant-postes en d4 et e5 et la paire de fous.

Côté adverse. Le fou enfermé en c1.

Plans. ...Bf5 (Développer Bc8) ; ...d5 (Rupture) ; ...e6 (Rupture) ; ...e5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3, d3→c4, d3→e4	● d6→c5, e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (3v0), ● b5 (2v0), ● d5 (3v1)	● b4 (2v0), ● d4 (2v1), ● g4 (2v0), ● e5 (2v0)
Cases faibles	—	—
Centre	● d5 (3v1), ● e4 (3v1)	● d4 (2v1), ● e5 (2v0)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 Ok (mob. 3)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	1 (c8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● d3-d4, ● e4-e5, ● f2-f3	● …d6-d5, ● …e7-e6, ● …e7-e5

Partie
1956 Marianske Lazne/Praha – Round 15 – Pachman, Ludek – 1-0 – Dworzynski, Roman – G98 1. c4 Nf6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. e4 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. Rb1 a6 10. a3 b5
1956 Moscow olm prel – Round 2 – Backlund, Gotthard – 0-1 – Dworzynski, Roman – G33 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. Bg5 a6 10. Qd2 b5
1958 Munich olm fin-A – Round 4 – Eliskases, Erich – 1/2-1/2 – Dittmann, Sieghart – G23 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. a3 a6 10. Rb1 Bd7
1961 Budapest-Leningrad m – Round 1.7 – Reshko, Aron – 1-0 – Honfi, Karoly – G3 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. d3 d6 6. e4 Nf6 7. Nge2 O-O 8. O-O Rb8 9. h3 a6 10. f4 Ne8
1961 Mar del Plata – Round 6 – Bielicki, Carlos – 0-1 – Najdorf, Miguel – G55 1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. e4 c5 6. Nge2 Nc6 7. O-O d6 8. d3 Rb8 9. Rb1 a6 10. a3 b5
1961 New York ch-USA – Round 9 – Byrne, David – 1/2-1/2 – Byrne, Ray – G42 1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. e4 c5 6. Nge2 Nc6 7. O-O d6 8. d3 Rb8 9. h3 a6 10. a4 Ne8
1963 FRG Ch Bad Pyrmont GER – Round 11 – Wolk, Sigmund – 1/2-1/2 – Ellrich, Paul – G22 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. Rb1 Bd7 10. h3 Ne8
1965 Rio de Janeiro – Round 1 – Toth, Peter – 0-1 – Stein, Leonid – G18 1. g3 g6 2. Bg2 Bg7 3. c4 Nf6 4. e4 d6 5. Ne2 O-O 6. O-O c5 7. Nbc3 Nc6 8. d3 Rb8 9. Rb1 Ne8 10. Be3 Nd4
1966 Hungary – Round 1 – Barcza, Gedeon – 1/2-1/2 – Haag, Ervin – G28 1. g3 Nf6 2. Bg2 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 c5 6. Nge2 Nc6 7. O-O d6 8. d3 Rb8 9. Rb1 Ne8 10. Be3 Bg4
1966 La Habana olm fin-C – Round 5 – Campomanes, Florencio – 1-0 – Kaplan, Julio – G12 1. c4 Nf6 2. Nc3 c5 3. e4 Nc6 4. g3 g6 5. Bg2 Bg7 6. Nge2 O-O 7. O-O d6 8. d3 Rb8 9. h3 a6 10. a4 Ne8
1967 Oxford ch-BCF – Round 9 – Burnett, Leon P – 1/2-1/2 – Hindle, Owen M – G79 1. c4 g6 2. Nc3 Bg7 3. e4 d6 4. g3 Nf6 5. Bg2 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. Rb1 a6 10. a3 b5
1967 POL Team Ch 20th – Round 7 – Jagodzinski, Waldemar – 0-1 – Brzozka, Stefan – G41 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 c5 6. Nge2 Nc6 7. O-O O-O 8. d3 Rb8 9. h3 a6 10. Be3 b5
1968 Palma de Mallorca – Round 4 – Byrne, David – 1-0 – Toran Albero, Roman – G37 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 c5 5. e4 Nc6 6. Nge2 O-O 7. O-O d6 8. d3 Rb8 9. h3 Ne8 10. Be3 Nc7
1969 New York ch-USA – Round 6 – Byrne, David – 1-0 – Zuckerman, Bernard – G27 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 c5 6. Nge2 Nc6 7. O-O Rb8 8. d3 d6 9. a4 a6 10. h3 Ne8
1969 US Open – Round 10 – Poschel, Paul – 1/2-1/2 – Byrne, Ray – G26 1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. e4 c5 6. Nge2 Nc6 7. O-O d6 8. d3 Rb8 9. Rb1 b6 10. a3 Bb7
1969 Vrsac – Round 14 – Byrne, Donald – 1/2-1/2 – Rossolimo, Nicolas – G83 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. d3 d6 6. e4 Nf6 7. Nge2 O-O 8. O-O Rb8 9. h3 a6 10. a4 Ne8
1969 Vrsac – Round 8 – Byrne, Donald – 1-0 – Paoli, Enrico – G52 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. h3 a6 10. a4 e5
1972 San Antonio – Round 1 – Byrne, David – 1/2-1/2 – Kaplan, Julio – G119 1. g3 g6 2. Bg2 Bg7 3. c4 Nf6 4. Nc3 O-O 5. e4 c5 6. Nge2 Nc6 7. d3 d6 8. O-O Rb8 9. h3 a6 10. a4 Ne8
6. World Blitz 2010 – Round 8.8 – Kramnik, Vladimir – 1-0 – Radjabov, Teimour – G51 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 O-O 5. e4 d6 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. h3 a6 10. f4 Bd7
SportAccord Blitz Men 2013 – Round 17.1 – Wang, Yue(SH) – 0-1 – Aronian, Levon – G126 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 c5 6. Nge2 Nc6 7. O-O d6 8. d3 Rb8 9. h3 a6 10. Be3 b5
Tallinn 1973 – Round 1 – Rytov, Boris – 0-1 – Spassky, Boris V. – G22 1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. d3 Nf6 7. Nge2 O-O 8. O-O Rb8 9. Rb1 b6 10. d4 cxd4
World Blitz 2016 – Round 20.34 – Flores, Diegoego – 0-1 – Fressinet, Laurent – G797 1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 c5 7. d3 Nc6 8. O-O Rb8 9. h3 a6 10. a4 Nd4
World Blitz 2017 – Round 1.3 – Karjakin, Sergey – 1/2-1/2 – Onischuk, Vasilisa – G21 1. e4 d6 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 c5 7. O-O Nc6 8. d3 Rb8 9. h3 a6 10. f4 Nd7

A36x — Symmetrical Botvinnik System

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 Rb8

Eval: [-0.02]

Les coups candidats

9.h3 — 58.6% (743 parties)

Ambassadeurs : Weyerstrass, Ronald (7x), Byrne, Donald (3x), Byrne, David (3x), Kotronias, Vasilios (3x), Volosin, Vladimir (3x), Metaxasz, Vaszilisz (3x), Biskopics, Marton (3x), Dronavalli, Harika (3x)

9.Rb1 — 21.3% (270 parties)

Ambassadeurs : Najdorf, Miguel (3x), Sunye Neto, Jaime (3x), Hebden, Mark L (2x), Webster, Andrew A (2x), Pfaff, Timo (2x), Becker, Hartmuth, Dr. (2x), Leitao, Rafael (2x), Stverak, Milan (2x)

9.f4 — 9.5% (120 parties)

Ambassadeurs : ? (2x), Santos Izquierdo, Carlos (2x), Fierro Baquero, Martha L. (2x), Henderson, Gavin Nigel (1x), Norman, Kenneth I (1x), Bruno, Fabio (1x), Bukal, Vladimir Jr. (1x), Weltz, Elvira (1x)

9.a3 — 5.1% (65 parties)

Ambassadeurs : Miezis, Normunds (3x), Eliskases, Erich (1x), Dittmann, Sieghart (1x), Anderson, David (1x), Hanken, Jerome B (1x), Shvidler, Eliahu (1x), Bruk, Ofer (1x), Billard, Michel (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.h3	9.Rb1	9.f4	9.a3
<1800	27	44%	19%	11%	7%
1800-2200	545	60%	19%	11%	4%
2200-2600	493	61%	22%	7%	6%
2600+	7	86%	—	—	14%

Évolution par décennie (% des parties)

Décennie	N parties	9.h3	9.Rb1	9.f4	9.a3
1920s	1	100%	—	—	—
1950s	3	—	33%	—	33%
1960s	26	58%	31%	4%	4%
1970s	21	48%	38%	5%	5%
1980s	51	53%	25%	12%	8%
1990s	232	53%	27%	10%	5%
2000s	315	50%	28%	10%	4%
2010s	488	65%	14%	10%	6%
2020s	131	73%	16%	5%	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.h3	65%	73%	▲ +7.6%
9.Rb1	14%	16%	▲ +2.3%
9.f4	10%	5%	▼ -5.5%
9.a3	6%	4%	▼ -1.9%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 1 partie
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie

Parties historiques

9.h3 — 58.6% (743 parties)

1922 — Hilse, Wilhelm H vs Wegemund, Otto — 0-1 — Bad Oeynhausen GER
1961 — Byrne, David vs Byrne, Ray — 1/2-1/2 — New York, NY USA
1961 — Reshko, Aron vs Honfi, Karoly — 1-0 — Budapest HUN
1966 — Campomanes, Florencio vs Kaplan, Julio — 1-0 — La Habana olm fin-C
1967 — Jagodzinski, Waldemar vs Brzozka, Stefan — 0-1 — Wroclaw POL

9.Rb1 — 21.3% (270 parties)

1956 — Pachman, Ludek vs Dworzynski, Roman — 1-0 — Marianske Lazne
1960 — Goldenberg, Edgardo vs Najdorf, Miguel — 0-1 — Buenos Aires ARG
1961 — Bielicki, Carlos vs Najdorf, Miguel — 0-1 — Mar del Plata ARG
1963 — Wolk, Sigmund vs Ellrich, Paul — 1/2-1/2 — FRG-ch Bad Pyrmont GER
1965 — Toth, Peter vs Stein, Leonid — 0-1 — Rio de Janeiro BRA

9.f4 — 9.5% (120 parties)

1968 — Henderson, Gavin Nigel vs Norman, Kenneth I — 1-0 — Bristol ENG
1975 — Weyerstrass, Ronald vs Nepveu, Manuel — 0-1 — BSG Group 2
1981 — Syrett, Edward vs Cress, D — 0-1 — Palo Alto
1982 — Bruno, Fabio vs Bukal, Vladimir Jr. — 1-0 — Catanzaro
1983 — Weltz, Elvira vs De Laporte, Karin — 0-1 — Pang

9.a3 — 5.1% (65 parties)

1958 — Eliskases, Erich vs Dittmann, Sieghart — 1/2-1/2 — Munich olm fin-A
1967 — Anderson, David vs Hanken, Jerome B — 0-1 — Los Angeles, CA USA
1971 — Dzindzichashvili, Roman vs Tseitlin, Mark D — 1/2-1/2 — Ch URS Leningrad RUS
1980 — Billard, Michel vs Barbeau, Sylvain — 1-0 — Quebec Collegiate ch
1983 — Braunberger, Federico vs Castagnetta, Gianluca — 1-0 — Venice ITA

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