A55o — Old Indian: Main Line, 8.Qc2 Re8

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.Be2 c6 7.O-O O-O 8.Qc2 Re8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte g5, paire de fous.
Faiblesses adverses : Be7 enfermé, Bc8 enfermé.
Problèmes : Bc1 enfermé, Be2 enfermé.
Plans :
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : paire de fous.
Faiblesses adverses : Bc1 enfermé, Be2 enfermé.
Problèmes : Be7 enfermé, Bc8 enfermé.
Plans :
● ...Bg4 — Développer Bc8, clouer Nf3
● ...c5 — Rupture
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A55o — Main Line

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.Be2 c6 7.O-O O-O 8.Qc2 Re8

Eval: [+0.88]

Les coups candidats

9.Rd1 — 65.4% (399 parties)

Ambassadeurs : Hickl, Joerg (6x), Spraggett, Kevin (3x), Schischke, Reinhard (3x), Anic, Darko (3x), Vukovic, Ivo (3x), Grabuzova, Tatiana (3x), Tolstikh, Nikolay (3x), Szymczak, Zbigniew (2x)

9.d5 — 11.1% (68 parties)

Ambassadeurs : Zagorskis, Darius (3x), Merlo, Carlos (2x), Priehoda, Vitezslav (2x), Janosevic, Dragoljub (1x), Ugrinovic, Dragan (1x), Saidy, Anthony (1x), Lombardy, William J (1x), Alcaraz Suarez, Juan Camilo (1x)

9.h3 — 8.2% (50 parties)

Ambassadeurs : Antoshin, Vladimir S (2x), Kevitz, Alexander (1x), Kupchik, Abraham (1x), De Souza Mendes, Joao (1x), Shocron, Ruben (1x), Gudmundsson, Gardar Vidir (1x), Larrain Cadiz, Eugenio (1x), Daus, Peter (1x)

9.Rb1 — 3.9% (24 parties)

Ambassadeurs : Antoshin, Vladimir S (1x), Muchnik, Khanan Lvovich (1x), Landenbergue, Claude (1x), Arlandi, Ennio (1x), Petran, Peter (1x), Cibulka, Vladimir (1x), Spears, Nicholas (1x), Ross, David (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.Rd1	9.d5	9.h3	9.Rb1
<1800	5	80%	—	20%	—
1800-2200	181	62%	8%	13%	2%
2200-2600	351	68%	13%	5%	5%
2600+	2	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	9.Rd1	9.d5	9.h3	9.Rb1
1920s	1	—	—	—	—
1930s	1	—	—	100%	—
1950s	8	62%	—	12%	12%
1960s	11	36%	36%	9%	—
1970s	5	20%	20%	40%	—
1980s	57	61%	9%	4%	5%
1990s	141	72%	10%	5%	6%
2000s	170	68%	12%	8%	3%
2010s	180	64%	11%	10%	3%
2020s	36	61%	8%	14%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.Rd1	64%	61%	▼ -2.8%
9.d5	11%	8%	▼ -2.8%
9.h3	10%	14%	▲ +3.9%
9.Rb1	3%	3%	+0.0%

Parties historiques

9.Rd1 — 65.4% (399 parties)

1951 — Musmann, Lothar vs Richter Becerra, Hans — 1/2-1/2 — Leipzig GER
1953 — Averbakh, Yuri L vs Kotov Lundqvist, Alex — 0-1 — Zurich SUI
1954 — Sanguinetti, Raul vs Martinez Smirnov, Gueorgui — 1-0 — Buenos Aires ARG
1954 — Najdorf, Miguel vs Bronstein, David I — 0-1 — Buenos Aires ARG
1958 — Panno, Oscar vs Emma, Jaime — 1-0 — Buenos Aires ARG

9.d5 — 11.1% (68 parties)

1962 — Janosevic, Dragoljub vs Ugrinovic, Dragan — 1/2-1/2 — Skopje ch17-YUG
1967 — Alcaraz Suarez, Juan Camilo vs Merlo, Carlos — 1/2-1/2 — Mar del Plata ARG
1967 — Abelenda Suarez, Saul vs Merlo, Carlos — 1/2-1/2 — Mar del Plata ARG
1968 — Saidy, Anthony vs Lombardy, William J — 0-1 — New York, NY USA
1976 — Hernandez Marquez, Jose De Jesus vs Ostos, Julio Eduardo — 1/2-1/2 — Cienfuegos City CUB

9.h3 — 8.2% (50 parties)

1936 — Kevitz, Alexander vs Kupchik, Abraham — 0-1 — USA-ch New York, NY USA
1954 — De Souza Mendes, Joao vs Shocron, Ruben — 0-1 — Mar del Plata ARG
1960 — Gudmundsson, Gardar Vidir vs Larrain Cadiz, Eugenio — 1-0 — Leipzig GER
1970 — Antoshin, Vladimir S vs Mutchnik, Larisa — 1-0 — ?
1970 — Antoshin, Vladimir S vs Muchnik, H. — 1-0 — Moscow RUS

9.Rb1 — 3.9% (24 parties)

1958 — Antoshin, Vladimir S vs Muchnik, Khanan Lvovich — 1-0 — Baku AZE
1981 — Petran, Peter vs Cibulka, Vladimir — 1/2-1/2 — Trencianske Teplice SVK
1988 — Landenbergue, Claude vs Arlandi, Ennio — 1/2-1/2 — Geneve-B Geneva SUI
1988 — Spears, Nicholas vs Ross, David — 1/2-1/2 — Vancouver BC CAN
1990 — Jamieson, Robert M vs Hickl, Joerg — 1/2-1/2 — Adelaide AUS

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d6→e5, b7→c6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● g5 (2v0)	—
Cases faibles	—	—
Centre	● d5 (3v2), ● e4 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Be2	● Be2 Enfermé (mob. 2)
Be7		● Be7 Enfermé (mob. 1)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5, ● d4-d5	● …c6-c5, ● …d6-d5

Partie
1927 Kecskemet I – Round 1 – Gilg, Karl – 1/2-1/2 – Sarkozy, Balazs – G3 1. d4 Nf6 2. Nf3 d6 3. c4 Nbd7 4. Nc3 c6 5. e4 e5 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. b3 Qc7 10. Bb2 Nf8
1936 USA Ch New York, NY USA – Round 1 – Kevitz, Alexander – 0-1 – Kupchik, Abraham – G2 1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 Nbd7 5. e4 Be7 6. Be2 O-O 7. O-O Re8 8. Qc2 c6 9. h3 Qc7 10. Be3 Nf8
1953 Candidats Tournament – Round 14 – Averbakh, Yuri L – 0-1 – Kotov Lundqvist, Alex – G86 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 e5 5. e4 Be7 6. Be2 O-O 7. O-O c6 8. Qc2 Re8 9. Rd1 Bf8 10. Rb1 a5
1953 Candidats Tournament – Round 17 – Stahlberg, Gideon – 0-1 – Kotov Lundqvist, Alex – G107 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 e5 5. e4 c6 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. b3 Bf8 10. Bb2 Nh5
1954 Buenos Aires – Round 1 – Sanguinetti, Raul – 1-0 – Martinez Smirnov, Gueorgui – G3 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 c6 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. Rd1 Qc7 10. Rb1 Nf8
1954 Buenos Aires – Round 2 – Najdorf, Miguel – 0-1 – Bronstein, David I – G11 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 c6 5. e4 e5 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. Rd1 Qc7 10. b3 Nf8
1954 Mar del Plata – Round 15 – De Souza Mendes, Joao – 0-1 – Shocron, Ruben – G111 1. c4 Nf6 2. Nf3 d6 3. d4 Nbd7 4. Nc3 e5 5. e4 c6 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. h3 Qc7 10. Be3 Nf8
1958 Argentina – Round 17 – Panno, Oscar – 1-0 – Emma, Jaime – G127 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. e4 Be7 6. Be2 O-O 7. O-O c6 8. Qc2 Re8 9. Rd1 Bf8 10. Bf1 a5
1960 Leipzig olm prel – Round 8 – Weinstein, Raymond – 1-0 – Jimenez Zerquera, Eleazar – G29 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 c6 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. Rd1 Qc7 10. Rb1 a6
1962 Skopje ch17-YUG – Round 12 – Janosevic, Dragoljub – 1/2-1/2 – Ugrinovic, Dragan – G103 1. c4 Nf6 2. Nc3 e5 3. Nf3 d6 4. d4 Nbd7 5. e4 c6 6. Be2 Be7 7. O-O O-O 8. Qc2 Re8 9. d5 a6 10. b4 Qc7
1963 BRA Ch – Round 9 – Camara, Helder – 1-0 – De Souza Mendes, Joao – G22 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 Be7 6. Be2 O-O 7. O-O Re8 8. Qc2 c6 9. b3 Qc7 10. Bb2 Nf8
1975 URS Team Ch – Round 1 – Gulko, Boris F – 1-0 – Zaichik, Gennadi – G94 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 Be7 6. Be2 O-O 7. O-O c6 8. Qc2 Re8 9. Be3 Bf8 10. Rad1 Qe7