A55f — Old Indian: 5.e4 Be7 6.g3 c6 7.Bg2 O-O 8.O-O Re8

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.g3 c6 7.Bg2 O-O 8.O-O Re8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte g5, paire de fous.
Faiblesses adverses : Be7 enfermé, Bc8 enfermé.
Problèmes : Bc1 enfermé, Bg2 enfermé, arriéré f2.
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 : arriéré f2, Bc1 enfermé, Bg2 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

A55f —

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.g3 c6 7.Bg2 O-O 8.O-O Re8

Eval: [+0.83]

Les coups candidats

9.h3 — 58.0% (422 parties)

Ambassadeurs : Poldauf, Dirk (3x), Paehtz, Thomas (3x), Smyslov, Vladimir (2x), Emma, Jaime (2x), Sergievsky, Vladimir D (2x), Benko, Pal (2x), Vyzmanavin, Alexey (2x), Serper, Grigory (2x)

9.Re1 — 15.1% (110 parties)

Ambassadeurs : Ivanov, Igor V. (2x), Gulko, Boris (2x), Espig, Lutz (2x), Hegeler, Anja (2x), Covic, Damir (2x), Reinecke, Katharina (2x), Platz, Hans (1x), Seiffert, Gabriel Pamplona (1x)

9.b3 — 10.0% (73 parties)

Ambassadeurs : Timman, Jan H (3x), Walsh, James (2x), Lokvenc, Josef (2x), Gomez Fontal, Felix Manuel (2x), Acacio Gomez, Arcenio Antonio (2x), Hadzala, Daniel (2x), Vaitonis, Povilas (1x), Brunet, Phil (1x)

9.Qc2 — 7.1% (52 parties)

Ambassadeurs : Dobrovolsky, Ladislav (2x), Smejkal, Jan (1x), Seifert, Milan (1x), Olafsson, Fridrik (1x), Lindblom, Ake (1x), Uhlmann, Wolfgang (1x), Bilek, Istvan (1x), Correa, Aron Antunes (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9.h3	9.Re1	9.b3	9.Qc2
<1800	5	40%	60%	—	—
1800-2200	216	58%	12%	7%	10%
2200-2600	387	59%	18%	8%	6%
2600+	4	—	—	75%	—

Évolution par décennie (% des parties)

Décennie	N parties	9.h3	9.Re1	9.b3	9.Qc2
1910s	1	100%	—	—	—
1920s	1	—	—	100%	—
1930s	4	50%	—	50%	—
1940s	8	75%	—	25%	—
1950s	17	29%	6%	41%	6%
1960s	27	70%	—	7%	7%
1970s	32	47%	25%	19%	—
1980s	51	65%	18%	12%	4%
1990s	144	57%	17%	11%	7%
2000s	176	61%	14%	7%	7%
2010s	213	53%	20%	8%	10%
2020s	54	74%	4%	4%	7%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9.h3	53%	74%	▲ +21.5%
9.Re1	20%	4%	▼ -16.0%
9.b3	8%	4%	▼ -3.8%
9.Qc2	10%	7%	▼ -2.5%

Joueurs célèbres

Champions du monde dans cette position

Smyslov, Vladimir — 2 parties
Anand, Viswanathan — 1 partie
Kasparov, Garry — 1 partie
Botvinnik, Mikhail — 1 partie

Parties historiques

9.h3 — 58.0% (422 parties)

1919 — Rubinstein, Akiba vs Sodermark — 1-0 — Stockholm Handicap
1936 — Iliesco, Juan vs Guimard, Carlos E — 0-1 — Mar del Plata ARG
1936 — Konstantinopolsky, Alexander vs Freiman, Sergey Nikolaevich — 1-0 — Tournament
1942 — Mikenas, Vladas vs Smyslov, Vladimir — 1-0 — Kuibyshev
1943 — Smyslov, Vladimir vs Panov, Vasily — 1-0 — Moscow RUS

9.Re1 — 15.1% (110 parties)

1951 — Platz, Hans vs Seiffert, Gabriel Pamplona — 1-0 — Schwerin GER
1971 — Browne, Walter Shawn vs Richter, Yosef — 1-0 — Netanya ISR
1973 — Keene, Raymond D vs Schmid, Leo — 1-0 — Gstaad
1977 — Gulko, Boris vs Espig, Lutz — 1-0 — Polancia Zdroj
1977 — Gulko, Boris vs Espig, Lutz — 1-0 — ?

9.b3 — 10.0% (73 parties)

1929 — Smorodsky, Andrey vs Nenarokov, Vladimir — 1-0 — Tbilisi GEO
1936 — Saemisch, Friedrich vs Schoenmann, Wilhelm — 1-0 — Liberec
1939 — Lilienthal, Andor vs Panov, Vasily — 1/2-1/2 — Leningrad RUS
1944 — Luckis, Marcos vs Maderna, Carlos — 0-1 — Mar del Plata ARG
1949 — Vaitonis, Povilas vs Brunet, Phil — 1-0 — Arvida

9.Qc2 — 7.1% (52 parties)

1956 — Olafsson, Fridrik vs Lindblom, Ake — 1-0 — Helsinki FIN
1962 — Uhlmann, Wolfgang vs Bilek, Istvan — 1-0 — Stockholm SWE
1965 — Smejkal, Jan vs Seifert, Milan — 1-0 — Harrachov
1983 — Correa, Aron Antunes vs Garcia Palermo, Carlos Horacio — 0-1 — Porto Alegre
1989 — Mozna, Eva vs Modrova, Hana — 1/2-1/2 — Bohemians women

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	● f2	—
Chaînes	● f2→g3, h2→g3	● d6→e5, b7→c6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v2)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bg2	● Bg2 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
1936 Mar del Plata – Round 9 – Iliesco, Juan – 0-1 – Guimard, Carlos E – G66 1. d4 Nf6 2. c4 d6 3. g3 Nbd7 4. Bg2 e5 5. Nf3 Be7 6. Nc3 O-O 7. O-O c6 8. e4 Re8 9. h3 Qc7 10. Be3 Nf8
1939 Leningrad/Moscow – Round 2 – Lilienthal, Andor – 1/2-1/2 – Panov, Vasily – G13 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. O-O c6 8. e4 Re8 9. b3 Nf8 10. Bb2 Ng6
1942 Kuibyshev – Round 2 – Mikenas, Vladas – 1-0 – Smyslov, Vladimir – G9 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. g3 e5 5. Bg2 Be7 6. O-O O-O 7. Nc3 c6 8. e4 Re8 9. h3 Qc7 10. Be3 Nf8
1944 Mar del Plata – Round 6 – Luckis, Marcos – 0-1 – Maderna, Carlos – G53 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 Be7 6. g3 O-O 7. Bg2 c6 8. O-O Re8 9. b3 Bf8 10. Bb2 a5
1945 Moskou ch-URS – Round 1 – Alatortsev, Vladimir N. – 1/2-1/2 – Rudakovsky, Iosif – G37 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. g3 e5 5. Bg2 Be7 6. Nc3 O-O 7. O-O c6 8. e4 Re8 9. h3 Qc7 10. Be3 Nf8
1948 Budapest – Round 7 – Benko, Pal – 0-1 – Tartakower, Savielly – G36 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. g3 Be7 6. Bg2 O-O 7. O-O c6 8. e4 Re8 9. h3 Qc7 10. Be3 Nf8
1948 Moskou ch-URS – Round 16 – Furman, Slavomir – 1-0 – Panov, Vadim – G131 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 e5 5. g3 c6 6. e4 Be7 7. Bg2 O-O 8. O-O Re8 9. h3 Qc7 10. Be3 Nf8
1950 Dubrovnik olm – Round 15 – Najdorf, Miguel – 1/2-1/2 – Tartakower, Savielly – G222 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 Be7 6. g3 O-O 7. Bg2 Re8 8. O-O c6 9. b3 Qc7 10. Bb2 Nf8
1954 Amsterdam olm – Round 1 – Walsh, James – 0-1 – Lokvenc, Josef – G19 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 Be7 6. g3 O-O 7. Bg2 c6 8. O-O Re8 9. b3 Bf8 10. Bb2 a5
1954 Mar del Plata – Round 21 – De Souza Mendes, Joao – 0-1 – Eliskases, Erich – G155 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. g3 c6 6. e4 Be7 7. Bg2 O-O 8. O-O Re8 9. b3 Qc7 10. Bb2 Nf8
1954 Montevideo – Round 7 – Letelier Martner, Rene – 1-0 – Canchomoni Olivera, Josue Gabriel – G63 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. g3 e5 5. Bg2 c6 6. O-O Be7 7. Nc3 O-O 8. e4 Re8 9. d5 c5 10. Ne1 g6
1959 HUN Ch Budapest HUN – Round 6 – Lengyel, Levente – 1-0 – Hevizi, Laszlo Dr – G24 1. c4 e5 2. Nc3 Nf6 3. g3 d6 4. Bg2 c6 5. Nf3 Be7 6. O-O O-O 7. d4 Nbd7 8. e4 Re8 9. h3 Bf8 10. Be3 Qa5
1959 Mar del Plata – Round ? – Rossetto, Hector – 1-0 – De Souza Mendes, Joao – G90 1. c4 Nf6 2. Nc3 e5 3. g3 Be7 4. Bg2 c6 5. d4 d6 6. e4 O-O 7. Nf3 Nbd7 8. O-O Re8 9. h3 Bf8 10. d5 cxd5
1960 Bariloche – Round ? – Esposito, Alfredo – 1-0 – Emma, Jaime – G37 1. c4 e5 2. Nc3 d6 3. g3 Be7 4. Bg2 c6 5. d4 Nd7 6. Nf3 Ngf6 7. e4 O-O 8. O-O Re8 9. h3 Bf8 10. Be3 a6
1960 Bariloche – Round 7 – Bianco Esposito, Antonio – 1-0 – Emma, Jaime – G29 1. c4 e5 2. Nc3 d6 3. g3 Be7 4. Bg2 c6 5. d4 Nd7 6. Nf3 Ngf6 7. e4 O-O 8. O-O Re8 9. h3 Bf8 10. Be3 a6
1961 Sarajevo – Round 8 – Gligorić, Svetozar – 1-0 – Marinkovic, Milan – G38 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 Be7 6. g3 O-O 7. Bg2 Re8 8. O-O c6 9. h3 Qc7 10. Be3 Bf8
1961 URS-ch28 – Round ? – Khasin, Abram – 1/2-1/2 – Spassky, Boris V. – G2 1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Nf3 d6 5. Bg2 Nbd7 6. O-O Be7 7. e4 O-O 8. d4 Re8 9. h3 Bf8 10. Be3 b6
1961 URS-ch29 sf Novgorod – Round 14 – Rosenfeld, Isai K – 1-0 – Katalymov, Boris – G40 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. O-O Re8 8. e4 c6 9. d5 Nf8 10. Ne1 cxd5
1961 Zevenaar – Round 11 – Lehmann, Heinz – 1-0 – Henneberke, Frans – G13 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 c6 7. O-O O-O 8. e4 Re8 9. h3 Bf8 10. Be3 Qa5
1962 Budapest-Warsaw m – Round ? – Szukszta, Janus – 1-0 – Flesch, Janos – G13 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 c6 6. e4 Be7 7. Bg2 O-O 8. O-O Re8 9. b3 a6 10. Bb2 Bf8
1962 Stockholm Interzonal – Round 20 – Uhlmann, Wolfgang – 1-0 – Bilek, Istvan – G177 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Nf3 e5 5. g3 Be7 6. Bg2 O-O 7. O-O c6 8. e4 Re8 9. Qc2 Bf8 10. h3 a6
1962 Varna olm – Round 1 – Bergraser, Volf – 1-0 – Etcheverry, Eduardo – G46 1. d4 Nf6 2. Nf3 d6 3. g3 Nbd7 4. Bg2 c6 5. c4 e5 6. Nc3 Be7 7. e4 O-O 8. O-O Re8 9. h3 Bf8 10. d5 Qb6
1964 DEN Ch Holstebro – Round 11 – Jakobsen, Ole – 1/2-1/2 – Pedersen, Eigil – G39 1. Nf3 d6 2. d4 Nf6 3. g3 Nbd7 4. c4 e5 5. Bg2 Be7 6. O-O O-O 7. Nc3 c6 8. e4 Re8 9. d5 c5 10. h3 Rf8
1964 YUG Ch 19th – Round 2 – Sokolov, Vladimir – 1/2-1/2 – Pirc, Vasja – G5 1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 e5 5. e4 Be7 6. g3 O-O 7. Bg2 c6 8. O-O Re8 9. h3 a5 10. Be3 Bf8
1965 Harrachov U26 – Round 5 – Smejkal, Jan – 1-0 – Seifert, Milan – G12 1. c4 e5 2. Nc3 Nf6 3. g3 Be7 4. Bg2 d6 5. Nf3 c6 6. O-O Nbd7 7. d4 O-O 8. e4 Re8 9. Qc2 Qc7 10. h3 Nf8
1968 Buenos Aires – Round 3 – Foguelman, Alberto – 1-0 – Guimard, Carlos – G30 1. d4 Nf6 2. c4 d6 3. g3 Nbd7 4. Bg2 e5 5. Nf3 c6 6. O-O Be7 7. Nc3 O-O 8. e4 Re8 9. h3 Bf8 10. Be3 a5
1968 ROM Ch – Round 4 – Ungureanu, Emil – 1-0 – Urzica, Aurel – G20 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. O-O c6 8. e4 Re8 9. h3 exd4 10. Nxd4 Nb6
1972 San Antonio – Round 8 – Hort, Vlastimil – 1-0 – Smith, Kenneth – G17 1. c4 Nf6 2. Nc3 c6 3. e4 e5 4. Nf3 d6 5. d4 Nbd7 6. g3 Be7 7. Bg2 O-O 8. O-O Re8 9. h3 Qc7 10. Be3 Bf8
Paris Immopar rapid 1991 – Round 3 – Timman, Jan H – 1/2-1/2 – Anand, Viswanathan – G14 1. c4 Nf6 2. Nc3 d6 3. d4 e5 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. O-O c6 8. e4 Re8 9. b3 a6 10. a4 a5
World Rapid 2019 – Round 14.59 – Yuffa, Daniil – 1-0 – Tsoi, Dmitry – G928 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. O-O c6 8. e4 Re8 9. h3 a5 10. Be3 exd4

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