A64a — Benoni: Fianchetto, 11…Re8

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O Nbd7 10.Nd2 a6 11.a4 Re8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plan principal. Exploiter la case forte e4.

Atouts. Les Blancs s'appuient sur une majorité de pions à l'centre (2 contre 1), la case forte e4, un fou actif en g2, la paire de fous et la colonne semi-ouverte c.

Côté adverse. Le fou enfermé en c8.

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

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plan principal. Exploiter la case forte e5.

Atouts. Les Noirs s'appuient sur une majorité de pions à l'aile_dame (3 contre 2), la case forte e5, la paire de fous et la colonne semi-ouverte e.

Côté adverse. Le fou enfermé en c1.

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

Plans. ...c4 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● f2→g3, h2→g3	● d6→c5, b7→a6, f7→g6, h7→g6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (3v2)	● e5 (3v0)
Cases faibles	● e4	● d5
Centre	● d5 (2v1), ● e4 (3v2)	● d4 (1v0), ● e5 (3v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bg2	● Bg2 Actif (mob. 4)
Bg7		● Bg7 Ok (mob. 3)
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	● e2-e3, ● f2-f3	● …c5-c4

Partie
1953 Bucharest – Round 11 – O'Kelly de Galway, Alberic – 1/2-1/2 – Tolush, Alexander V – G103 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 a6
1953 Candidats Tournament – Round 1 – Euwe, Max – 1-0 – Kotov Lundqvist, Alex – G3 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Nbd7
1954 Bucharest – Round 2 – Stahlberg, Gideon – 0-1 – Kluger, Carsten – G31 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Re8
1955 Budapest HUN – Round ? – Gereben, Erno – 0-1 – Kluger, Gyula – G11 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Nd2 a6
1955 Buenos Aires CA – Round 1 – Toran Albero, Roman – 1/2-1/2 – Bianco Esposito, Antonio – G3 1. c4 Nf6 2. d4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Re8
1955 Buenos Aires CA – Round 16 – Donner, H. – 1-0 – Bianco Esposito, Antonio – G114 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Nbd7 8. g3 Bg7 9. Bg2 O-O 10. O-O a6
1955 Long Beach US-open – Round 10 – Rossolimo, Nicolas – 1-0 – Sherwin, James T – G53 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7
1955 Mar del Plata – Round 8 – Dodero, Emilio – 0-1 – Najdorf, Miguel – G54 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Re8
1955 Moscow Ch – Round 3 – Shcherbakov, Vitaly – 0-1 – Vasiukov, Evgeni – G18 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Nd2 a6
1956 Moscow olm fin-A – Round 5 – Szabo, Ladislav – 1-0 – Unzicker, Wolfgang – G71 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7
1956 URS Ch sf – Round ? – Geller, Alexander – 1/2-1/2 – Zilber, Israel – G13 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 O-O 5. Nf3 d6 6. O-O c5 7. d5 e6 8. Nc3 exd5 9. cxd5 Re8 10. Nd2 a6
1956 URS Ch, semi final – Round 1 – Buslaev, Aleksander – 1-0 – Tal, Mikhail – G9 1. c4 Nf6 2. d4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Nd2 a6
1957 URS Ch, semi final – Round 1 – Kikiani, Tamaz – 1-0 – Buslaev, Aleksander – G32 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Nbd7
1960 Leningrad ch-URS – Round 14 – Averbach, Y. – 1/2-1/2 – Kortchnoi, V. – G129 1. d4 Nf6 2. c4 g6 3. g3 c5 4. d5 e6 5. Nc3 exd5 6. cxd5 d6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 a6
1961 Palanga Baltic Ch – Round ? – Lapienis, Donatas – 0-1 – Buslaev, Aleksander – G29 1. d4 Nf6 2. c4 g6 3. g3 c5 4. d5 e6 5. Nc3 exd5 6. cxd5 d6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Re8
1962 Capablanca Memorial – Round 12 – Abad Gonzalez, Jose Miguel – 1-0 – Polugaevsky, Lev – G116 1. d4 Nf6 2. g3 c5 3. d5 e6 4. c4 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 Nbd7
1963 Capablanca Memorial – Round 14 – Calero, Ivan – 1-0 – Tal, Mikhail – G131 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Re8
1963 LAT Ch – Round ? – Korelov, Alexander P – 1-0 – Zhuravliov, Valerij – G15 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Nd2 Nbd7
1964 Budapest ch-HUN – Round 1 – Gasztonyi, Endre – 0-1 – Forintos, Gyozo V – G56 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Re8
1964 Hoogovens – Round 1 – Van Scheltinga, Theo – 0-1 – Lengyel, Laszlo – G10 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Nbd7
1964 Magdeburg ch DDR – Round 16 – Starck, Bodo – 0-1 – Golz, Werner – G39 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O a6 10. a4 Re8
1964 Tel Aviv olm – Round 1 – Yepez, Trotzky – 0-1 – Golz, Werner – G39 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Nd2 Nbd7
1964 Tel Aviv olm prel – Round 6 – Yepez, Trotzky – 0-1 – Golz, Werner – G214 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7
1965 Budapest2 – Round 2 – Navarovszky, Laszlo – 1/2-1/2 – Lengyel, Levente – G19 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Bg2 g6 7. Nc3 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Re8
1966 Tbilisi ch-URS – Round 2 – Liberzon, Vladimir M – 0-1 – Stein, Leon Rico – G15 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. g3 c5 6. d5 e6 7. Bg2 exd5 8. cxd5 d6 9. O-O Re8 10. Nd2 a6
1966 Tbilisi ch-URS – Round 6 – Osnos, Viatcheslav – 1/2-1/2 – Stein, Leon Rico – G54 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 c5 6. d5 e6 7. Nc3 exd5 8. cxd5 d6 9. O-O a6 10. a4 Re8
1966 USSR – Round 1 – Furman, Slavomir – 0-1 – Kapengut, Albert – G13 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 c5 6. d5 e6 7. Nf3 exd5 8. cxd5 d6 9. O-O Re8 10. Nd2 Nbd7
1967 POL Team Ch 20th – Round 5 – Drozd, Ryszard – 0-1 – Adamski, Jan – G29 1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. g3 O-O 6. Bg2 d6 7. Nf3 e6 8. O-O exd5 9. cxd5 Re8 10. Nd2 a6
1968 Alma Ata ch-URS – Round 1 – Lein, Anatoly – 1/2-1/2 – Vasiukov, Evgeni – G15 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 c5 6. d5 e6 7. Nf3 exd5 8. cxd5 d6 9. O-O Re8 10. Nd2 a6
1968 Alma Ata ch-URS – Round 13 – Osnos, Viatcheslav – 0-1 – Tal, Mikhail – G116 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 c5 5. d5 O-O 6. Nf3 e6 7. Nc3 exd5 8. cxd5 d6 9. O-O a6 10. a4 Re8
1968 Alma Ata ch-URS – Round 19 – Polugaevsky, Lev – 1/2-1/2 – Tal, Mikhail – G157 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Re8
1969 Belgrade – Round 2 – Ivkov, Borislav – 1-0 – Sahovic, Dragutin – G5 1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. Nf3 O-O 6. g3 d6 7. Bg2 e6 8. O-O exd5 9. cxd5 Re8 10. Nd2 a6
1969 IBM I – Round 5 – Ivkov, Borislav – 1/2-1/2 – Vasiukov, Evgeni – G21 1. d4 Nf6 2. c4 g6 3. g3 c5 4. d5 Bg7 5. Bg2 O-O 6. Nf3 e6 7. Nc3 exd5 8. cxd5 d6 9. O-O a6 10. a4 Re8
1969 Rubinstein Memorial – Round 13 – Ivkov, Borislav – 1/2-1/2 – Adamski, Jan – G57 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 c5 6. d5 e6 7. Nc3 exd5 8. cxd5 d6 9. O-O a6 10. a4 Re8
1969 Vilnius – Round 1 – Butnorius, Algimantas – 0-1 – Nicevski, Risto – G6 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Re8
1972 Skopje ol (Men) fin-A – Round 15 – Lombard, Andre – 0-1 – Jakobsen, Ole – G161 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. Nc3 a6 10. a4 Re8
1973 Leningrad Interzonal – Round 13 – Huebner, Robert – 1-0 – De La Torre Rodriguez, Elizabeth – G39 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 g6 6. Nf3 Bg7 7. g3 O-O 8. Bg2 d6 9. O-O Re8 10. Nd2 Nbd7
1974 Manila – Round 5 – Gheorghiu, Florin – 1-0 – Ljubojevic, Ljubomir – G50 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 g6 6. g3 d6 7. Nf3 Bg7 8. Nd2 Nbd7 9. Bg2 O-O 10. O-O Re8
Bugojno 1984 – Round 1 – Smyslov, Vassily – 1/2-1/2 – Ivanovic, Bozidar – G13 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. g3 Bg7 6. Bg2 O-O 7. Nf3 e6 8. O-O exd5 9. cxd5 a6 10. a4 Re8
Montreal 1979 – Round 4 – Hort, Vlastimil – 1/2-1/2 – Timman, Jan H – G19 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 Nbd7

A64a — Fianchetto

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O Nbd7 10.Nd2 a6 11.a4 Re8

Eval: [+0.25]

Les coups candidats

12.h3 — 54.6% (2019 parties) →

Ambassadeurs : Rawlings, Alan J C (15x), Mikhalevski, Victor (15x), Grammatica, Andrea (11x), Lacrosse, Marc (10x), Birnboim, Nathan (10x), Reefschlaeger, Helmut, Dr. (9x), Jirka, Jiri (9x), Tal, Mikhail (8x)

12.Nc4 — 26.4% (978 parties) →

Ambassadeurs : Arkell, Keith C (24x), Kunsztowicz, Uwe (5x), Psakhis, Lev (5x), Huebner, Robert (5x), Tal, Mikhail (4x), Fier, Alexandr (4x), Kaidanov, Gregory (3x), Unzicker, Wolfgang (3x)

12.a5 — 7.6% (280 parties) →

Ambassadeurs : Ilincic, Zlatko (22x), Grabarczyk, Miroslaw (6x), Nikolic, Predrag (5x), Razuvaev, Yuri S (3x), Rajlich, Iweta (3x), Beilin, Sergey Mikhailovich (3x), Tal, Mikhail (2x), Vladimirov, Yevgeniy (2x)

12.e4 — 4.1% (153 parties)

Ambassadeurs : Burkart, Roland (3x), Slepoy, Yosef (2x), Zilber, Israel (2x), Karlsen, Sverre (2x), Kantorik, Marian (2x), Duque Zilber, Rafael (1x), Rossolimo, Nicolas (1x), Sherwin, James T (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.h3	12.Nc4	12.a5	12.e4
<1800	31	48%	35%	10%	3%
1800-2200	990	53%	29%	6%	5%
2200-2600	2188	57%	25%	7%	3%
2600+	57	67%	12%	19%	2%

Évolution par décennie (% des parties)

Décennie	N parties	12.h3	12.Nc4	12.a5	12.e4
1950s	24	33%	29%	21%	12%
1960s	41	68%	17%	5%	7%
1970s	142	46%	25%	16%	7%
1980s	327	47%	31%	8%	3%
1990s	407	30%	39%	8%	5%
2000s	707	50%	29%	9%	4%
2010s	1775	66%	22%	5%	3%
2020s	275	44%	25%	12%	7%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.h3	66%	44%	▼ -21.2%
12.Nc4	22%	25%	▲ +3.4%
12.a5	5%	12%	▲ +6.3%
12.e4	3%	7%	▲ +4.1%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 10 parties
Ju, Wenjun — 5 parties
Kasparov, Garry — 2 parties
Karpov, Anatoly — 2 parties
Euwe, Max — 1 partie
Smyslov, Vladimir — 1 partie
Karpov, Aleksandr — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

12.h3 — 54.6% (2019 parties)

1955 — Gereben, Erno vs Kluger, Gyula — 0-1 — Budapest HUN
1955 — Donner, H. vs Bianco Esposito, Antonio — 1-0 — Buenos Aires ARG
1955 — Chekhover, Vitaly vs Brazilsky, Y. — 1-0 — Odessa UKR
1956 — Buslaev, Aleksander vs Tal, Mikhail — 1-0 — Tbilisi GEO
1956 — Szabo, Laszlo vs Unzicker, Ferdinand, Dr. — 1-0 — Moscow olm

12.Nc4 — 26.4% (978 parties)

1954 — Stahlberg, Gideon vs Kluger, Carsten — 0-1 — Bucharest ROU
1955 — Toran Albero, Roman vs Esposito, Alfredo — 1/2-1/2 — Buenos Aires (0
1955 — Toran Albero, Roman vs Bianco Esposito, Antonio — 1/2-1/2 — Buenos Aires ARG
1955 — Dodero, Emilio vs Najdorf, Miguel — 0-1 — Mar del Plata ARG
1956 — Geller, Alexander vs Zilber, Israel — 1/2-1/2 — Leningrad RUS

12.a5 — 7.6% (280 parties)

1953 — Euwe, Max vs Kotov Lundqvist, Alex — 1-0 — Zurich SUI
1953 — O'Kelly de Galway, Alberic vs Tolush, Alexander V — 1/2-1/2 — Bucharest ROU
1955 — Shcherbakov, Vitaly vs Vasiukov, Evgeni — 0-1 — Moscow RUS
1955 — Dvorak Santos, Tiago vs Fischl, Kamilla — 1-0 — Prague CZE
1957 — Kikiani, Tamaz vs Buslaev, Aleksander — 1-0 — Tbilisi GEO

12.e4 — 4.1% (153 parties)

1955 — Rossolimo, Nicolas vs Sherwin, James T — 1-0 — Long Beach, CA USA
1956 — Slepoy, Yosef vs Duque Zilber, Rafael — 1/2-1/2 — Leningrad RUS
1956 — Slepoy, Yosef vs Zilber, Israel — 1/2-1/2 — Leningrad RUS
1960 — Zilber, Israel vs Simagin, Vladimir — 0-1 — Moscow RUS
1960 — Silber, Fabian vs Simagin, Konstantin — 0-1 — USSR Tch

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