A78b — Benoni: Classical, Main Line, 10.Nd2 Na6 11.f4

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f4 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité centre (2v1), case forte c4, case forte b5, case forte d5, Be2 actif, paire de fous, colonne c.
Faiblesses adverses : arriérés d6, f7, Bc8 enfermé.
Problèmes : Bc1 enfermé.
Plans :
● Bg5 — Clouer Nf6
● Rc — Tour sur colonne c

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité aile_dame (3v2), case forte b4, case forte g4, case forte c5, paire de fous, colonne e.
Faiblesses adverses : Bc1 enfermé.
Problèmes : Bc8 enfermé, arriérés d6, f7.
Plans :
● ...Bf5 — Développer Bc8
● ...c4 — Rupture
● ...Re — Tour sur colonne e

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A78b — Classical Main Line

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f4

Eval: [+0.02]

Les coups candidats

11…Nc7 — 70.9% (358 parties) →

Ambassadeurs : Tytgat, Karel (6x), Hage, Henk H (4x), Weissel, Georg (4x), Magrin, Antonio (4x), Peddie Ian A (4x), Evans, Larry (3x), Segal, Alexandru Sorin (3x), Ramos Barraso, Manuel (3x)

11…Rb8 — 19.2% (97 parties)

Ambassadeurs : Portisch, Lajos (3x), Ouellet, Maili-Jade (3x), Dely, Peter (2x), Malich, Burkhard, Dr. (2x), Bobotsov, Milko G (2x), Zaitsev, Alexander (2x), Chiku-Ratte, Olivier-Kenta (2x), Rejfir, Josef (1x)

11…c4 — 6.3% (32 parties)

Ambassadeurs : Padevsky, Nikola (2x), Lain, Luigi (2x), Bonafede, Alessandro (2x), Peev, Peicho (1x), Umansky, Vladimir (1x), Lipman, Vladimir (1x), Simon Cobo, Enrique (1x), Bilek, Istvan (1x)

11…Bd7 — 2.4% (12 parties)

Ambassadeurs : Westerinen, Heikki M.J. (1x), Tringov, Georgi P (1x), Agudelo Guevara, Mariana (1x), Kitagami, Show (1x), Yepes Martinez, Eduard (1x), Gabaldon Gomez, Miguel Angel (1x), Ivanov, Pavel (1x), Hendriks, Marrien (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	11…Nc7	11…Rb8	11…c4	11…Bd7
<1800	10	60%	20%	10%	10%
1800-2200	168	73%	17%	3%	5%
2200-2600	186	70%	18%	11%	1%
2600+	3	33%	67%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	11…Nc7	11…Rb8	11…c4	11…Bd7
1920s	1	100%	—	—	—
1950s	9	33%	67%	—	—
1960s	46	54%	39%	2%	2%
1970s	18	83%	6%	11%	—
1980s	42	64%	26%	10%	—
1990s	136	79%	12%	7%	1%
2000s	124	75%	17%	5%	3%
2010s	115	68%	19%	4%	5%
2020s	14	57%	14%	29%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
11…Nc7	68%	57%	▼ -10.7%
11…Rb8	19%	14%	▼ -4.8%
11…c4	4%	29%	▲ +24.2%
11…Bd7	5%	0%	▼ -5.2%

Parties historiques

11…Nc7 — 70.9% (358 parties)

1925 — Van den Bosch, Johannes vs Schelfhout, Willem — 1-0 — Amsterdam tt
1954 — Golovko, Nikolay Grigorievic vs Pasman Marks — 0-1 — Riga LAT
1954 — Khavin, Abram Leonidovich vs Zveriaka — 1-0 — Kiev UKR
1958 — Vukcevich, Milan vs Bogdanovic, Rajko — 1/2-1/2 — Sarajevo BIH
1960 — Baranow, Filip vs Wilup — 1/2-1/2 — Leningrad RUS

11…Rb8 — 19.2% (97 parties)

1955 — Portisch, Lajos vs Dely, Peter — 1-0 — Hungary ch
1955 — Portisch, Lajos vs Dely, Peter — 1-0 — Budapest HUN
1956 — Chimenez vs Thorbergsson, Freysteinn — 1/2-1/2 — Moscow RUS
1957 — Golz, Werner vs Malich, Burkhard, Dr. — 0-1 — Gotha GER
1959 — Burger, Hein vs Bobotsov, Milko G — 0-1 — Hastings ENG

11…c4 — 6.3% (32 parties)

1968 — Padevsky, Nikola vs Peev, Peicho — 1-0 — Varna BUL
1970 — Padevsky, Nikola vs Planinec, Albin — 1/2-1/2 — Sarajevo BIH
1971 — Simon Cobo, Enrique vs Bilek, Istvan — 1-0 — Havana CUB
1981 — Sahovic, Dragutin vs Rogulj, Branko — 0-1 — Pula CRO
1983 — Hvenekilde, Jorgen vs Horvath, Tamas — 0-1 — Copenhagen DEN

11…Bd7 — 2.4% (12 parties)

1964 — Westerinen, Heikki M.J. vs Tringov, Georgi P — 1/2-1/2 — Tel Aviv ISR
1991 — Agudelo Guevara, Mariana vs Kitagami, Show — 1-0 — Los Angeles, CA USA
2003 — Yepes Martinez, Eduard vs Gabaldon Gomez, Miguel Angel — 1/2-1/2 — Benidorm ESP
2007 — Perez Fernandez, Jose Vicente vs Rosa Ramirez, Victor D. — 0-1 — ICCF
2008 — Ivanov, Pavel vs Hendriks, Marrien — 1/2-1/2 — IECC

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● d6, ● f7
Chaînes	● e4→d5	● d6→c5, f7→g6, h7→g6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● c4 (2v0), ● b5 (2v0), ● d5 (2v1)	● b4 (2v0), ● g4 (2v1), ● c5 (2v0)
Cases faibles	● e4	—
Centre	● d5 (2v1)	● d4 (1v0), ● e5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Be2	● Be2 Actif (mob. 7)
Bg7		● Bg7 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 5)
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	● e4-e5, ● f4-f5	● …c5-c4

Partie
1955 HUN Ch 11th – Round ? – Portisch, Lajos – 1-0 – Dely, Peter – G4 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Nf3 O-O 9. Be2 Re8 10. Nd2 Na6
1955 Hungary Ch – Round 1 – Portisch, Lajos – 1-0 – Dely, Peter – G15 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6
1956 Moscow – Round 1 – Chimenez – 1/2-1/2 – Thorbergsson, Freysteinn – G3 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6
1957 It – Round 1 – Golz, Werner – 0-1 – Malich, Burkhard, Dr. – G1 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Be2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 Na6
1959 Hastings5960 – Round 6 – Burger, Hein – 0-1 – Bobotsov, Milko G – G26 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Be2 Bg7 8. Nf3 O-O 9. Nd2 Re8 10. O-O Na6
1960 Leipzig olm prel – Round 2 – Garces, Napoleon – 0-1 – Rossolimo, Nicolas – G49 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6
1960 Sofia ch BUL – Round 7 – Dimitrov, Krastjo – 1-0 – Bobotsov, Milko G – G7 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Be2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 Na6
1962 Sarajevo – Round 8 – Rejfir, Josef – 0-1 – Portisch, Lajos – G44 1. c4 Nf6 2. d4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Be2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 Na6
1962 URS-ch30 – Round ? – Zaitsev, Alexander – 1/2-1/2 – Suetin, Alexey S – G9 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. Nd2 Na6
1963 USSR ch-06 6364 – Round ? – Zaitsev, Alexander – 1-0 – Altshuler, Roman Zinovievich – G4 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. Nd2 Na6
1964 Buenos Aires – Round 9 – Rubinetti, Jorge – 0-1 – Garcia Rodriguez, Raimundo – G80 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O 7. Be2 e6 8. O-O exd5 9. cxd5 Re8 10. Nd2 Na6
1964 Sarajevo 7th – Round 9 – Gufeld, Eduard – 1/2-1/2 – Gojak, Ilija – G12 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Be2 c5 7. d5 e6 8. Nf3 exd5 9. cxd5 Re8 10. Nd2 Na6
1964 Tel Aviv olm prel – Round 6 – Westerinen, Heikki M.J. – 1/2-1/2 – Tringov, Georgi P – G215 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O 7. Be2 e6 8. O-O exd5 9. cxd5 Re8 10. Nd2 Na6
1965 Bognor Regis-A – Round 1 – Parr, Frank – 1-0 – Denman, Brian – G7 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6
1967 Harrachov – Round 1.2 – Segal, Alexandru Sorin – 1/2-1/2 – Verber Lugo, Ricardo – G121 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. f4 c5 7. d5 e6 8. Nf3 exd5 9. cxd5 Re8 10. Nd2 Na6
1967 URS-ch35 – Round 1 – Siniavsky, Alexande – 0-1 – Kholmov, Ratmir D – G29 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. Be2 Bg7 8. Nf3 O-O 9. O-O Re8 10. Nd2 Na6
1968 Varna – Round 1 – Padevsky, Nikola – 1-0 – Peev, Peicho – G4 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. Nd2 Na6

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