A65s — Benoni: Saemisch, 8.Bg5 h6 9.Be3 O-O 10.Nge2

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 Bg7 8.Bg5 h6 9.Be3 O-O 10.Nge2 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. a4 (36 % des parties) ; Qd2 (Prépare O-O-O — 30 % des parties) ; Ng3 (25 % des parties) ; Nc1 (6 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...a6 (Préparer expansion aile dame — 42 % des parties) ; ...Nbd7 (Développer b8 — 30 % des parties) ; ...Re8 (Tour sur colonne semi-ouverte e — 10 % des parties) ; ...b6 (Préparer le fianchetto — 6 % des parties) ; ...Na6 (Développer b8 — 6 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● g2→f3, f3→e4, e4→d5	● d6→c5, f7→g6
Passés	—	—
Majorité	—	● aile dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● f4 (2v0)	—
Cases faibles	—	● d5
Centre	● d4 (3v1), ● d5 (3v1), ● e4 (2v1)	● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● c	● e

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 0)
Be3	● Be3 Actif (mob. 9)
Bg7		● Bg7 Mauvais (mob. 1)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● f1, ● a1, ● h1)	3 (● b8, ● c8, ● a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre	● Roqué
Droits de roque	O-O / O-O-O	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● e4-e5	—

Partie
1961 Zevenaar – Round 14 – Beni, Alfred – 1-0 – Lehmann, Heinz – G92 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 c5 7. d5 e6 8. Bg5 h6 9. Be3 exd5 10. cxd5 Nbd7
1963 Piatigorsky Cup – Round 9 – Petrosian, Tigran V – 1-0 – Gligorić, Svetozar – G17 1. c4 g6 2. d4 Nf6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 c5 7. d5 e6 8. Bg5 h6 9. Be3 exd5 10. cxd5 b6
1966 Rio Hondo zt – Round 5 – Miranda, Marcio Marcos do Carmo – 0-1 – Rubinetti, Jorge – G25 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. f3 O-O 6. Nge2 c5 7. d5 e6 8. Bg5 h6 9. Be3 exd5 10. cxd5 Re8
7. World Team Championship 2010 – Round 7 – Postny, Evgeny – 1/2-1/2 – Can, Ecrin Azra – G110 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 c5 7. d5 e6 8. Bg5 h6 9. Be3 exd5 10. cxd5 Nbd7
World Blitz 2018 – Round 11.16 – Korobov, Anton – 1-0 – Kazhgaleyev, Murtas – G636 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 c5 7. d5 e6 8. Bg5 h6 9. Be3 exd5 10. cxd5 Re8

A65s — Saemisch (1961)

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f3 Bg7 8.Bg5 h6 9.Be3 O-O 10.Nge2

Les coups candidats

10…a6 — 41.6% (114 parties)

Ambassadeurs : Ehlvest, Jaan (3x), Psakhis, Lev (2x), Markus, Robert (2x), Vukic, Milan (2x), Blanco Fernandez, Alvaro (2x), Lorscheid, Gerhard (2x), Videki, Sandor (2x), Kotronias, Vasilios (2x)

10…Nbd7 — 29.9% (82 parties)

Ambassadeurs : Rajkovic, Dusan (6x), Cebalo, Miso (3x), Thipsay, Praveen M (3x), Kelecevic, Nedeljko (3x), Babu, N Sudhakar (3x), Ehlvest, Jaan (2x), Fuster, Geza (1x), Lipnowski, Irwin (1x)

10…Re8 — 9.9% (27 parties)

Ambassadeurs : Widmann, Kurt (3x), Jakobsen, Ole (2x), Brinck-Claussen, Bjorn (2x), OBrien, Erik Michael (2x), Giulian, Philip M (2x), Miranda, Marcio Marcos do Carmo (1x), Rubinetti, Jorge (1x), Svenn, Gosta (1x)

10…b6 — 6.2% (17 parties)

Ambassadeurs : Petrosian, Tigran V. (2x), Gligoric, Svetozar (2x), Gheorghiu, Florin (1x), Pavlov, Mircea-Sergiu-Aurelian (1x), Nickel, Ruediger (1x), Popehy (1x), Romsdal, Trond (1x), Theting, Helge E (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…a6	10…Nbd7	10…Re8	10…b6
<1800	2	50%	—	—	—
1800-2200	53	47%	30%	2%	6%
2200-2600	188	42%	32%	10%	5%
2600+	7	43%	29%	14%	—

Évolution par décennie (% des parties)

Décennie	N parties	10…a6	10…Nbd7	10…Re8	10…b6
1950s	1	100%	—	—	—
1960s	6	17%	33%	17%	33%
1970s	2	—	50%	—	50%
1980s	47	28%	30%	4%	17%
1990s	69	36%	32%	16%	3%
2000s	72	54%	22%	11%	4%
2010s	58	41%	38%	5%	2%
2020s	19	58%	26%	11%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…a6	41%	58%	▲ +16.5%
10…Nbd7	38%	26%	▼ -11.6%
10…Re8	5%	11%	▲ +5.4%
10…b6	2%	0%	▼ -1.7%

Parties historiques

10…a6 — 41.6% (114 parties)

1957 — Olafsson, Thorir vs Palmqvist, Ulf — 1-0 — Reykjavik ISL
1961 — Beni, Alfred vs Lehmann, Heinz — 1-0 — Zevenaar
1981 — Kuligowski, Adam vs Saeed, Nasser A — 1-0 — Graz WTch jr
1984 — Psakhis, Lev vs Ehlvest, Jaan — 1-0 — Sverdlovsk i
1984 — Ehlvest, Jaan vs Mortensen, Erling — 1/2-1/2 — Leningrad Kotov-mem

10…Nbd7 — 29.9% (82 parties)

1961 — Beni, Alfred vs Lehmann, Heinz — 1-0 — Zevenaar
1963 — Fuster, Geza vs Lipnowski, Irwin — 1/2-1/2 — Canada
1972 — Griffiths, Peter C vs Sugden, John N — 1-0 — ?
1980 — Campos Moreno, Javier B. vs Rantanen, Yrjo A. — 1/2-1/2 — La Valetta
1981 — Tatai, Stefano vs Santolini, Luigi — 1-0 — ITA-ch41 Barcellona PG

10…Re8 — 9.9% (27 parties)

1966 — Miranda, Marcio Marcos do Carmo vs Rubinetti, Jorge — 0-1 — Rio Hondo zt
1984 — Svenn, Gosta vs Lind, Jan-Olov — 0-1 — Linkoping SWE
1984 — Vegh Daniel vs Vrabec, Blaz — 1-0 — Albena
1990 — Ionescu, Constantin vs Vukic, Milan — 1/2-1/2 — Biel op Biel SUI
1990 — OBrien, Erik Michael vs Widmann, Kurt — 0-1 — NATT3-03 9094

10…b6 — 6.2% (17 parties)

1963 — Petrosian, Tigran V. vs Gligoric, Svetozar — 1-0 — Los Angeles, CA USA
1963 — Petrosian, Tigran V. vs Gligoric, Svetozar — 1-0 — Los Angeles Piatigo
1970 — Gheorghiu, Florin vs Pavlov, Mircea-Sergiu-Aurelian — 1/2-1/2 — Bucharest ROU
1980 — Miles, Anthony J vs Morris, Walter — 0-1 — Baerum
1981 — Partos, Charles vs Zueger, Beat — 1/2-1/2 — Biel SUI

1961 Zevenaar – Round 14 – Beni, Alfred – 1-0 – Lehmann, Heinz – G92

1963 Piatigorsky Cup – Round 9 – Petrosian, Tigran V – 1-0 – Gligorić, Svetozar – G17

1966 Rio Hondo zt – Round 5 – Miranda, Marcio Marcos do Carmo – 0-1 – Rubinetti, Jorge – G25

7. World Team Championship 2010 – Round 7 – Postny, Evgeny – 1/2-1/2 – Can, Ecrin Azra – G110

World Blitz 2018 – Round 11.16 – Korobov, Anton – 1-0 – Kazhgaleyev, Murtas – G636