Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● c4→d5, e4→d5	● d6→c5, d6→e5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● g5 (2v0)	● g4 (2v0)
Cases faibles	● d4	● d5
Centre	● d5 (4v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Be2	● Be2 Mauvais (mob. 2)
Be7		● Be7 Mauvais (mob. 0)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● c1, ● 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

A56x — Benoni: Czech, 5.e4 Be7 6.Nf3 O-O 7.Be2

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Nf3 O-O 7.Be2 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. O-O (Mettre le roi en sécurité, connecter les tours — 78 % des parties) ; a3 (Préparer expansion aile dame — 10 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Ne8 (50 % des parties) ; ...Nbd7 (Développer b8 — 33 % des parties) ; ...a6 (Préparer expansion aile dame — 8 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Partie
1938 GBR Ch 31. Major B – Round 6 – Schaechter, Leiser – 0-1 – Seitz, Jakob Adolf – G6 1. d4 c5 2. d5 e5 3. c4 d6 4. Nc3 Nf6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Re8 9. Ne1 Nf8 10. f4 exf4
1957 Mar del Plata – Round 6 – Alonso-Lej De Las Casas, Fernando – 0-1 – Rossetto, Hector – G62 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. Qc2 a6 9. Be3 Nd7 10. O-O g6
1957 Rio de Janeiro zt – Round 1 – Rubio Aguado, Fernando – 0-1 – Engels, Ludwig – G18 1. d4 c5 2. d5 e5 3. c4 d6 4. e4 Nf6 5. Nc3 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Re8 9. a3 b6 10. Re1 Nf8
1958 Hoogovens – Round 7 – Euwe, Max – 1-0 – Milic, Bozidar – G27 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O f5 9. exf5 Bxf5 10. Nd2 Nf6
1962 CSR Ch – Round 13 – Hybl, Jaroslav – 0-1 – Trapl, Jindrich – G109 1. d4 Nf6 2. c4 c5 3. d5 e5 4. e4 d6 5. Nc3 Be7 6. Nf3 O-O 7. Be2 Ne8 8. O-O g6 9. Ne1 Bg5 10. Nd3 Nd7
1962 Spartak Ch – Round 6 – Cherepkov, Alexander V – 0-1 – Sergievsky, Vladimir D – G42 1. d4 c5 2. d5 Nf6 3. c4 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Bg4
1962 Varna olm – Round 4 – Bilek, Istvan – 1/2-1/2 – Hort, Vlastimil – G119 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Nd7
1963 Leipzig Open 6364 2nd – Round 6 – Boehlig, Heinz, Dr. – 0-1 – Pietzsch, Wolfgang – G32 1. d4 c5 2. d5 e5 3. e4 d6 4. c4 Be7 5. Nc3 Nf6 6. Be2 O-O 7. Nf3 Ne8 8. O-O Nd7 9. Ne1 Bg5 10. Nd3 g6
1963 UKR Ch – Round 4 – Nikolaevsky, Yuri V – 1/2-1/2 – Rotstein, Jefim – G26 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O a6 9. a3 Bg4 10. Ne1 Bxe2
1964 Tel Aviv olm fin-B – Round 1 – Uhlmann, Wolfgang – 1-0 – Johannessen, Simon T – G3 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 a6 8. O-O Ne8 9. a3 g6 10. b4 b6
1965 Hastings6566 – Round 3 – Uhlmann, Wolfgang – 1/2-1/2 – Vasiukov, Evgeni – G12 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Nbd7 8. O-O Ne8 9. a3 g6 10. Bh6 Ng7
1965 Mar del Plata – Round 15 – Acosta Garcia, Rafael Isaac – 0-1 – Gheorghiu, Florin – G119 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Bg4
1966 Bucharest – Round 3 – Acosta Garcia, Rafael Isaac – 0-1 – Gheorghiu, Florin – G13 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Nbd7 8. O-O Ne8 9. Qc2 g6 10. Bh6 Ng7
1966 Budapest Ch – Round 6 – Kurtesch Laszlo – 1-0 – Gasztonyi, Endre – G7 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 a6 8. h3 b5 9. cxb5 axb5 10. Bxb5 Qa5
1966 CSR Ch Int – Round 1 – Malich, Burkhard, Dr. – 1/2-1/2 – Jansa, Vlastimil – G1 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O g6 9. Bh6 Ng7 10. a3 Nd7
1966 Harrachov – Round 12 – Pachman, Ludek – 1/2-1/2 – Hort, Vlastimil – G20 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Nd7
1966 Havana olm – Round 1 – Malich, Burkhard, Dr. – 1/2-1/2 – Simon Cobo, Enrique – G11 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. a3 g6 9. Bh6 Ng7 10. h4 f6
1966 La Habana olm fin-A – Round 8 – Malich, Burkhard, Dr. – 1/2-1/2 – Polugaevsky, Lev – G140 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. a3 Nd7 9. O-O g6 10. Bh6 Ng7
1966 La Habana olm prel – Round 1 – Malich, Burkhard, Dr. – 1-0 – Jansa, Vlastimil – G9 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. a3 g6 10. Bh6 Ng7
1966 Reggio Emilia 6667 09th – Round 3 – Bobotsov, Milko G – 1/2-1/2 – Ciocaltea, Victor – G12 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 a6 8. O-O Ne8 9. a3 g6 10. b4 b6
1966 Reykjavik – Round 7 – Halfdanarson, Jon – 0-1 – Wade, Robert G – G34 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. Ne1 Bg5 10. a3 g6
1966 WchTJ U26 fin-A – Round 11 – Whiteley, Andrew Jonathan – 1-0 – Krabbe, Tim – G63 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O g6 9. Ne1 Bg5 10. Bxg5 Qxg5
1966 WchTJ U26 fin-A – Round 5 – Brander, Ilmari – 1/2-1/2 – Jansa, Vlastimil – G24 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. Ne1 Bg5 10. Nd3 Bxc1
1967 Capablanca Memorial – Round 15 – Letelier Martner, Rene – 1/2-1/2 – Jimenez Zerquera, Eleazar – G130 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. O-O Nd7 9. Ne1 Bg5 10. Nd3 Bxc1
1967 Capablanca Memorial – Round 16 – O'Kelly, Albéric de Galway – 1/2-1/2 – Letelier Martner, Rene – G139 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. h3 g6 10. Bh6 Ng7
1967 Capablanca Memorial – Round 18 – Rossetto, Hector – 1-0 – Westerinen, Heikki M.J. – G157 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Nbd7 8. O-O Ne8 9. Qc2 g6 10. Ne1 Bg5
1967 Halle zt – Round 1 – Kristinsson, Jon – 1/2-1/2 – Ciocaltea, Victor – G1 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 a6 8. O-O Nbd7 9. Ne1 Ne8 10. Nd3 Bg5
1967 Hoogovens – Round 6 – Gligorić, Svetozar – 1-0 – Ghitescu, Theodor – G37 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Nd7
1967 Kbenhavnsmesterskabet – Round 6 – Brinck-Claussen, Bjorn – 1/2-1/2 – Sloth, Jorn – G11 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. a3 g6 10. Ne1 Bg5
1967 Vrnjacka Banja zt – Round 8 – Bilyap, Siracettin – 0-1 – Matanovic, Aleksandar – G50 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. a3 g6 10. b4 Ng7
1968 Chacabuco – Round 3 – Garello, Titouan – 0-1 – Rubinetti, Jorge – G8 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O a6 9. a4 Ne8 10. Rb1 g6
1968 CSR Ch – Round 16 – Kozma, Julius – 1-0 – Plachetka, Jan – G145 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. O-O Nd7 9. a3 g6 10. Bh6 Ng7
1968 Lugano ol (Men) fin-A – Round 1 – Lombardy, William J – 1/2-1/2 – Jansa, Vlastimil – G14 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Nbd7 8. O-O Ne8 9. g3 g6 10. Ne1 Ng7
1968 Lugano olm - Round 1 - Sanguinetti, Ricardo - 1/2-1/2 - Jansa, Vlastimil - G355 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. Ne1 g6 10. Nd3 Bg5
1969 Luhacovice – Round 13 – Kozma, Julius – 1-0 – Jansa, Vlastimil – G92 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. a3 g6 10. Bh6 Ng7
1969 Mar del Plata zt – Round 1 – Panno, Oscar – 1-0 – Mecking, Henrique – G14 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. h4 Na6 9. Be3 Nac7 10. a4 Na6
1969 Raach zt – Round 1 – Uhlmann, Wolfgang – 1-0 – Aulin-Jansson, Joran – G7 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Ne8 8. O-O g6 9. Bh6 Ng7 10. Qd2 Nd7
1969 Rhyl ch-BCF – Round 3 – Littlewood, John E – 0-1 – Green Barry N – G27 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Ne8 8. h4 h6 9. g3 f5 10. exf5 Bxf5
1969 USSR – Round 1 – Savon, Vladimir – 1-0 – Bannik, Anatolij – G13 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. a3 g6 10. Bh6 Ng7
1969 WchT U26 fin-A 16th – Round 3.1 – Bjerre, Troels – 1/2-1/2 – Plachetka, Jan – G17 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. O-O Ne8 9. a3 g6 10. Bh6 Ng7
1971 Hoogovens – Round 1 – Brinck-Claussen, Bjorn – 1/2-1/2 – Jansa, Vlastimil – G61 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 O-O 7. Be2 Nbd7 8. a3 Ne8 9. O-O g6 10. Bh6 Ng7
1971 Moscow – Round ? – Bukhtin, Vladimir S – 1-0 – Ivlev, Valentin – G62 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Be2 O-O 7. Nf3 Na6 8. O-O Nc7 9. a3 b6 10. b4 cxb4

A56x — Czech (1938)

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Nf3 O-O 7.Be2

Les coups candidats

7…Ne8 — 50.5% (398 parties)

Ambassadeurs : Fedder, Steen (4x), Ree, Hans (3x), Bakheet Farag (3x), Hort, Vlastimil (2x), Malich, Burkhard, Dr. (2x), Meyer, Claus Dieter (2x), Plachetka, Jan (2x), Adlin Merlin (2x)

7…Nbd7 — 27.2% (214 parties)

Ambassadeurs : Jansa, Vlastimil (8x), Brinck-Claussen, Bjorn (4x), Kozma, Julius (3x), Norgaard, Jesper (3x), Ost-Hansen, Jacob (3x), Sanguinetti, Ricardo (2x), Gralka, Julian (2x), Bannik, Anatolij (2x)

7…Na6 — 7.6% (60 parties)

Ambassadeurs : Jensen, Camilla Hinge (2x), Woehlert, Lutz (1x), Espig, Lutz (1x), Whiteley, Andrew Jonathan (1x), Ostojic, Vladimir (1x), Murey, Jacob (1x), Lebedev, Boris (1x), Csom, Istvan (1x)

7…a6 — 6.9% (54 parties)

Ambassadeurs : Ciocaltea, Victor (2x), Piket, Marcel (2x), Deze, Anton (2x), Rakic, Tomislav (2x), Blees, Albert (2x), Kurtesch, Laszlo (1x), Gasztonyi, Endre (1x), Bobotsov, Milko G (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…Ne8	7…Nbd7	7…Na6	7…a6
<1800	44	52%	30%	5%	5%
1800-2200	285	51%	25%	10%	8%
2200-2600	333	48%	32%	6%	7%

Évolution par décennie (% des parties)

Décennie	N parties	7…Ne8	7…Nbd7	7…Na6	7…a6
1950s	6	67%	17%	—	—
1960s	66	48%	38%	5%	8%
1970s	48	56%	40%	4%	—
1980s	79	47%	25%	5%	14%
1990s	170	56%	22%	7%	4%
2000s	217	51%	26%	10%	5%
2010s	181	45%	27%	8%	12%
2020s	21	52%	29%	10%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…Ne8	45%	52%	▲ +7.6%
7…Nbd7	27%	29%	▲ +2.1%
7…Na6	8%	10%	▲ +1.2%
7…a6	12%	0%	▼ -11.6%

Parties historiques

7…Ne8 — 50.5% (398 parties)

1957 — Nuzhdin, N vs Golubev, Vladimir — 1-0 — ?
1957 — Rosse, Jack Dennis vs Rosselson, Leon — 0-1 — Bognor Regis
1957 — Casas Perea, Fernando vs Rossetto, Hector — 0-1 — Mar del Plata ARG
1958 — Eken, Max vs Milic, Borislav — 1-0 — Beverwijk NED
1960 — Fraidakis, Pantelis vs Piskov, Kamen — 0-1 — BUL-ch14 Sofia BUL

7…Nbd7 — 27.2% (214 parties)

1957 — Aperador Rubio, Ricardo vs Engels, Ludwig — 0-1 — Rio de Janeiro BRA
1961 — Donner, Jan-Hein vs Langeweg, Kick — 1-0 — The Hague ch-NLD
1964 — Alexander Vivasvaan Chandra vs Bannik, Anatolij — 1-0 — ?
1965 — Uhlmann, Wolfgang vs Vasiukov, Evgeni — 1/2-1/2 — Hastings ENG
1966 — Malich, Burkhard, Dr. vs Jansa, Vlastimil — 1-0 — Havana olm

7…Na6 — 7.6% (60 parties)

1963 — Murey, Jacob vs Lebedev, Boris — 1/2-1/2 — Moscow RUS
1965 — Whiteley, Andrew Jonathan vs Ostojic, Vladimir — 1-0 — EU-ch U20 Groningen NED
1969 — Woehlert, Lutz vs Espig, Lutz — 1-0 — ?
1971 — Bukhtin, Vladimir S vs Ivlev, Valentin — 1-0 — Moscow RUS
1975 — Knaak, Rainer vs Boensch, Uwe — 1-0 — Stralsund GER

7…a6 — 6.9% (54 parties)

1964 — Uhlmann, Wolfgang vs Johannessen, Svein — 1-0 — Tel Aviv olm
1966 — Kurtesch, Laszlo vs Gasztonyi, Endre — 1-0 — Budapest HUN
1966 — Bobotsov, Milko G vs Ciocaltea, Victor — 1/2-1/2 — Reggio Emilia ITA
1967 — Kristinsson, Jon vs Ciocaltea, Victor — 1/2-1/2 — Halle GER
1967 — Aradi, Virag vs Szekely, Sandor — 0-1 — Hungary CCC-8

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