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

abcdefgh

Avantages : case forte b5, case forte d5, case forte g5, paire de fous.
Faiblesses adverses : arriéré d6, Be7 enfermé, Bc8 enfermé.
Problèmes : roi au centre, Bc1 enfermé, Be2 enfermé, 3 pièces non développées (C1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte g4, paire de fous.
Faiblesses adverses : Bc1 enfermé, Be2 enfermé, roi blanc au centre.
Problèmes : Be7 enfermé, Bc8 enfermé, arriéré d6, 3 pièces non développées (B8, C8, A8).
Plans :
● ...Nbd7 — Développer Nb8
● ...Bg4 — Développer Bc8, clouer Nf3

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

A56x — Czech

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

Eval: [+1.18]

Les coups candidats

7…Ne8 — 50.9% (396 parties)

Ambassadeurs : Fedder, Steen (4x), Wlodarczyk, Oskar (4x), Vasicek, Martin (4x), Malich, Burkhard, Dr. (3x), Ivkov, Borislav (3x), Ree, Hans (3x), Kuehn, Stefan (3x), Van der Sterren, Paul (3x)

7…Nbd7 — 26.9% (209 parties)

Ambassadeurs : Jansa, Vlastimil (7x), Brinck-Claussen, Bjorn (4x), Norgaard, Jesper (3x), Ost-Hansen, Jacob (3x), Chuprov, Daniil Al (3x), Gralka, Julian (2x), Bannik, Anatolij (2x), Kozma, Julius (2x)

7…Na6 — 7.5% (58 parties)

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

7…a6 — 6.8% (53 parties)

Ambassadeurs : Ciocaltea, Victor (2x), Deze, Anton (2x), Rakic, Tomislav (2x), Piket, Marcel (2x), Blees, Albert (2x), Elgabry, Mohsen (2x), Kristinsson, Jon (1x), Uhlmann, Wolfgang (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	18	56%	33%	—	—
1800-2200	241	51%	24%	10%	7%
2200-2600	337	49%	30%	6%	7%

Évolution par décennie (% des parties)

Décennie	N parties	7…Ne8	7…Nbd7	7…Na6	7…a6
1930s	1	—	100%	—	—
1950s	7	71%	14%	—	—
1960s	64	50%	36%	5%	8%
1970s	47	55%	40%	4%	—
1980s	80	48%	24%	5%	14%
1990s	169	57%	22%	7%	4%
2000s	217	51%	26%	10%	5%
2010s	179	45%	26%	8%	11%
2020s	14	57%	29%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…Ne8	45%	57%	▲ +11.9%
7…Nbd7	26%	29%	▲ +2.3%
7…Na6	8%	0%	▼ -8.4%
7…a6	11%	0%	▼ -11.2%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 2 parties

Parties historiques

7…Ne8 — 50.9% (396 parties)

1957 — Nuzhdin N vs Golubev, Vladimir — 1-0 — ?
1957 — Alonso-Lej De Las Casas, Fernando vs Rossetto, Hector — 0-1 — Mar del Plata ARG
1957 — Rosse, Jack Dennis vs Rosselson, Leon — 0-1 — Bognor Regis
1958 — Euwe, Max vs Milic, Borislav — 1-0 — Beverwijk NED
1958 — Euwe, Max vs Milic, Bozidar — 1-0 — Beverwijk NED

7…Nbd7 — 26.9% (209 parties)

1938 — Schaechter, Leiser vs Seitz, Jakob Adolf — 0-1 — Brighton, Royal Pavilion
1957 — Rubio Aguado, Fernando vs Engels, Ludwig — 0-1 — Rio de Janeiro BRA
1961 — Donner, Bernd vs Langeweg, Kick — 1-0 — The Hague ch-NLD
1964 — Vaysman, Alexander vs Bannik, Anatolij — 1-0 — ?
1965 — Uhlmann, Wolfgang vs Vasiukov, Evgeni — 1/2-1/2 — Hastings ENG

7…Na6 — 7.5% (58 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 — Wehnert, Lutz vs Espig, Lutz — 1-0 — DDR
1971 — Bukhtin, Vladimir S vs Ivlev, Valentin — 1-0 — Moscow RUS
1975 — Knaak, Rainer vs Boensch, Uwe — 1-0 — Stralsund GER

7…a6 — 6.8% (53 parties)

1964 — Uhlmann, Wolfgang vs Johannessen, Simon T — 1-0 — Tel Aviv ISR
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 — Virag, Ferenc Dr. vs Szekely, Sandor — 0-1 — Hungary CCC-8

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

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Be2	● Be2 Enfermé (mob. 2)
Be7		● Be7 Enfermé (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

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 Kiev ch-URS – Round 1 – Krogius, Nikolai V – 1/2-1/2 – Bannik, Anatolij – G42 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 d6 5. Nc3 Be7 6. e4 O-O 7. Be2 e5 8. O-O Ne8 9. Ne1 Nd7 10. Nd3 Nb6
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
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 ? – Brinck-Claussen, Bjorn – 1/2-1/2 – Jansa, Vlastimil – G60 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 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

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