E97k — King’s Indian: Mar del Plata, Bayonet Attack, 9…a5 10.Ba3 axb4 11.Bxb4 Nd7

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4 a5 10.Ba3 axb4 11.Bxb4 Nd7 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, case forte d5, Bb4 actif, paire de fous, colonne b.
Faiblesses adverses : arriéré f7, Bc8 enfermé.
Problèmes : Be2 enfermé, arriéré c4, isolé a2.
Plans :
● h3 — Empêcher ...Bg4
● Rb — Tour sur colonne b

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte c5, case forte e5, avant-poste c5(C), paire de fous, colonne a.
Faiblesses adverses : arriéré c4, isolé a2, Be2 enfermé.
Problèmes : Bc8 enfermé, arriéré f7.
Plans :
● ...Bg4 — Développer Bc8, clouer Nf3
● ...c6 — Rupture
● ...c5 — Rupture
● ...f6 — Rupture
● ...f5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

E97k — Mar del Plata Bayonet Attack

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4 a5 10.Ba3 axb4 11.Bxb4 Nd7

Eval: [+0.66]

Les coups candidats

12.a4 — 85.6% (982 parties)

Ambassadeurs : Van Wely, Loek (9x), Ulko, Jaroslav (9x), Sokolov, Ivan (8x), Kachiani-Gersinska, Ketino (6x), Schebler, Gerhard (6x), Herzog, Klaus (6x), Surender, Anil (5x), Iskusnyh, Sergei (5x)

12.Nd2 — 8.9% (102 parties)

Ambassadeurs : Voegel, Wolfgang (2x), Rodriguez Lopez, Rafael (2x), Enchev, Evgeni (2x), Etzold Werner (1x), Golz, Werner (1x), Wade, Robert G (1x), Mardle, Denis (1x), Kevitz, Alexander (1x)

12.Ne1 — 2.5% (29 parties)

Ambassadeurs : Cafferty, Bernard (1x), Stephenson Garcia, Hannah Grace (1x), Reshevsky, Samuel (1x), Yanofsky, Daniel Abraham (1x), Piasetski, Leon (1x), Biyiasas, Peter (1x), Fassnacht, Peter (1x), Scherer, Ralf (1x)

12.Qc2 — 0.8% (9 parties)

Ambassadeurs : Bilsel, Sabahaddin (2x), Werner, Stephan (1x), Bonne, Marck (1x), Jobe, Tom (1x), Fernandez Aguado, Juan Luis (1x), Leon Crespo, Gregori (1x), Lorenzi, Matteo (1x), Topel, Zehra (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.a4	12.Nd2	12.Ne1	12.Qc2
<1800	14	71%	21%	7%	—
1800-2200	371	83%	10%	4%	1%
2200-2600	600	90%	8%	1%	0%
2600+	20	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	12.a4	12.Nd2	12.Ne1	12.Qc2
1950s	8	38%	38%	12%	—
1960s	5	60%	—	20%	20%
1970s	4	—	50%	25%	—
1980s	6	67%	33%	—	—
1990s	282	87%	10%	1%	1%
2000s	503	86%	9%	2%	1%
2010s	309	86%	7%	4%	1%
2020s	30	93%	3%	3%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.a4	86%	93%	▲ +7.6%
12.Nd2	7%	3%	▼ -3.5%
12.Ne1	4%	3%	▼ -0.9%
12.Qc2	1%	0%	▼ -0.6%

Joueurs célèbres

Champions du monde dans cette position

Kramnik, Vladimir — 6 parties
Kasparov, Garry — 2 parties
Euwe, Max — 1 partie
Ju, Wenjun — 1 partie
Carlsen, Magnus — 1 partie

Parties historiques

12.a4 — 85.6% (982 parties)

1957 — Bronstein, David I vs Robatsch, Karl — 1/2-1/2 — It Gotha GER
1958 — Van Scheltinga, Theo vs Euwe, Max — 1/2-1/2 — Beverwijk NED
1959 — Fedorovsky, Rafael vs Kampelmacher, M — 1/2-1/2 — Buenos Aires ARG
1961 — Cafferty, Bernard vs Wood, Baruch — 1-0 — ?
1966 — Ulrich Gerhard vs Vainio, Valo — 0-1 — ?

12.Nd2 — 8.9% (102 parties)

1955 — Kevitz, Alexander vs Pinkus, Albert — 1/2-1/2 — New York, NY USA
1959 — Etzold Werner vs Golz, Werner — 0-1 — GDR-ch Leipzig GER
1959 — Wade, Robert G vs Mardle, Denis — 0-1 — Bognor Regis
1972 — Stean, Michael F vs Eley, Brian — 1/2-1/2 — Hastings ENG
1979 — Odendahl, Steven vs Ree, Hans — 0-1 — Lone Pine open

12.Ne1 — 2.5% (29 parties)

1957 — Reshevsky, Samuel vs Yanofsky, Daniel Abraham — 1/2-1/2 — Dallas, TX USA
1961 — Cafferty, Bernard vs Stephenson Garcia, Hannah Grace — 0-1 — ?
1975 — Piasetski, Leon vs Biyiasas, Peter — 0-1 — Calgary ch-CAN zt
1991 — Valve, P vs Krauklis — 1/2-1/2 — ?
1997 — Davila, Carlos vs Minero Pineda, Sergio — 1/2-1/2 — Mexiko

12.Qc2 — 0.8% (9 parties)

1966 — Werner, Stephan vs Bonne, Marck — 1-0 — Detmold GER
1994 — Fernandez Aguado, Juan Luis vs Leon Crespo, Gregori — 1-0 — Barcelona ESP
1998 — Bilsel, Sabahaddin vs Jobe, Tom — 1-0 — IECC
2000 — Bilsel, Sabahaddin vs Lorenzi, Matteo — 0-1 — IECG
2003 — Topel, Zehra vs Khusnutdinov, Rustam — 0-1 — Denizli TUR

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	● a2	—
Arriérés	● c4	● f7
Chaînes	● c4→d5, e4→d5	● d6→e5, c7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (2v0), ● d5 (4v1)	● c5 (2v1), ● e5 (3v1)
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (4v1), ● e4 (1v0)	● e5 (3v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	● a

Pièces

	♔ Blancs	♚ Noirs
Be2	● Be2 Enfermé (mob. 1)
Bb4	● Bb4 Actif (mob. 4)
Bg7		● Bg7 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	1 (a1)	2 (c8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Roqué
Droits de roque	—	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c4-c5	● …c7-c6, ● …c7-c5, ● …f7-f6, ● …f7-f5

Partie
19. Amber Rapid 2010 – Round 8 – Kramnik, Vladimir – 1/2-1/2 – Carlsen, Magnus – G23 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 Nd7
1955 Manhattan CC Ch 5556 – Round 6 – Kevitz, Alexander – 1/2-1/2 – Pinkus, Albert – G28 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
1957 Dallas – Round 1 – Reshevsky, Samuel – 1/2-1/2 – Yanofsky, Daniel Abraham – G21 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
1957 It Gotha GER – Round 5 – Bronstein, David I – 1/2-1/2 – Robatsch, Karl – G12 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 e5 6. Nf3 Nc6 7. d5 Ne7 8. O-O O-O 9. b4 a5 10. Ba3 Nd7
1958 Hoogovens – Round 3 – Van Scheltinga, Theo – 1/2-1/2 – Euwe, Max – G11 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
1959 GDR Ch Leipzig GER – Round 11 – Etzold Werner – 0-1 – Golz, Werner – G49 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
1959 Stevenson Memorial – Round 2 – Wade, Robert G – 0-1 – Mardle, Denis – G8 1. d4 Nf6 2. Nf3 d6 3. c4 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
Amber-blind 6th 1997 – Round 6 – Kramnik, Vladimir – 1-0 – Van Wely, Loek – G26 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
Amber-blindfold 15th 2006 – Round 11 – Van Wely, Loek – 0-1 – Morozevich, Alexander – G16 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
Amber-blindfold 16th 2007 – Round 4 – Van Wely, Loek – 1-0 – Morozevich, Alexander – G9 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
FIDE GP 2002 – Round 1.1 – Lautier, Joel – 1-0 – Novik, Maxim – G1 1. c4 g6 2. e4 Bg7 3. d4 d6 4. Nc3 Nf6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
Hoogovens 1999 – Round 3 – Van Wely, Loek – 1/2-1/2 – Ivanchuk, Vasyl – G15 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 Nd7
Hoogovens Blitz 1999 – Round 7 – Topalov, Veselin – 0-1 – Kasimdzhanov, Rustam – G23 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 e5 6. Be2 O-O 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 Nd7
Hoogovens Blitz 1999 – Round 7 – Topalov, Veselin – 0-1 – Kasimdzhanov, Rustam – G24 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 e5 6. Be2 O-O 7. O-O Nc6 8. b4 Ne7 9. d5 a5 10. Ba3 Nd7
It, Dortmund GER 1997 – Round 8 – Kramnik, Vladimir – 1/2-1/2 – Topalov, Veselin – G8 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
Kosmos m 5' 1998 – Round 6 – Kramnik, Vladimir – 1-0 – Kasparov, Garry – G6 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4
Las Palmas 1996 – Round 2 – Kramnik, Vladimir – 1/2-1/2 – Topalov, Veselin – G2 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4

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