D57g — QGD: Lasker Defence, Main Line, 11.Qb3 Rd8

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.cxd5 Nxc3 10.bxc3 exd5 11.Qb3 Rd8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité centre (2v1), case forte b4, case forte d4, case forte b5, case forte e5, colonne b.
Faiblesses adverses : Bc8 enfermé.
Problèmes : roi au centre, Bf1 enfermé, arriéré c3, isolé a2, 3 pièces non développées (F1, A1, H1).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Bd3 — Développer Bf1
● h3 — Empêcher ...Bg4
● Rb — Tour sur colonne b

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité aile_dame (3v2), case forte e4, case forte g5, colonne e.
Faiblesses adverses : arriéré c3, isolé a2, Bf1 enfermé, roi blanc au centre.
Problèmes : Bc8 enfermé, 3 pièces non développées (B8, C8, A8).
Plans :
● ...Nbd7 — Développer Nb8
● ...Bg4 — Développer Bc8, clouer Nf3
● ...f6 — Rupture
● ...f5 — Rupture
● ...Re — Tour sur colonne e

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

D57g — Lasker Defence Main Line

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.cxd5 Nxc3 10.bxc3 exd5 11.Qb3 Rd8

Eval: [-0.05]

Les coups candidats

12.c4 — 71.1% (300 parties)

Ambassadeurs : Marciano, David (5x), Nikolic, Predrag (4x), Letelier Martner, Rene (3x), Guimard, Carlos E (3x), Abad Martinez, Diego (2x), Vidmar Milan (2x), Stahlberg, Gideon (2x), Neikirkh, Oleg (2x)

12.Be2 — 12.8% (54 parties)

Ambassadeurs : Pyda, Zbigniew (2x), Raud, Ilmar (1x), Porath, Yosef (1x), Nyren, Bo (1x), Harris, Peter A (1x), Ragozin, Viacheslav (1x), Ravinsky, Grigory (1x), Panno, Oscar (1x)

12.Bd3 — 12.3% (52 parties)

Ambassadeurs : Halldorsson, Bragi (2x), Smith, Andrew Philip (1x), Russell, Robert Jordan (1x), Roos, Michel (1x), Noradounghian, Georges (1x), Arnason, Arni A. (1x), Arnason, Jakob (1x), Holtz, Ernesto Eugenio (1x)

12.a4 — 2.6% (11 parties)

Ambassadeurs : Laznicka, Viktor (2x), Gunina, Valentina (2x), Ivanov, Igor V. (1x), Duchesne, Guy (1x), Anand, Viswanathan (1x), Ikonnikov, Vyacheslav (1x), Hoegy, Kevin (1x), Cvek, Robert (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.c4	12.Be2	12.Bd3	12.a4
<1800	8	50%	—	38%	—
1800-2200	102	62%	18%	20%	—
2200-2600	152	66%	18%	9%	5%
2600+	15	67%	13%	7%	13%

Évolution par décennie (% des parties)

Décennie	N parties	12.c4	12.Be2	12.Bd3	12.a4
1930s	5	80%	20%	—	—
1940s	19	100%	—	—	—
1950s	26	85%	12%	4%	—
1960s	11	91%	—	—	—
1970s	18	83%	—	17%	—
1980s	37	68%	14%	16%	3%
1990s	91	81%	10%	7%	—
2000s	94	68%	15%	16%	—
2010s	109	54%	19%	17%	8%
2020s	12	67%	8%	17%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.c4	54%	67%	▲ +12.5%
12.Be2	19%	8%	▼ -10.9%
12.Bd3	17%	17%	▼ -0.8%
12.a4	8%	8%	+0.1%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 3 parties
Kramnik, Vladimir — 2 parties
Anand, Viswanathan — 2 parties

Parties historiques

12.c4 — 71.1% (300 parties)

1938 — Vidmar Milan vs Vidmar Milan — 1/2-1/2 — Ljubljana
1939 — Eliskases, Erich vs Vidmar, Marjeta — 1/2-1/2 — Stuttgart GER
1939 — Staahlberg, Gideon vs Piazzini, Luis Roberto — 1-0 — Buenos Aires ARG
1939 — Vinuesa, Juan vs Cristia, Jose Maria — 0-1 — Rosario ARG
1940 — De Souza Mendes, Joao vs Caetano Netto, Joaquim Gentil — 1/2-1/2 — Rio de Janeiro BRA

12.Be2 — 12.8% (54 parties)

1939 — Raud, Ilmar vs Porath, Yosef — 0-1 — Buenos Aires ol pr-D
1951 — Nyren, Bo vs Harris, Peter A — 1-0 — Birmingham/Coventry
1952 — Ragozin, Viacheslav vs Ravinsky, Grigory — 1/2-1/2 — Riga LAT
1955 — Panno, Oscar vs Letelier Martner, Rene — 1-0 — Mar del Plata ARG
1981 — Lombardy, William J vs Benko, Pal — 1/2-1/2 — Lone Pine open

12.Bd3 — 12.3% (52 parties)

1951 — Smith, Andrew Philip vs Russell, Robert Jordan — 1-0 — Sacramento
1973 — Holtz, Ernesto Eugenio vs Borque Ruiz, Oscar — 0-1 — CADAP I-F-72 APA.IV.23/2*
1977 — Roos, Michel vs Noradounghian, Georges — 1/2-1/2 — Le Touquet
1977 — Chaos Fraiz, Jose Manuel vs Blitz, Max — 1-0 — Seattle, WA USA
1980 — Burnett, Jim vs Houston, David — 1-0 — Brighton ch-BCF

12.a4 — 2.6% (11 parties)

1980 — Ivanov, Igor V. vs Duchesne, Guy — 1-0 — Montreal CAN
2011 — Ikonnikov, Vyacheslav vs Hoegy, Kevin — 1-0 — Leinzell GER
2014 — Laznicka, Viktor vs Anand, Viswanathan — 1/2-1/2 — Dubai UAE
2015 — Cvek, Robert vs Caletka, Radomir — 1/2-1/2 — Czech Republic CZE
2015 — Gunina, Valentina vs Kriebel, Tadeas — 1/2-1/2 — Novy Bor CZE

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	● a2	—
Arriérés	● c3	—
Chaînes	● f2→e3, c3→d4, e3→d4	● g7→h6
Passés	—	—
Majorité	● centre 2v1	● aile_dame 3v2

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b4 (2v1), ● d4 (3v0), ● b5 (2v0), ● e5 (2v1)	● e4 (2v0), ● g5 (2v1)
Cases faibles	—	—
Centre	● d4 (3v0), ● e5 (2v1)	● e4 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	● e

Pièces

	♔ Blancs	♚ Noirs
Bf1	● Bf1 Non développé (mob. 5)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	Non	Non
Clouages	● pawn e3	—
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	● c3-c4, ● e3-e4	● …f7-f6, ● …f7-f5

Partie
1938 Ljubljana – Round 1 – Vidmar Milan – 1/2-1/2 – Vidmar Milan – G2 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1939 Stuttgart – Round 6 – Eliskases, Erich – 1/2-1/2 – Vidmar, Marjeta – G32 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1941 Buenos Aires Circulo – Round 5 – Stahlberg, Gideon – 1-0 – Czerniak, Moshe – G16 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nc3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1941 Buenos Aires Circulo – Round 8 – Stahlberg, Gideon – 1-0 – Frydman, Paulino – G27 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1945 Buenos Aires Circulo – Round 12 – Najdorf, Miguel – 1-0 – Hand, Cameron R – G42 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1945 Novi Sad – Round 1 – Neikirkh, Oleg – 1/2-1/2 – Tsvetkov, Alexandar K – G15 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1945 Quilmes – Round 4 – Letelier Martner, Rene – 1-0 – Dodero, Emilio – G20 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1946 Mar del Plata – Round 1 – Letelier Martner, Rene – 1/2-1/2 – Reinhardt, Enrique – G7 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1947 Mar del Plata – Round 17 – Maderna, Carlos – 1/2-1/2 – Pizzi Possi, Tulio – G146 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. e3 O-O 6. Nc3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1949 URS Ch, semi final – Round 12 – Sokolsky, Alexey – 1/2-1/2 – Ratner, Boris – G88 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1950 Sorrento ch ITA – Round 9 – Castaldi, Vincenzo – 1-0 – Nestler, Vincenzo – G20 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1952 ITA-ch15 – Round 6 – Scafarelli, Francesco – 1-0 – Norcia, Federico – G30 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1952 La Habana – Round 14 – Reshevsky, Samuel – 1-0 – Horowitz, Albert Israel – G7 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1952 URS ch sf – Round 13 – Koblencs, Alexander – 1/2-1/2 – Ravinsky, Grigory – G80 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1952 URS ch sf – Round 3 – Ragozin, Viacheslav – 1/2-1/2 – Ravinsky, Grigory – G14 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. Qb3 Nxc3 10. bxc3 Rd8
1953 GDR Ch Jena GER – Round 5 – Uhlmann, Wolfgang – 1-0 – Schlieder, Rolf – G9 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1953 Mar del Plata – Round 1 – Guimard, Carlos E – 1/2-1/2 – Letelier Martner, Rene – G5 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nc3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1953 POL-ch11 – Round 1 – Szapiel, Henryk – 1/2-1/2 – Witkowski, Stefan – G1 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Be7 5. e3 O-O 6. Nc3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1954 DDR Ch 05th – Round 14 – Uhlmann, Wolfgang – 1/2-1/2 – Kuebart, Erich – G73 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1955 Argentina – Round 1 – Najdorf, Miguel – 1-0 – Guimard, Carlos E – G2 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1955 Mar del Plata – Round 7 – Panno, Oscar – 1-0 – Letelier Martner, Rene – G51 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1957 Hastings5758 – Round 1 – Gligorić, Svetozar – 1-0 – Keres, Paul – G4 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1960 Buenos Aires – Round 8 – Ivkov, Borislav – 1-0 – Wexler, Bernardo – G90 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Be7 5. Nc3 d5 6. Bg5 O-O 7. e3 h6 8. Bh4 Ne4 9. Bxe7 Qxe7 10. cxd5 Nxc3
1960 Stockholm SWE – Round 1 – Uhlmann, Wolfgang – 1/2-1/2 – Book, Eero – G4 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1960 Varna Varna BUL – Round 13 – Padevsky, Nikola – 1/2-1/2 – Neikirkh, Oleg – G49 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1961 URS-ch28 – Round ? – Borisenko, Georgy K – 1-0 – Tarasov, Vitaly – G5 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1962 URS-ch30 – Round ? – Korelov, Alexander P – 0-1 – Kholmov, Ratmir D – G8 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1964 Reggio Emilia ITA – Round 9 – Bilek, Istvan – 1-0 – Paoli, Enrico – G29 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1966 Panamerican – Round ? – Garcia Martinez, Silvino – 1/2-1/2 – Santa Cruz Beneito, Hugo – G60 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
1968 Buenos Aires – Round 7 – Ocampo, Raul – 1-0 – Incutto, Carlos – G35 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
3. Pearl Spring 2010 – Round 3 – Topalov, Veselin – 0-1 – Anand, Viswanathan – G6 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
34. ECC Open 2018 – Round 7.3 – Laznicka, Viktor – 1-0 – Abasov, Nijat – G213 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. Nf3 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5
Interpolis 1984 – Round 1 – Ljubojevic, Ljubomir – 1/2-1/2 – Andersson, Ulf 1949 – G18 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5

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