C91g — Spanish: Closed, Bogoljubow, 10.d5 Na5 11.Bc2 Qc8

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.d4 Bg4 10.d5 Na5 11.Bc2 Qc8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. h3 (Empêcher ...Bg4 — 62 % des parties) ; Nbd2 (Développer b1 — 34 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Bd7 (Fou actif (mobilité 6) — 60 % des parties) ; ...c6 (Renforcer le centre — 36 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	● b2→c3, e4→d5	● a6→b5, d6→e5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v0)	● c4 (2v0), ● g4 (2v0)
Cases faibles	—	● d5
Centre	● d4 (3v1), ● d5 (2v1), ● e4 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bc2	● Bc2 Ok (mob. 3)
Bg4		● Bg4 Actif (mob. 6)
Be7		● Be7 Ok (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	1 (● a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c3-c4	● …c7-c6

Partie
19. European Teams 2013 – Round 3.8 – Andreikin, Dmitry – 1/2-1/2 – Short, Nigel D – G126 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 d6 9. c3 Bg4 10. d5 Na5
22. ECU Club Cup 2006 – Round 2 – Nijboer, Friso – 1/2-1/2 – Navara, David – G30 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 d6 9. c3 Bg4 10. d5 Na5
Amber Rapidplay 2000 – Round 2 – Topalov, Veselin – 1/2-1/2 – Piket, Jeroen – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5
Amber-blindfold 19th 2010 – Round 11 – Gashimov, Vugar – 1/2-1/2 – Svidler, Peter – G32 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 d6 9. c3 Bg4 10. d5 Na5
Biel Interzonal 1993 – Round 8 – Yudasin, Leonid – 1/2-1/2 – Van der Sterren, Paul – G192 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5
Bosna SuperGM 2000 – Round 3 – Movsesian, Sergei – 0-1 – Bacrot, Etienne – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5
FIDE World Cup 2015 – Round 1.2 – Espinosa Veloz, Ermes – 0-1 – Karjakin, Sergey – G113 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5
Linares 14th 1997 – Round 2 – Adams, Michael – 1/2-1/2 – Ivanchuk, Vasyl – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5
Madrid 1994 – Round 3 – Polgar, Judit – 1-0 – Sokolov, Ivan. – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 d6 9. c3 Bg4 10. d5 Na5
Moscow Superblitz 2006 – Round 16 – Grischuk, Alexander – 1-0 – Jakovenko, Dmitry – G48 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d4 d6 9. c3 Bg4 10. d5 Na5
World Blitz 2015 – Round 7.3 – Perunovic, Milos – 1/2-1/2 – Karjakin, Sergey – G424 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. d5 Na5

C91g — Closed, Bogoljubow (1993)

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.d4 Bg4 10.d5 Na5 11.Bc2 Qc8

Les coups candidats

12.h3 — 62.0% (365 parties)

Ambassadeurs : Khalifman, Alexander (8x), Harshini A (8x), Hebden, Mark L (7x), Kamsky, Gata (6x), Calzetta Ruiz, Monica (5x), Vogt, Lothar (4x), Smagin, Sergey (4x), Yemelin, Vasily (4x)

12.Nbd2 — 33.6% (198 parties)

Ambassadeurs : Klundt, Klaus (5x), Negi, Parimarjan (4x), Barron, Michael (4x), Bruzon Batista, Lazaro (3x), Atakisi, Umut (3x), Kosintseva, Tatiana (3x), Shen, Yang (3x), Lupynin, Viacheslav (3x)

12.a4 — 2.2% (13 parties)

Ambassadeurs : Zaitsev, Vladimir Valentinovich (2x), Maki, Veijo (2x), Sande, Oystein (1x), Zagorovsky, Vladimir (1x), Chestnov, Vitaliy A. (1x), Romanishin, Oleg M (1x), Carr, Steven (1x), Toothill, John (1x)

12.b3 — 0.7% (4 parties)

Ambassadeurs : Chirioita (1x), Roque, Pedro M G (1x), Harris Shiraz Warraich (1x), Kothe, Hans-Joachim (1x), Ross, Gavin J. S. (1x), Law, Steve (1x), Takahashi, Mitsuo (1x), Saitou, Atsushi (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.h3	12.Nbd2	12.a4	12.b3
<1800	18	67%	33%	—	—
1800-2200	131	54%	40%	2%	—
2200-2600	350	67%	31%	1%	—
2600+	36	72%	28%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	12.h3	12.Nbd2	12.a4	12.b3
1970s	10	70%	20%	10%	—
1980s	54	63%	28%	7%	2%
1990s	88	73%	20%	5%	1%
2000s	198	55%	41%	1%	—
2010s	199	61%	36%	2%	1%
2020s	40	72%	25%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.h3	61%	72%	▲ +11.2%
12.Nbd2	36%	25%	▼ -10.7%
12.a4	2%	0%	▼ -1.5%
12.b3	1%	0%	▼ -1.0%

Joueurs célèbres

Champions du monde dans cette position

Anand, Viswanathan — 1 partie

Parties historiques

12.h3 — 62.0% (365 parties)

1970 — Gandev, Petar vs Antonov, Vladimir — 0-1 — Varna BUL
1979 — Vogt, Lothar vs Plachetka, Jan — 1-0 — Trencianske Teplice SVK
1979 — Kurajica, Bojan vs Gligoric, Svetozar — 1/2-1/2 — Donji Milanovac
1979 — Wedberg, Tom vs Westerinen, Heikki M.J. — 0-1 — Malmo SWE
1979 — Ligterink, Gert vs Smejkal, Jan — 0-1 — Amsterdam NED

12.Nbd2 — 33.6% (198 parties)

1979 — Sax, Gyula vs Nei, Iivo — 1-0 — Tallinn EST
1979 — ? vs Zatulovskaya, Tatiana — 1/2-1/2 — URS
1980 — Bichsel, Walter vs Morrison, Robert — 1/2-1/2 — Mexico City MEX
1980 — Vesselovsky, Serguei vs Polovodin, Igor A — 0-1 — Krasnoyarsk
1982 — Wessendorf, Thomas, Dr. vs Mannion, Stephen R — 1/2-1/2 — Odenthal Eikamp

12.a4 — 2.2% (13 parties)

1979 — Chestnov, Vitaliy A. vs Romanishin, Oleg M — 1-0 — Tallinn EST
1983 — Zaitsev, Vladimir Valentinovich vs Sande, Oystein — 1-0 — ICCF
1983 — Zaitsev, Vladimir Valentinovich vs Zagorovsky, Vladimir — 1/2-1/2 — ICCF
1985 — Carr, Steven vs Toothill, John — 1-0 — cr.
1987 — Kilian, Ralf vs Krallmann, Matthias — 1/2-1/2 — GER

12.b3 — 0.7% (4 parties)

1983 — Chirioita vs Roque, Pedro M G — 0-1 — ?
1991 — Harris Shiraz Warraich vs Kothe, Hans-Joachim — 0-1 — corr NTC-01
2013 — Ross, Gavin J. S. vs Law, Steve — 0-1 — ICCF
2016 — Takahashi, Mitsuo vs Saitou, Atsushi — 0-1 — ICCF