C93h — Spanish: Closed, Smyslov, 10.d4 Re8 11.Nbd2 Bf8

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.h3 h6 10.d4 Re8 11.Nbd2 Bf8 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte e4, case forte d5, Bb3 actif, paire de fous.
Faiblesses adverses : arriéré c7, Bc8 enfermé, Bf8 enfermé.
Problèmes : Bc1 enfermé.
Plans :
● Bg5 — Clouer Nf6
● Bc2 — Anticiper ...Na5

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : Bc8 enfermé, Bf8 enfermé, arriéré c7, 3 pièces non développées (C8, F8, A8).
Plans :
● ...Bg4 — Développer Bc8, clouer Nf3
● ...Be7 — Développer Bf8
● ...Na5 — Attaquer Bb3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C93h — Closed Smyslov

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.h3 h6 10.d4 Re8 11.Nbd2 Bf8

Eval: [+0.52]

Les coups candidats

12.Nf1 — 71.4% (1748 parties) →

Ambassadeurs : Flecher, Joseph (79x), Geller, Efim P. (33x), Gligorić, Svetozar (25x), Gligoric, Svetozar (24x), ? (23x), Matanovic, Aleksandar (20x), Wiker, Bo (16x), Tal, Mikhail (15x)

12.Bc2 — 12.3% (301 parties) →

Ambassadeurs : De Coverly, Roger D (9x), Djuric, Stefan (9x), Geller, Efim P. (6x), Balashov, Yuri (5x), Haag, Ervin (4x), Bagusis, Vytas (4x), Zalys, Ignas (4x), Cuijpers, Frans Andre (3x)

12.a4 — 6.0% (148 parties)

Ambassadeurs : Flecher, Joseph (3x), Azarov, Sergei (3x), Tukmakov, Vladimir B (2x), Padevsky, Nikola (2x), Gligoric, Svetozar (2x), Tiemann, Hagen (2x), Sznapik, Aleksander (2x), Djuric, Stefan (2x)

12.a3 — 6.0% (146 parties) →

Ambassadeurs : Byrne, Ray (4x), Parma, Bruno (3x), Hecht, Hans-Joachim (3x), Matanovic, Aleksandar (3x), Perkins, Alan H (3x), Medina-Garcia, Antonio (3x), Balashov, Yuri (3x), Augustin, Josef (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.Nf1	12.Bc2	12.a4	12.a3
<1800	31	81%	10%	—	—
1800-2200	514	73%	13%	6%	3%
2200-2600	875	68%	14%	7%	7%
2600+	39	85%	15%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	12.Nf1	12.Bc2	12.a4	12.a3
1940s	1	—	—	—	—
1960s	364	70%	11%	4%	12%
1970s	354	82%	10%	1%	5%
1980s	202	54%	23%	9%	9%
1990s	445	65%	12%	11%	7%
2000s	461	70%	14%	7%	3%
2010s	537	80%	9%	4%	3%
2020s	85	69%	12%	6%	11%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.Nf1	80%	69%	▼ -10.1%
12.Bc2	9%	12%	▲ +2.3%
12.a4	4%	6%	▲ +1.6%
12.a3	3%	11%	▲ +7.2%

Joueurs célèbres

Champions du monde dans cette position

Tal, Mikhail — 10 parties
Karpov, Anatoly — 4 parties
Smyslov, Vladimir — 3 parties
Karpov, Aleksandr — 2 parties
Kasparov, Garry — 2 parties

Parties historiques

12.Nf1 — 71.4% (1748 parties)

1961 — Tal, Mikhail vs Smyslov, Vasily — 1/2-1/2 — Baku Ch URS
1961 — Jansa, Vlastimil vs Spassky, Boris Vasily — 1/2-1/2 — It Central Chess Club, Moscow
1961 — Tal, Mikhail vs Smyslov, Vasily — 1/2-1/2 — Baku AZE
1962 — Portisch, Lajos vs Bilek, Istvan — 1/2-1/2 — Stockholm SWE
1962 — Unzicker, Wolfgang vs Filip, Miroslav — 1/2-1/2 — Varna BUL

12.Bc2 — 12.3% (301 parties)

1961 — Ajanski, Jordan S vs Filchev, Rusko — 0-1 — Sofia BUL
1962 — Savon, Vladimir vs Krogius, Nikolai V — 1/2-1/2 — Erevan ch-URS
1962 — Bannik, Anatolij vs Zilber, Israel — 1/2-1/2 — Leningrad RUS
1962 — Keres, Paul Petrovich vs Blatny, Frantisek — 1-0 — Varna BUL
1963 — Filep, Tibor vs Portisch, Lajos — 1/2-1/2 — Budapest HUN

12.a4 — 6.0% (148 parties)

1962 — Geller, Efim P. vs Matanovic, Aleksandar — 1-0 — 15th Olympiad final A
1963 — Kovacs H., Zoltan vs Filep, Tibor — 1/2-1/2 — Budapest ch-HUN
1965 — Cotta, Eduardo vs De Freitas, Marcio Elisio — 1/2-1/2 — Rio de Janeiro BRA
1965 — Padevsky, Nikola vs Gligoric, Svetozar — 1-0 — Zagreb CRO
1965 — Andreassen, Einar vs De Lange, Daan — 1/2-1/2 — ?

12.a3 — 6.0% (146 parties)

1963 — Sakharov, Yuri N vs Shianovsky, Vladislav I — 0-1 — Kiev UKR
1964 — Suetin, Alexey S vs Spassky, Boris V. — 1/2-1/2 — Moskou zt
1965 — Fuchs, Reinhart vs Antoshin, Vladimir S — 1/2-1/2 — Leipzig GER
1965 — Zakharov, Yuri Vasilievich vs Klovans, Janis — 1-0 — Omsk RUS
1965 — Lambshire, Michael V vs Carmel, Ephraim — 1/2-1/2 — Sinaia

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● c7
Chaînes	● b2→c3, g2→h3, c3→d4	● a6→b5, d6→e5, c7→d6, g7→h6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● d5 (2v1)	—
Cases faibles	—	—
Centre	● d5 (2v1), ● e4 (2v1)	● e5 (3v2)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb3	● Bb3 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 6)
Bf8		● Bf8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Clouages	—	● pawn f7
Non développées	2 (c1, a1)	3 (c8, f8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c3-c4, ● d4-d5	● …d6-d5

Partie
1962 Capablanca Memorial – Round 12 – Gligoric, Svetozar – 1/2-1/2 – Spassky, Boris Vasily – G123 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. h3 h6 10. d4 Re8
1962 Capablanca Memorial – Round 7 – Matanovic, Aleksandar – 1/2-1/2 – Pachman, Ludek – G67 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. h3 h6 10. d4 Re8
1962 Olympiad, Varna BUL – Round 1 – Tringov, Georgi P – 1/2-1/2 – Padevsky, Nikola – G4 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. h3 h6 10. d4 Re8
1962 Stockholm Interzonal – Round 21 – Gligorić, Svetozar – 1/2-1/2 – Korchnoi, Viktor – G189 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. h3 h6 10. d4 Re8
1962 URS-JUG – Round 2 – Parma, Bruno – 1/2-1/2 – Kholmov, Ratmir D – G13 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. h3 h6 10. d4 Re8
1964 Baku Baku AZE – Round ? – Listergarten, Leonid B – 1/2-1/2 – Lilienthal, Andor – G8 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. h3 h6 10. d4 Re8
1964 Magdeburg ch DDR – Round 17 – Liebert, Heinz – 1/2-1/2 – Malich, Burkhard, Dr. – G41 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. h3 h6 10. d4 Re8
1965 BRA Ch 32th – Round 1 – Cotta, Eduardo – 1/2-1/2 – De Freitas, Marcio Elisio – G3 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. h3 h6 10. d4 Re8
1965 Hamburg etc – Round 1 – Hartoch, Robert G – 1/2-1/2 – Fahnenschmidt, Gerhard – G43 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. h3 h6 10. d4 Re8
1968 Cardenas – Round 1 – Alvarez del Monte, Jose – 1/2-1/2 – Cobo, Eldis – G20 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. h3 h6 10. d4 Re8
1968 Kiev (Ukraine) – Round 1 – Tukmakov, Vladimir B – 1/2-1/2 – Kurass, Iskir – G1 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. h3 h6 10. d4 Re8
1968 Kiev (Ukraine) – Round 4 – Tukmakov, Vladimir B – 1/2-1/2 – Nikolaevsky, Yuri V – G5 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. h3 h6 10. d4 Re8
1969 URS Ch U18 playoff – Round 12 – Shteinberg, Mordechai – 1/2-1/2 – Karpov, Aleksandr – G10 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. h3 h6 10. d4 Re8

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