C93b — Spanish: Closed, Smyslov, 10.d3

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.d3 * ● Trait aux Noirs

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, Be7 enfermé, Bc8 enfermé.
Problèmes : Bc1 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nc3 — Développer Nb1
● Bg5 — Clouer Nf6
● Bc2 — Anticiper ...Na5

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte e5, paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : Be7 enfermé, Bc8 enfermé, arriéré c7.
Plans :
● ...Bg4 — Développer Bc8, clouer Nf3
● ...Na5 — Attaquer Bb3
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C93b — 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.d3

Eval: [+0.26]

Les coups candidats

10…Re8 — 42.7% (79 parties)

Ambassadeurs : Schneider, Hans-Juergen Prof Dr (3x), Can, Ecrin Azra (2x), Svane, Rasmus (2x), Cuijpers, Frans Andre (1x), Porath, Yosef (1x), Cappello, Giovanni (1x), Littleton, Mark (1x), Mestrovic, Zvonimir (1x)

10…Na5 — 36.8% (68 parties)

Ambassadeurs : Schneider, Hans-Juergen Prof Dr (6x), Westerinen, Heikki M.J. (2x), Pino Munoz, Francisca (2x), Johansson, Mattias 1973 (2x), Scholl, Eddie C (1x), Kramer, Hanspeter (1x), Evans, Larry (1x), Lombardy, William J (1x)

10…Bb7 — 11.9% (22 parties)

Ambassadeurs : Hertel V (1x), Abu Aita Mohammed (1x), Suetin, Alexey S (1x), Dervishi, Erald (1x), Cardena Cazares, Manuel Bernardo (1x), Cab Canul, Miguel Angel (1x), Pamphile, Geraldine Victoria (1x), Faustino Gisela (1x)

10…Be6 — 3.8% (7 parties)

Ambassadeurs : Branco, Guilherme Paulino (1x), Marshall, Frank (1x), Nezhmetdinov, Rashid (1x), Krogius, Nikolai V (1x), Ruzicka, Ales (1x), Dusek, Vladimir (1x), Szitkey, Milan (1x), Latal, Stanislav (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10…Re8	10…Na5	10…Bb7	10…Be6
<1800	20	15%	50%	15%	—
1800-2200	68	41%	41%	9%	4%
2200-2600	41	54%	34%	12%	—
2600+	12	92%	8%	—	—

Évolution par décennie (% des parties)

Décennie	N parties	10…Re8	10…Na5	10…Bb7	10…Be6
1940s	1	—	—	—	100%
1960s	14	57%	36%	—	7%
1970s	3	67%	33%	—	—
1980s	8	38%	62%	—	—
1990s	12	33%	33%	25%	—
2000s	35	29%	37%	26%	3%
2010s	79	38%	43%	9%	4%
2020s	33	67%	18%	9%	3%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10…Re8	38%	67%	▲ +28.7%
10…Na5	43%	18%	▼ -24.9%
10…Bb7	9%	9%	+0.2%
10…Be6	4%	3%	▼ -0.8%

Parties historiques

10…Re8 — 42.7% (79 parties)

1962 — Parma, Bruno vs Toran Albero, Roman — 1/2-1/2 — Torremolinos zt
1964 — Cuijpers, Frans Andre vs Porath, Yosef — 1-0 — Tel Aviv olm
1964 — Nezhmetdinov, Rashid vs Yudovich, Mikhail M — 1/2-1/2 — Baku Baku AZE
1965 — Bobekov, Radko vs Minev, Nikolay N — 1/2-1/2 — Varna BUL
1966 — Zheliandinov, Viktor vs Gufeld, Eduard — 1-0 — Soviet Union

10…Na5 — 36.8% (68 parties)

1962 — Evans, Larry vs Lombardy, William J — 1-0 — New York, NY USA
1967 — Nei, Iivo vs Gipslis, Aivars — 1/2-1/2 — Soviet Union
1968 — Kalatozishvili, Guram vs Megrelishvili, Akaki — 0-1 — ?
1969 — Westerinen, Heikki M.J. vs Scholl, Eddie C — 1-0 — Wijk aan Zee NED
1969 — Westerinen, Heikki M.J. vs Kramer, Hanspeter — 1/2-1/2 — Wijk aan Zee NED

10…Bb7 — 11.9% (22 parties)

1995 — Cardena Cazares, Manuel Bernardo vs Cab Canul, Miguel Angel — 1/2-1/2 — Merida MEX
1996 — Hertel V vs Abu Aita Mohammed — 0-1 — GER
1996 — Suetin, Alexey S vs Dervishi, Erald — 1/2-1/2 — Bern open
2001 — Garcia Martinez, Enara vs Corral Yugueros, Nuria — 0-1 — ?
2001 — Rau, Johann vs Exler, Martin — 1-0 — ?

10…Be6 — 3.8% (7 parties)

1944 — Branco, Guilherme Paulino vs Marshall, Frank — 1/2-1/2 — simul, New York
1961 — Nezhmetdinov, Rashid vs Krogius, Nikolai V — 1-0 — Moscow RUS
2004 — Ruzicka, Ales vs Dusek, Vladimir — 1-0 — Klatovy CZE
2010 — Szitkey, Milan vs Latal, Stanislav — 1-0 — Tatranske Matliare
2012 — Okuyaz, Duru vs Buran, Seher — 1-0 — Kemer TUR

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● c7
Chaînes	● b2→c3, g2→h3, d3→e4	● a6→b5, d6→e5, c7→d6, g7→h6
Passés	—	—
Majorité	—	—

Cases

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

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bb3	● Bb3 Actif (mob. 6)
Be7		● Be7 Enfermé (mob. 0)
Bc8		● Bc8 Non développé (mob. 6)
Paire de fous	● Oui	● Oui
Clouages	—	● pawn f7
Non développées	3 (b1, c1, a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● c3-c4, ● d3-d4	● …d6-d5

Partie
1961 Chigorin Memorial – Round 1 – Nezhmetdinov, Rashid – 1-0 – Krogius, Nikolai V – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3 d6 9. c3 h6 10. d3 Be6
1962 New York m – Round 5 – Evans, Larry M – 1-0 – Lombardy, William J – 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. d3 Na5
1962 Torremolinos zt – Round 1 – Parma, Bruno – 1/2-1/2 – Toran Albero, Roman – 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. d3 Re8
1964 Baku Baku AZE – Round ? – Nezhmetdinov, Rashid – 1/2-1/2 – Yudovich, Mikhail M – 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. h3 h6 10. d3 Re8
1967 URS Team Ch – Round 1 – Nei, Iivo – 1/2-1/2 – Gipslis, Aivars – G39 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. d3 Na5
1968 Buenos Aires – Round 1 – Palermo, Vicente – 1-0 – Rubinetti, Jorge – G18 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. d3 Re8
1968 Sarajevo – Round 10 – Mestrovic, Zvonimir – 1/2-1/2 – Martinovic, Slobodan – G72 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. d3 Re8
1969 Hoogovens-B – Round 1 – Westerinen, Heikki M.J. – 1/2-1/2 – Kramer, Hanspeter – 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. d3 Na5
1969 Hoogovens-B – Round 14 – Westerinen, Heikki M.J. – 1-0 – Scholl, Eddie C – G79 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. d3 Na5