C41v — Philidor: Improved Hanham, 7.a4

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.a4 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : case forte b5, case forte d5, case forte g5, Bc4 actif, paire de fous.
Faiblesses adverses : Be7 enfermé, Bc8 enfermé.
Problèmes : Bc1 enfermé.
Plans :
● Bg5 — Clouer Nf6
● h3 — Empêcher ...Bg4

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : paire de fous.
Faiblesses adverses : Bc1 enfermé.
Problèmes : Be7 enfermé, Bc8 enfermé.
Plans :
● ...Bg4 — Développer Bc8, clouer Nf3
● ...c6 — Rupture
● ...c5 — Rupture
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C41v — Improved Hanham

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.a4

Eval: [+0.55]

Les coups candidats

7…c6 — 69.5% (3651 parties) →

Ambassadeurs : Kunin, Vitaly (37x), Jovanovic, Zoran (27x), Neuman, Petr (23x), Lorscheid, Gerhard (20x), Pribyl, Josef (18x), Kindermann, Stefan (15x), Zablotsky, Sergei (15x), Sredojevic, Ivan (14x)

7…a5 — 18.2% (955 parties)

Ambassadeurs : Plat, Vojtech (24x), Biti, Ozren (14x), Jobava, Baadur (11x), Lubczynski, Rafal (11x), Lazic, Miroljub (8x), Pikula, Dejan (7x), Bortnyk, Olexandr (7x), Kacharava, Nikolozi (7x)

7…a6 — 6.4% (334 parties)

Ambassadeurs : Movsesian, Sergei (9x), Hausrath, Daniel (9x), Vandenbussche, Thibaut (9x), Pancevski, Filip (7x), Skripchenko, Almira (7x), Muetsch, Annmarie (7x), Daulyte-Cornette, Deimante (6x), Alexieva, Silvia (6x)

7…exd4 — 4.4% (232 parties)

Ambassadeurs : Braun, Gottfried, Dr. (8x), Janev, Evgeni (5x), Malnar, Ales (5x), Kuipers, Stefan (5x), Eisenbeiser, Amadeus (4x), Cornette, Matthieu (4x), Danielsen, Henrik (4x), Kunin, Vitaly (4x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	7…c6	7…a5	7…a6	7…exd4
<1800	31	58%	23%	6%	6%
1800-2200	1134	68%	21%	4%	4%
2200-2600	3667	69%	18%	7%	5%
2600+	207	65%	18%	12%	2%

Évolution par décennie (% des parties)

Décennie	N parties	7…c6	7…a5	7…a6	7…exd4
1920s	1	100%	—	—	—
1930s	2	100%	—	—	—
1940s	1	100%	—	—	—
1950s	1	100%	—	—	—
1960s	24	96%	—	—	—
1970s	44	82%	11%	—	7%
1980s	56	82%	16%	2%	—
1990s	562	82%	13%	1%	2%
2000s	990	78%	17%	2%	2%
2010s	2743	63%	21%	10%	4%
2020s	833	69%	15%	6%	9%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
7…c6	63%	69%	▲ +5.4%
7…a5	21%	15%	▼ -6.2%
7…a6	10%	6%	▼ -4.2%
7…exd4	4%	9%	▲ +5.0%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 5 parties
Gukesh D — 2 parties

Parties historiques

7…c6 — 69.5% (3651 parties)

1929 — Singer, Leone vs Przepiorka, Dawid — 1-0 — Rogaska Slatina
1935 — Schlage, Willi vs Rellstab, Ludwig — 0-1 — GER ch Bad Aachen
1937 — Zollner Hans vs Heinrich Georg — 1-0 — Bad Oeynhausen GER
1942 — Keres, Paul vs Rellstab, Ludwig — 1-0 — Munich Munich GER
1957 — Keres, Paul vs Penrose, Justin — 1-0 — Hastings ENG

7…a5 — 18.2% (955 parties)

1974 — Poutiainen, Pertti vs Najdorf, Miguel — 1-0 — Nice FRA
1975 — Ciocaltea, Victor vs Radovici, Corvin — 1/2-1/2 — Sinaia
1976 — Schweber, Samuel vs Seidler, Aldo E. — 0-1 — Mar del Plata ARG
1978 — Matulovic, Milan vs Kurajica, Bojan — 1/2-1/2 — Belgrade SRB
1979 — Petrovic, Slobodan S vs Vukic, Milan — 1/2-1/2 — Bjelovar

7…a6 — 6.4% (334 parties)

1988 — Rivera, Daniel vs Matonte M — 1-0 — La Hora op II
1993 — Morovic Fernandez, Ivan vs Rivas Pastor, Manuel — 1-0 — ?
1994 — Voller, Ondrej vs Bebchuk, Evgeni — 0-1 — Klatovy CZE
1994 — Topalov, Veselin vs Abad Rivas, Marta Lucia — 1-0 — Dos Hermanas ESP
1996 — Emms, John M vs Hartoch, Robert G — 1-0 — Isle of Man open

7…exd4 — 4.4% (232 parties)

1977 — Augustin, Josef vs Lerner, Konstantin Z — 0-1 — Stary Smokovec SVK
1978 — Bernard, Ryszard vs Braun, Gottfried, Dr. — 1/2-1/2 — Rostock GER
1979 — Vogt, Lothar vs Braun, Gottfried, Dr. — 1/2-1/2 — DDR-ch 28th Suhl
1990 — Vitolinsh, Alvis vs Chiruka Devin — 0-1 — cr.
1991 — Smagin, Sergey vs Motwani, Paul — 1-0 — Vienna op Vienna AUT

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d6→e5, c7→d6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● b5 (3v0), ● d5 (3v1), ● g5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bc4	● Bc4 Actif (mob. 9)
Be7		● Be7 Enfermé (mob. 0)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	—	● pawn f7
Non développées	2 (c1, a1)	2 (c8, a8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● d4-d5	● …c7-c6, ● …c7-c5, ● …d6-d5

Partie
19. European Teams 2013 – Round 2.1 – Svidler, Peter – 1/2-1/2 – Ipatov, Alexander – G54 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a6 8. a5 h6 9. Re1 exd4 10. Nxd4 Ne5
19. European Teams 2013 – Round 9.3 – Navara, David – 1-0 – Jobava, Baadur – G321 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. h3 h6 9. Re1 Re8 10. b3 c6
1965 Titograd – Round 5 – Marić, Rudolf – 1-0 – Knezevic, Milorad – G40 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 h6 8. h3 Re8 9. Re1 c6 10. Ba2 b6
42. Olympiad 2016 – Round 2.4 – Radjabov, Teimour – 1-0 – Pancevski, Filip – G142 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O a6 8. a5 exd4 9. Qxd4 Nc5 10. h3 Ne6
42. Olympiad 2016 – Round 6.3 – Navara, David – 1/2-1/2 – Jobava, Baadur – G439 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. Re1 b6 9. b3 Bb7 10. Ba3 Re8
42. Olympiad 2016 – Round 8.2 – Kryvoruchko, Yuriy – 1-0 – Mchedlishvili, Mikheil – G563 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O a5 8. Re1 b6 9. Bg5 Bb7 10. Qd2 h6
43. Olympiad 2018 – Round 1.13 – Gruenfeld, Yehuda – 1/2-1/2 – Jobava, Baadur – G17 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. h3 b6 9. Re1 Bb7 10. b3 h6
43. Olympiad 2018 – Round 9.8 – Morozov, Natali – 0-1 – Van Foreest, Jorden – G619 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 exd4 8. Nxd4 Ne5 9. Ba2 Nc6 10. h3 Nb4
6. World Blitz 2010 – Round 25.10 – Caruana, Fabiano – 0-1 – Vachier-Lagrave, Maxime – G175 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a6 8. a5 exd4 9. Qxd4 Ng4 10. Nd5 Nde5
FIDE World Blitz Championship 2014 – Round 21.26 – Kryvoruchko, Yuriy – 1-0 – Movsesian, Sergei – G209 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a6 8. a5 b5 9. axb6 cxb6 10. Re1 Bb7
Norway Supreme Masters Blitz 2013 – Round 8.3 – Karjakin, Sergey – 1-0 – Carlsen, Magnus – G38 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 a6 8. a5 h6 9. h3 Re8 10. Re1 exd4
SportAccord Blitz Men 2012 – Round 9.1 – Grischuk, Alexander – 1-0 – Ivanchuk, Vasyl – G63 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 h6 8. Re1 a6 9. a5 exd4 10. Nxd4 Ne5
World Blitz 2016 – Round 12.8 – Dominguez Perez, Leinier – 1-0 – Bortnyk, Olexandr – G502 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. Re1 b6 9. Nd5 Nxd5 10. Bxd5 Rb8
World Blitz 2016 – Round 15.15 – Wei, Yi – 1-0 – Bortnyk, Olexandr – G588 1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. a4 a5 8. Re1 b6 9. h3 Bb7 10. Ba2 c6
World Blitz 2019 – Round 6.8 – Khusnutdinov, Rafael – 0-1 – Jobava, Baadur – G444 1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. d4 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O a5 8. h3 c6 9. Re1 h6 10. b3 Re8
World Rapid 2016 – Round 7.14 – Zhigalko, Sergei – 1/2-1/2 – Bortnyk, Olexandr – G253 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. a4 O-O 7. O-O a5 8. Re1 b6 9. b3 Bb7 10. Bb2 c6

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