C41w — Philidor: Improved Hanham, 7.Qe2 c6 8.a4

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.a4 c6 8.Qe2 * ● 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 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
● ...c5 — Rupture
● ...d5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C41w — Improved Hanham

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.a4 c6 8.Qe2

Eval: [-0.08]

Les coups candidats

8…Qc7 — 28.4% (344 parties)

Ambassadeurs : Hesse, Peter (7x), Morin, Louis (5x), Boe, Mads (5x), Bezold, Michael (4x), Klemanic, Emil (4x), Chistiakov, Alexander (3x), Den Ouden, A (3x), Oral, Tomas (3x)

8…exd4 — 25.6% (310 parties) →

Ambassadeurs : Schmidt-Schaeffer, Sebastian, Dr. (5x), Volosin, Leon (5x), Brglez, Francek (4x), Bricard, Emmanuel (4x), Tustanowski, Robert (4x), Wahls, Matthias (3x), Jansa, Vlastimil (3x), Kindermann, Stefan (3x)

8…a5 — 19.7% (238 parties)

Ambassadeurs : Manouck, Thierry (6x), Morin, Louis (5x), Autenrieth, Michael, Dr. (4x), Hebert, Jean (3x), Shabanov, Yuri (3x), Lubczynski, Rafal (3x), Ackermann, Hans Werner (3x), Sergievsky, Vladimir D (2x)

8…b6 — 18.3% (221 parties)

Ambassadeurs : Pribyl, Josef (7x), Bisco, Igor (4x), Semmler, Guenter (4x), Schmidt-Schaeffer, Sebastian, Dr. (2x), Izeta Txabarri, Felix (2x), Svetushkin, Dmitry (2x), Gretarsson, Helgi Ass (2x), Kotan, Ladislav (2x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8…Qc7	8…exd4	8…a5	8…b6
<1800	12	25%	25%	42%	8%
1800-2200	330	33%	13%	19%	27%
2200-2600	656	24%	31%	21%	18%
2600+	9	22%	56%	11%	—

Évolution par décennie (% des parties)

Décennie	N parties	8…Qc7	8…exd4	8…a5	8…b6
1910s	6	50%	—	—	17%
1920s	7	29%	29%	—	—
1930s	7	71%	14%	—	14%
1940s	3	100%	—	—	—
1950s	11	36%	18%	27%	—
1960s	20	55%	25%	5%	5%
1970s	46	43%	22%	9%	9%
1980s	106	35%	24%	26%	6%
1990s	313	29%	33%	16%	16%
2000s	345	24%	22%	21%	25%
2010s	310	24%	21%	25%	23%
2020s	36	28%	53%	6%	8%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8…Qc7	24%	28%	▲ +3.9%
8…exd4	21%	53%	▲ +31.8%
8…a5	25%	6%	▼ -19.3%
8…b6	23%	8%	▼ -14.2%

Joueurs célèbres

Champions du monde dans cette position

Botvinnik, Mikhail — 2 parties
Alekhine, Alexander — 1 partie
Smyslov, Vladimir — 1 partie
Tal, Mikhail — 1 partie

Parties historiques

8…Qc7 — 28.4% (344 parties)

1911 — Teichmann, Richard vs Nimzowitsch, Aron — 1-0 — Carlsbad CZE
1912 — Schlechter, Carl vs Burn, Amos — 1-0 — Breslau GER
1912 — Schlechter, Carl vs Burn, Amos — 1-0 — Breslau GER
1927 — Botvinnik, Mikhail vs Romanovsky, Pjotr — 1/2-1/2 — Moscow ch-URS
1927 — Botvinnik, Mikhail vs Romanovsky, Pjotr — 1/2-1/2 — Moskou ch-URS

8…exd4 — 25.6% (310 parties)

1920 — Bogoljubow, Efim vs Nimzowitsch, Aron — 1-0 — Stockholm Grand Hotel Royal
1929 — Lundin, Erik vs Sjomark, O. — 1-0 — Stockholm SWE
1938 — Konstantinopolsky, Alexander vs Duz-Khotimirsky, Fedor Ivanovich — 1-0 — Kiev UKR
1950 — Suetin, Alexey S vs Gusev, Aleksandr — 1-0 — USSR ch sf
1950 — Erblis vs Randvier — 0-1 — Tallinn EST

8…a5 — 19.7% (238 parties)

1955 — Kevitz, Alexander vs Turner, Abe J — 1/2-1/2 — New York, NY USA
1957 — Pilnik Aranda, Karla Constanza vs Benko, Pal — 0-1 — Hafnarfirdi
1959 — Smyslov, Vladimir vs Lutikov, Anatoly S — 1-0 — Moscow RUS
1962 — Govbinder, Mikhail Yudovich vs Sergievsky, Vladimir D — 1/2-1/2 — Minsk BLR
1972 — Levitina, Irina vs Shikova, Vesmina — 1-0 — Skopje MKD

8…b6 — 18.3% (221 parties)

1912 — Tenner, Oscar vs Eliascheff, M. — 1-0 — Breslau GER
1937 — Brinckmann, Alfred vs Rellstab, Ludwig — 0-1 — Berlin GER
1964 — Behrensen, Jorge vs Rubinetti, Jorge — 1/2-1/2 — Buenos Aires ARG
1970 — Zeitler, Hans-Juergen vs Henningsen, Juergen — 0-1 — Voelklingen
1977 — Krauss, George vs Bono, Gael — 1-0 — Columbus, OH USA

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● d6→e5, b7→c6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● e4 (2v1), ● g5 (2v0)	—
Cases faibles	—	—
Centre	● d5 (3v2), ● e4 (2v1)	—

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bc4	● Bc4 Actif (mob. 8)
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	● …c6-c5, ● …d6-d5

Partie
1911 Karlsbad – Round 1 – Teichmann, Richard – 1-0 – Nimzowitsch, Aron – G162 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. Bb3 a6 10. h3 exd4
1912 DSB-18.Kongress – Round 14 – Schlechter, Carl – 1-0 – Burn, Amos – G109 1. d4 Nf6 2. Nf3 d6 3. Nc3 Nbd7 4. e4 e5 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. h3 h6 10. Be3 Re8
1916 Triberg – Round ? – Bogoljubow, Efim – 1-0 – Selezniev, Alexey – G6 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 h6 9. Ba2 Nh7 10. Be3 Bf6
1927 Moskou ch-URS – Round 6 – Botvinnik, Mikhail – 1/2-1/2 – Romanovsky, Pjotr – G18 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. Rd1 h6 10. Ba2 a6
1931 Moskou ch-URS – Round 1 – Goglidze, Viktor – 1/2-1/2 – Riumin, Nikolai – G96 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. dxe5 dxe5 10. Rd1 Nc5
1939 Bournemouth – Round 1 – Aitken, James – 0-1 – Klein Hansen, Emil – G13 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. Qe2 c6 7. a4 O-O 8. O-O Qc7 9. Bb3 h6 10. Be3 Re8
1943 BRA Ch m – Round 8 – De Souza Mendes, Joao – 0-1 – Charlier, Antoine – G8 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. dxe5 dxe5 10. Bb3 Nc5
1954 URS Team Ch – Round 5 – Aronin, Lev – 1-0 – Chistiakov, Alexander – G85 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. h3 b6 10. Rd1 Bb7
1954 URS-chTJ Coop – Round 1 – Lipnitsky, Isaac – 1-0 – Kolobov, Yury – G10 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. O-O Be7 6. a4 Ngf6 7. Qe2 O-O 8. Nc3 h6 9. Rd1 Qc7 10. h3 Re8
1959 Alekhine Memorial – Round 4 – Smyslov, Vladimir – 1-0 – Lutikov, Anatoly S – G22 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 a5 9. h3 exd4 10. Nxd4 Nc5
1960 Buenos Aires ch-ARG – Round 19 – Benko, Francisco – 1/2-1/2 – Torgalsen – G139 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Ne8 9. Be3 Nc7 10. Rad1 Bf6
1962 Mar del Plata – Round 8 – Pilnik, Herman – 1-0 – Guimard, Carlos E – G76 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Qe2 Qc7 9. h3 exd4 10. Nxd4 Re8
1963 Kiev Ch – Round 5 – Zurakhov, Vladlen Y – 0-1 – Kofman, Abram R – G17 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 Qc7 9. h3 a5 10. Be3 Rb8
1964 Buenos Aires – Round 1 – Behrensen, Jorge – 1/2-1/2 – Rubinetti, Jorge – G14 1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. d4 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 b6 9. Rd1 Qc7 10. Bg5 h6
1966 Hastings6667 – Round 5 – Kurajica, Bojan – 1/2-1/2 – Penrose, Justin – G25 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Qe2 Qc7 9. h3 h6 10. dxe5 dxe5
1973 Leningrad Interzonal – Round 7 – Smejkal, Jan – 1-0 – Rukavina, Josip – G106 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Qe2 Qc7 9. h3 h6 10. Ba2 a5

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