C41v — Philidor: Improved Hanham, 7.a4 c6

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.a4 c6 * ○ Trait aux Blancs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur la case forte g5, un fou actif en c4 et la paire de fous.

Côté adverse. Les fous enfermés en e7 et c8.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1).

Plans. Bg5 (Clouer Nf6) ; h3 (Empêcher ...Bg4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur la paire de fous.

Côté adverse. Le fou enfermé en c1.

En contrepartie. Plusieurs pièces dorment encore (le fou c8 et la tour a8).

Plans. ...Bg4 (Développer Bc8, clouer Nf3) ; ...c5 (Rupture) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

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

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v0)	—
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v2)	—

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	● …c6-c5, ● …d6-d5

Partie
1929 Rogaska Slatina - Round 14 - Singer, Leone - 1-0 - Przepiorka, Dawid - G50 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. h3 Qc7 9. Qe2 h6 10. Be3 Nxe4
1935 GER ch Bad Aachen – Round 9 – Schlage, Willi – 0-1 – Rellstab, Ludwig – G9 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2 b6 9. h3 Qc7 10. Be3 Ba6
1940 Berlin – Round 1 – Grammatikoff, J. – 1/2-1/2 – Rellstab, Ludwig Sr – G4 1. e4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 Nbd7 5. Bc4 Be7 6. O-O c6 7. a4 O-O 8. h3 b6 9. Qe2 a6 10. b3 Bb7
1955 Buenos Aires CA – Round 2 – Bianco Esposito, Antonio – 1-0 – Benko, Filip – G16 1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O c6 7. a4 O-O 8. Ba2 Qc7 9. Qe2 a5 10. Rd1 Nb8
1955 Moscow Ch – Round 12 – Ravinsky, Grigory – 1-0 – Lebedev, Boris – G74 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O c6 7. a4 O-O 8. Ba2 Qc7 9. Qe2 h6 10. h3 Re8
1960 Buenos Aires ch-ARG – Round 1 – Aguilar Dominguez, Cristhel Guadalupe – 1/2-1/2 – Bazan, Osvaldo – G10 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. O-O Be7 6. a4 Ngf6 7. Nc3 O-O 8. Bg5 h6 9. dxe5 Nxe5 10. Bxf6 Bxf6
1960 Buenos Aires ch-ARG – Round 2 – Pelikan, Anna – 1-0 – Torgalsen – G16 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. h3 h6 9. Re1 Re8 10. Ba2 Qc7
1960 FRG Ch U20 – Round 13 – Schwenkreis, Thomas – 1/2-1/2 – Pfleger, Helmut, Dr. – G12 1. e4 d6 2. d4 e5 3. Nf3 Nd7 4. Bc4 c6 5. Nc3 Be7 6. O-O Ngf6 7. a4 O-O 8. Ba2 a6 9. Re1 Qc7 10. h3 Rb8
1961 Zevenaar – Round 3 – Wade, Robert G – 1/2-1/2 – Guimard, Carlos E – G33 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O c6 7. a4 O-O 8. Bg5 h6 9. dxe5 Nxe5 10. Nxe5 dxe5
1962 Spartak Ch – Round ? – Zhukhovitsky, Samuel – 1-0 – Sergievsky, Vladimir D – G9 1. e4 d6 2. Nf3 Nf6 3. Nc3 e5 4. d4 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2 h6 9. Qe2 Qc7 10. h3 Nh7
1963 Amsterdam – Round 2 – Hartoch, Robert G – 1-0 – Dunkelblum, Arthur – G13 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O c6 7. a4 O-O 8. h3 Qc7 9. Be3 exd4 10. Nxd4 Ne5
1963 Bath ch-BCF – Round 10 – Hindle, Owen M – 1/2-1/2 – Penrose, Justin – G85 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2 Qc7 9. h3 h6 10. Be3 Re8
1966 La Habana olm fin-A – Round 7 – Ciocaltea, Victor – 0-1 – Menvielle Laccourreye, Augusto – G135 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. a4 Be7 6. Nc3 Ngf6 7. O-O O-O 8. Ba2 Ne8 9. Qe2 Bf6 10. Be3 Qe7
1967 Hungary CCC-8 – Round ? – Schrancz, Istvan – 1/2-1/2 – Pal, Gyorgy – G9 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. O-O Be7 6. a4 Ngf6 7. Nc3 O-O 8. Ba2 h6 9. h3 Re8 10. Be3 Qc7
1967 URS Team Ch – Round 1 – Kupreichik, Viktor D – 1/2-1/2 – Rogozhnikov, Oleg – G112 1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. a4 Be7 6. Nc3 Ngf6 7. O-O O-O 8. Ba2 Qc7 9. Qe2 h6 10. Rd1 a5
1969 Clare Benedict Cup 16th – Round 5 – Holaszek, Hans – 1/2-1/2 – Langeweg, Kick – G23 1. e4 d6 2. d4 e5 3. Nf3 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. h3 Qc7 9. Qe2 h6 10. Ba2 b6
20. European Teams 2015 – Round 8.9 – Maroroa Jones, Gawain C B – 1/2-1/2 – Can, Emre – G362 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. a5 exd4 9. Nxd4 Ne5 10. Ba2 Re8
22. ECU Club Cup 2006 – Round 6 – Asrian, Karen – 1/2-1/2 – Eljanov, Pavel – G157 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2 b6 9. Re1 a6 10. Bg5 Rb8
42. Olympiad 2016 – Round 5.31 – Harper, Ryan – 0-1 – Predojevic, Borki – G361 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O c6 8. h3 a5 9. Re1 exd4 10. Nxd4 Nc5
Alekhine Memorial 1971 – Round 1 – Stein, Leonid – 1/2-1/2 – Petrosian, Tigran V – G17 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. a5 h6 9. Ba2 Re8 10. dxe5 dxe5
FIDE World Blitz Championship 2025 – Round 12 – Erigaisi Arjun – 1/2-1/2 – Vachier-Lagrave Maxime – G222 1. d4 Nf6 2. c4 g6 3. Bg5 Bg7 4. Nc3 d5 5. Bxf6 Bxf6 6. cxd5 c5 7. dxc5 Nd7 8. g3 Nxc5 9. Bg2 O-O 10. Rc1 Qb6
World Blitz 2015 – Round 10.78 – Stefansson, Hannes – 1-0 – Hasangatin, Ramil – G655 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. h3 exd4 9. Nxd4 Ne5 10. Ba2 Re8
World Blitz 2015 – Round 2.53 – Grandelius, Nils – 1/2-1/2 – Kunin, Vitaly – G114 1. Nf3 d6 2. d4 Nf6 3. Nc3 Nbd7 4. e4 e5 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. a5 Qc7 9. Qe2 exd4 10. Nxd4 Ne5
World Blitz 2018 – Round 14.22 – Guseinov, Gadir – 1-0 – Yudin, Sergei – G823 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. a5 Qc7 9. Re1 exd4 10. Nxd4 Re8
World Blitz 2018 – Round 16.47 – Al-Sayed, Mohammed – 1-0 – Khismatullin, Denis – G964 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O c6 8. b3 exd4 9. Nxd4 Ne5 10. Be2 Re8
World Blitz 2018 – Round 3.38 – Guseinov, Gadir – 1-0 – Maslak, Konstantin – G169 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. a5 Qc7 9. Re1 h6 10. h3 Re8
World Blitz 2019 – Round 21.49 – Piorun, Kacper – 1/2-1/2 – Bologan, Victor – G1430 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O c6 8. h3 exd4 9. Qxd4 Nc5 10. Bf4 Ne6
World Blitz 2019 – Round 5.52 – Smirin, Ilia – 1-0 – Tsoi, Dmitry – G349 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2 b6 9. Re1 a6 10. h3 Rb8
World Rapid 2019 – Round 10.77 – Abdusattorov, Nodirbek – 1-0 – Reshetnikov, Alexey – G680 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. h3 exd4 9. Nxd4 d5 10. exd5 Nb6
World Rapid Final 2012 – Round 13 – Karjakin, Sergey – 1-0 – Kazhgaleyev, Murtas – G100 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Ba2 a5 9. h3 exd4 10. Nxd4 Re8

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 c6

Eval: [+0.51]

Les coups candidats

8.Re1 — 42.5% (2046 parties) →

Ambassadeurs : Kunin, Vitaly (19x), Neuman, Petr (12x), Khismatullin, Denis (11x), Luther, Thomas (10x), Herzog, Klaus (9x), Oratovsky, Michael (9x), Kevlishvili, Robby (9x), Schmidt-Schaeffer, Sebastian, Dr. (8x)

8.h3 — 16.1% (775 parties)

Ambassadeurs : Kunin, Vitaly (14x), Jovanovic, Zoran (10x), Hopman, Pieter (7x), Klemanic, Emil (5x), Van Foreest, Jorden (5x), Oratovsky, Michael (5x), Lorscheid, Gerhard (5x), Eliseev, Evgeniy (4x)

8.Ba2 — 15.8% (758 parties)

Ambassadeurs : Gaponenko, Inna (8x), Zablotsky, Sergei (7x), Amonatov, Farrukh (7x), Kirillova, Varvara (5x), Kharashuta, Ekaterina (5x), Lorscheid, Gerhard (5x), Polgar, Sofia (4x), Gelashvili, Tamaz (4x)

8.a5 — 9.7% (467 parties)

Ambassadeurs : Szelag, Marcin (6x), Kunin, Vitaly (6x), Kokol, Peter (4x), Jovanovic, Zoran (4x), Oparin, Grigoriy (3x), Neuman, Petr (3x), Khruschiov, Alexey (3x), Mestre Bellido, Hector (3x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	8.Re1	8.h3	8.Ba2	8.a5
<1800	35	34%	37%	6%	9%
1800-2200	1199	41%	17%	12%	10%
2200-2600	3125	44%	15%	18%	10%
2600+	144	64%	15%	10%	6%

Évolution par décennie (% des parties)

Décennie	N parties	8.Re1	8.h3	8.Ba2	8.a5
1900s	1	—	100%	—	—
1910s	2	—	50%	—	—
1920s	2	—	50%	—	—
1930s	4	—	—	25%	—
1940s	3	—	33%	—	—
1950s	11	9%	27%	18%	—
1960s	38	16%	13%	32%	—
1970s	47	11%	4%	28%	4%
1980s	92	24%	10%	5%	15%
1990s	649	30%	8%	23%	10%
2000s	1131	46%	7%	19%	9%
2010s	2168	45%	20%	14%	11%
2020s	664	50%	26%	11%	7%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
8.Re1	45%	50%	▲ +4.6%
8.h3	20%	26%	▲ +6.1%
8.Ba2	14%	11%	▼ -3.1%
8.a5	11%	7%	▼ -3.3%

Joueurs célèbres

Champions du monde dans cette position

Carlsen, Magnus — 3 parties
Gukesh D — 2 parties
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie

Parties historiques

8.Re1 — 42.5% (2046 parties)

1957 — Keres, Paul vs Penrose, Justin — 1-0 — Hastings ENG
1963 — Tseshkovsky, Vitaly vs Szekely, Mihaly — 1-0 — Budapest HUN
1963 — Troianescu, Octav vs Alexandrescu, Gheorghe — 1-0 — Bucharest ROU
1964 — Matanovic, Aleksandar vs Udovcic, Mijo — 1-0 — Pula CRO
1964 — Matanovic, Aleksandar vs Clarke, Peter H — 1-0 — Kecskemet HUN

8.h3 — 16.1% (775 parties)

1909 — Brach, Julius vs Di Perna Molinero, Alain — 1-0 — Brno CZE
1913 — Gargulak Metodej vs Pokorny, Amos — 1-0 — Ceska Trebova
1929 — Singer, Leone vs Przepiorka, Dawid — 1-0 — Rogaska Slatina
1940 — Grammatikoff, J. vs Rellstab, Ludwig Sr — 1/2-1/2 — Berlin GER
1952 — Matanovic, Anto vs Porreca, Alessio — 1-0 — Belgrade Belgrade YUG

8.Ba2 — 15.8% (758 parties)

1935 — Schlage, Willi vs Rellstab, Ludwig — 0-1 — GER ch Bad Aachen
1955 — Bianco Esposito, Antonio vs Benko, Filip — 1-0 — Buenos Aires ARG
1955 — Ravinsky, Grigory vs Lebedev, Boris — 1-0 — Moscow RUS
1960 — Schwenkreis, Thomas vs Pfleger, Helmut, Dr. — 1/2-1/2 — Grossrosseln
1960 — Schuster, Theodor vs Barendregt, Johan — 1/2-1/2 — Berg en Dal A

8.a5 — 9.7% (467 parties)

1971 — Stein, Leonid vs Petrosian, Tigran V. — 1/2-1/2 — Moscow RUS
1979 — Jansa, Vlastimil vs Planinec, Albin — 1-0 — Polanica Zdroj POL
1980 — Justo, Virginia vs Gomez Sarabia, Isaias — 1/2-1/2 — Buenos Aires ARG
1983 — Laube, Bernhard vs Bucher Janik — 1-0 — corr ch-BRD jr
1984 — Tischbierek, Raj vs Hesse, Peter — 1-0 — Leipzig GER

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