B77b — Sicilian: Dragon, Yugoslav, Byrne Variation

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 a5 * ○ Trait aux Blancs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : majorité aile_dame (3v2), case forte d4, case forte e4, case forte b5, case forte d5, Be3 actif, Bc4 actif, paire de fous, colonne d.
Faiblesses adverses : arriéré b7, Bg7 enfermé, Bc8 enfermé.
Problèmes : roi au centre.
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : majorité centre (2v1), case forte b4, case forte e5, avant-poste e5(C), paire de fous, colonne c.
Faiblesses adverses : roi blanc au centre.
Problèmes : Bg7 enfermé, Bc8 enfermé, arriéré b7.
Plans :
● ...Bf5 — Développer Bc8
● ...Na5 — Attaquer Bc4
● ...d5 — Rupture
● ...e6 — Rupture
● ...e5 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

B77b — Dragon Yugoslav Byrne Variation

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 a5

Eval: [+1.29]

Les coups candidats

10.a4 — 37.4% (76 parties)

Ambassadeurs : Byrne, David (4x), Jirovsky, Milos (4x), Mauro, Alan (4x), Mestrovic, Zvonimir (2x), Hamberger, Hermann (2x), Melamed, Tatjana (2x), Desbonnes, Samy (2x), Avner, Uri (1x)

10.Bb3 — 14.8% (30 parties)

Ambassadeurs : Byrne, David (4x), Matanovic, Aleksandar (3x), Jirovsky, Milos (3x), Parma, Bruno (2x), Boudignon, Serge (2x), Mauro, Alan (2x), Vucic, Mihovil (2x), Polakova Marta (1x)

10.h4 — 14.3% (29 parties)

Ambassadeurs : Byrne, David (3x), Kolbak, Jens (2x), Jirovsky, Pavel (2x), Koch, Jean-Rene (2x), Hennings, Artur (1x), Liptay, Laszlo Dr. (1x), Seidman, Herbert (1x), Reshevsky, Samuel (1x)

10.O-O-O — 13.8% (28 parties)

Ambassadeurs : Jirovsky, Pavel (3x), Svatos, Jan (2x), Gligorić, Svetozar (1x), Parma, Bruno (1x), Menvielle Laccourreye, Augusto (1x), Byrne, David (1x), Neukirch, Detlef (1x), Walkewitz, Hubert (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	10.a4	10.Bb3	10.h4	10.O-O-O
<1800	3	—	33%	—	—
1800-2200	49	39%	8%	18%	24%
2200-2600	64	42%	14%	11%	11%
2600+	1	—	—	100%	—

Évolution par décennie (% des parties)

Décennie	N parties	10.a4	10.Bb3	10.h4	10.O-O-O
1960s	42	26%	21%	17%	10%
1970s	15	60%	7%	13%	13%
1980s	7	43%	—	—	14%
1990s	74	43%	15%	9%	14%
2000s	40	38%	18%	22%	10%
2010s	24	25%	8%	12%	29%
2020s	1	—	—	100%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
10.a4	25%	0%	▼ -25.0%
10.Bb3	8%	0%	▼ -8.3%
10.h4	12%	100%	▲ +87.5%
10.O-O-O	29%	0%	▼ -29.2%

Joueurs célèbres

Champions du monde dans cette position

Karpov, Anatoly — 1 partie

Parties historiques

10.a4 — 37.4% (76 parties)

1962 — Parma, Bruno vs Byrne, David — 1/2-1/2 — Mar del Plata ARG
1965 — Rubinetti, Alejandro vs Bielicki, Carlos — 1/2-1/2 — Buenos Aires ch-ARG
1965 — Holaszek, Hans vs Westman, Jan Erik — 1/2-1/2 — Sinaia
1966 — Mestrovic, Zvonimir vs Avner, Uri — 0-1 — WchTJ U26 fin-A
1966 — Levy, David N L vs Suarez, Luis Armando — 1-0 — Oerebro

10.Bb3 — 14.8% (30 parties)

1961 — Weinstein, Raymond vs Byrne, David — 0-1 — New York, NY USA
1966 — Polakova Marta vs Georgieva, Antonina — 1/2-1/2 — Oberhausen
1966 — Sherwin, James T vs Byrne, David — 1-0 — New York, NY USA
1966 — Parma, Bruno vs Abreu Rodriguez, Juan Luis — 1/2-1/2 — Havana olm
1966 — Parma, Bruno vs Rodriguez Vargas, Orestes — 1/2-1/2 — La Habana ol

10.h4 — 14.3% (29 parties)

1961 — Seidman, Herbert vs Byrne, David — 1-0 — New York, NY USA
1963 — Fischer, Robert J vs Byrne, David — 1-0 — Bay City
1964 — Hennings, Artur vs Liptay, Laszlo Dr. — 1/2-1/2 — Soviet Union
1964 — Jimenez Zerquera, Eleazar vs Bielicki, Carlos — 0-1 — Havana CUB
1965 — Zwaig, Arne vs Johansson, Martin 1979 — 1-0 — Stockholm tt SWE-NOR

10.O-O-O — 13.8% (28 parties)

1963 — Neukirch, Detlef vs Walkewitz, Hubert — 1-0 — Leipzig GER
1964 — Menvielle Laccourreye, Augusto vs Byrne, David — 0-1 — Tel Aviv ISR
1965 — Gligorić, Svetozar vs Parma, Bruno — 1/2-1/2 — Novi Sad SRB
1966 — Djurovic, Dejan vs Mestrovic, Zvonimir — 0-1 — Vrnjacka Banja SRB
1972 — Kotkov, Yuri M vs Rosenberg Morch, Mathias — 0-1 — Moscow RUS

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● b7
Chaînes	● g2→f3, f3→e4	● e7→d6, f7→g6, h7→g6
Passés	—	—
Majorité	● aile_dame 3v2	● centre 2v1

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d4 (2v1), ● e4 (2v1), ● b5 (3v0), ● d5 (3v1)	● b4 (2v0), ● e5 (2v0)
Cases faibles	—	—
Centre	● d4 (2v1), ● d5 (3v1), ● e4 (2v1)	● e5 (2v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● c

Pièces

	♔ Blancs	♚ Noirs
Be3	● Be3 Actif (mob. 5)
Bc4	● Bc4 Actif (mob. 9)
Bg7		● Bg7 Enfermé (mob. 2)
Bc8		● Bc8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Clouages	—	● pawn f7
Non développées	2 (a1, h1)	2 (c8, a8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Au centre !	● Roqué
Droits de roque	O-O / O-O-O	—

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● e4-e5, ● f3-f4	● …d6-d5, ● …e7-e6, ● …e7-e5

Partie
1961 New York ch-USA – Round 2 – Weinstein, Raymond – 0-1 – Byrne, David – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. Bb3 Bd7
1961 New York ch-USA – Round 4 – Seidman, Herbert – 1-0 – Byrne, David – G18 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Nc6 7. Be3 Bg7 8. Qd2 O-O 9. Bc4 a5 10. h4 Ne5
1962 Mar del Plata – Round 6 – Parma, Bruno – 1/2-1/2 – Byrne, David – G58 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. a4 Bd7
1962 Varna ol (Men) fin-A – Round 4 – Gragger, Anton Fritz – 1-0 – Byrne, David – G4 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. g4 Nd7
1963 Leipzig Open 6364 2nd – Round 3 – Neukirch, Detlef – 1-0 – Walkewitz, Hubert – G16 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5 10. O-O-O Ne5
1964 Capablanca Memorial – Round 1 – Jimenez Zerquera, Eleazar – 0-1 – Bielicki, Carlos – G15 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 O-O 9. Qd2 a5 10. h4 Ne5
1964 Tel Aviv olm fin-A – Round 7 – Menvielle Laccourreye, Augusto – 0-1 – Byrne, David – G150 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. O-O-O a4
1964 URS – Round 5 – Hennings, Artur – 1/2-1/2 – Liptay, Laszlo Dr. – G1 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 d6 8. f3 O-O 9. Qd2 a5 10. h4 Ne5
1965 Buenos Aires ch-ARG – Round 17 – Rubinetti, Alejandro – 1/2-1/2 – Bielicki, Carlos – G105 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Bc4 Nc6 9. Qd2 a5 10. a4 Nxd4
1965 Novi Sad – Round 14 – Gligorić, Svetozar – 1/2-1/2 – Parma, Bruno – G118 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. O-O-O a4
1965 SM - Falkoping – Round 5 – Nilsson, Arvid – 1/2-1/2 – Johansson, Martin 1979 – G10 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 g6 7. f3 Bg7 8. Qd2 O-O 9. Bc4 a5 10. O-O Ne5
1965 WchT U26 12. fin-B – Round 2 – Holaszek, Hans – 1/2-1/2 – Westman, Jan Erik – G5 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5 10. a4 Bd7
1966 Havana olm – Round 1 – Parma, Bruno – 1/2-1/2 – Abreu Rodriguez, Juan Luis – G26 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. Bb3 Nd7
1966 La Habana ol – Round ? – Parma, Bruno – 1/2-1/2 – Rodriguez Vargas, Orestes – G12 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 g6 7. f3 Bg7 8. Be3 O-O 9. Qd2 a5 10. Bb3 Nd7
1966 New York ch-USA – Round 2 – Reshevsky, Samuel – 1-0 – Byrne, David – G9 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Nc6 7. f3 Bg7 8. Qd2 O-O 9. Bc4 a5 10. h4 Ne5
1966 New York ch-USA – Round 4 – Rossolimo, Nicolas – 1/2-1/2 – Byrne, David – G20 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Nc6 7. f3 Bg7 8. Qd2 O-O 9. Bc4 a5 10. O-O a4
1966 New York ch-USA – Round 7 – Sherwin, James T – 1-0 – Byrne, David – G37 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Nc6 7. f3 Bg7 8. Qd2 O-O 9. Bc4 a5 10. Bb3 Nxd4
1966 Vrnjacka Banja – Round ? – Djurovic, Dejan – 0-1 – Mestrovic, Zvonimir – G14 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 g6 7. f3 Bg7 8. Be3 O-O 9. Qd2 a5 10. O-O-O Nd7
1966 WchTJ U26 fin-A – Round 7 – Mestrovic, Zvonimir – 0-1 – Avner, Uri – G38 1. d4 Nf6 2. Nc3 c5 3. Nf3 cxd4 4. Nxd4 g6 5. e4 d6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. a4 Bd7
1968 Lugano ol (Men) fin-A – Round 11 – Matanovic, Aleksandar – 1/2-1/2 – Lombardy, William J – G63 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. Bb3 Nxd4
1968 Palma de Mallorca – Round 8 – Matanovic, Aleksandar – 1/2-1/2 – Byrne, David – G74 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. Bb3 Nxd4
1968 Sarajevo – Round 13 – Bogdanovic, Radivoje – 1-0 – Mestrovic, Zvonimir – G89 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. a4 Nb4
1968 Vinkovci – Round 3 – ? – 0-1 – Byrne, David – G23 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 O-O 9. Qd2 a5 10. a4 Nxd4
1968 Vinkovci – Round 5 – Matanovic, Aleksandar – 1-0 – Byrne, David – G33 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. O-O a4
1968 Vinkovci – Round 7 – Robatsch, Karl – 1/2-1/2 – Byrne, Donald – G43 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5 10. a4 Nxd4
1969 Vrsac – Round 5 – Matanovic, Aleksandar – 1-0 – Byrne, David – G38 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 a5 10. Bb3 Nxd4
1969 WchT U26 fin-A 16th – Round 3.2 – Hlousek, Zdenek – 0-1 – Kolbak, Jens – G21 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Bc4 Nc6 9. Qd2 a5 10. h4 Ne5
1969 WchT U26 fin-A 16th – Round 6.3 – Postler, Reinhard – 1-0 – Kolbak, Jens – G42 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5 10. a4 Nxd4
1969 WchT U26 qual-B – Round 3.1 – Wahlbom, Magnus – 1-0 – Sloth, Jorn – G11 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. Be3 Nc6 8. f3 O-O 9. Qd2 a5 10. a4 Nxd4
1972 San Antonio – Round 6 – Karpov, Anatoly – 1-0 – Byrne, David – G80 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5 10. a4 Nxd4

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