C49r — Four Knights: Symmetrical, Metger, 10.d4 Ne6 11.Bc1 c5

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7 9.Re1 Nd8 10.d4 Ne6 11.Bc1 c5 * ○ 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 b5, la paire de fous et la colonne semi-ouverte b.

Côté adverse. Le fou enfermé en c8.

En contrepartie. Plusieurs pièces dorment encore (le fou c1 et la tour a1) et le pion isolé a2.

Plans. Bg5 (Clouer Nf6) ; h3 (Empêcher ...Bg4) ; Tour sur colonne b.

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur la case forte f4 et un avant-poste en f4.

Côté adverse. Le pion isolé a2 et le fou enfermé en c1.

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

Plans. ...Bg4 (Développer Bc8, clouer Nf3) ; ...c4 (Rupture) ; ...d5 (Rupture).

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	● c2, ● c3	—
Pions isolés	● a2	—
Arriérés	—	—
Chaînes	● c3→d4	● d6→c5, d6→e5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v1)	● f4 (2v1)
Cases faibles	—	—
Centre	● e5 (2v1)	—

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● b	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 7)
Bb5	● Bb5 Actif (mob. 9)
Bc8		● Bc8 Non développé (mob. 1)
Paire de fous	● Oui	Non
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	● c3-c4, ● d4-d5	● …c5-c4, ● …d6-d5

Partie
1909 St Petersburg – Round 1 – Perlis, Julius – 0-1 – Freiman, Sergey Nikolaevich – G51 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1915 Triberg – Round 2 – Weinstein, Shaul – 0-1 – Rabinovich, Ilya Mar – G8 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1923 Karlsbad – Round 1 – Tarrasch, Siegbert – 1-0 – Teichmann, Richard – G92 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1928 Bad Kissingen – Round 6 – Tarrasch, Siegbert – 1/2-1/2 – Euwe, Max – G37 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1939 Leningrad ch-URS – Round 14 – Belavenets, Sergey – 1/2-1/2 – Kotov Lundqvist, Alex – G117 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1939 Leningrad ch-URS – Round 16 – Belavenets, Sergey – 1/2-1/2 – Tolush, Alexander – G134 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1941 Leningrad/Moscow – Round 3 – Bondarevsky, Igor – 0-1 – Lilienthal, Andor – G26 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 Qe7 8. Re1 d6 9. Bg5 Nd8 10. d4 Ne6
1946 London Championship Final – Round 2 – Sergeant, Edward – 1-0 – Allen, Frederick Walter – G5 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1947 Midlands-Czechoslovakia – Round 2 – Tylor, Theodore Henry – 1/2-1/2 – Pachman, Ludek – G15 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1949 Moscow RUS – Round ? – Petrosian, Tigran V – 1-0 – Lilienthal, X – G31 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. d3 Bxc3+ 6. bxc3 d6 7. Bg5 Qe7 8. O-O O-O 9. Re1 Nd8 10. d4 Ne6
1949 Moskou ch-URS – Round 1 – Petrosian, Tigran A. – 1-0 – Lilienthal, Andor – G140 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1949 Oldenburg – Round 7 – Rellstab, Ludwig – 1-0 – Kuppe, Wilhelm – G27 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1949 Oldenburg – Round 8 – Rautenberg, Wilhelm – 1-0 – Rellstab, Ludwig – G20 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1949 Oldenburg – Round 8 – Rautenberg, Wilhelm – 1-0 – Rellstab, Ludwig – G30 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1949 Zagreb – Round 17 – Simonovic, Borko – 1/2-1/2 – Ivkov, Borislav – G26 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1950 Amsterdam – Round 12 – Trifunovic, Petar – 1-0 – Van Scheltinga, Theo – G121 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1950 Amsterdam ch-NED – Round 1 – Barendregt, Johan – 1/2-1/2 – Van den Berg, Cees – G33 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1950 Dubrovnik olm – Round 13 – Kupferstich, Moises – 0-1 – Trifunovic, Petar – G196 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1952 Rio de Janeiro – Round 1 – Trifunovic, Petar – 1-0 – Rabar, Braslav – G5 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1954 URS Team Ch – Round 6 – Shaposhnikov, Yury – 1/2-1/2 – Kholmov, Ratmir D – G108 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1955 CSR-AUT m – Round 3.2 – Fichtl, Jiri – 1-0 – Stoeckl, Ernst – G12 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1956 URS Ch sf – Round ? – Byvshev, Vasily – 1-0 – Neishtadt, Yakov – G117 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1957 Dublin zt – Round 9 – Alexander Ronald Cheng – 1/2-1/2 – Pachman, Ludek – G73 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1958 Munich olm fin-A – Round 7 – Bhend, Edwin – 1/2-1/2 – Wade, Robert G – G69 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1959 Clare Benedict Cup 06th – Round 1.4 – Bhend, Edwin – 1/2-1/2 – Niephaus, Walter – G9 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1959 Lima – Round 11 – Pachman, Ludek – 1/2-1/2 – Ivkov, Borislav – G58 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1959 Marianske Lazne – Round 1 – Fichtl, Jiri – 1/2-1/2 – Rabar, Braslav – G8 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1960 Leipzig olm fin-A – Round 6 – Ivkov, Borislav – 1-0 – Darga, Klaus – G109 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1960 UKR Ch – Round 11 – Olifer, Alexandr V – 1-0 – Lazarev, Efim M. – G68 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1961 Baku ch-URS – Round 16 – Savon, Vladimir – 0-1 – Keres, Paul – G154 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1962 Moscow – Round 1 – Hort, Vlastimil – 1/2-1/2 – Lilienthal, Andor – G51 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. d3 d6 6. O-O Bxc3 7. bxc3 O-O 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1964 WchT U26 11. fin-A – Round 3.2 – Moe, Mogens – 1-0 – Kuettner, Uwe – G49 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
1967 It Agio – Round 6 – Rellstab, Ludwig – 1-0 – Stumpers, Louis – G15 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1968 Prague U26 – Round 2 – Kupka, Slavoj – 1/2-1/2 – Jansa, Vlastimil – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
1968 URS Team Ch – Round 1 – Osnos, Viatcheslav – 1/2-1/2 – Klovans, Janis – G154 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
GpB 2003 – Round 5 – Svidler, Peter – 1-0 – Karpov, Anatoly – G20 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
Linares 1992 – Round 6 – Short, Nigel D – 1-0 – Anand, Viswanathan – G24 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6
World Blitz 2019 – Round 3.44 – Vokhidov, Shamsiddin – 0-1 – Amin, Bassem – G194 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Qe7 9. Re1 Nd8 10. d4 Ne6
World Cup 1991 – Round 13 – Chandler, Murray G – 0-1 – Salov, Valery – G97 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Ne6

C49r — Symmetrical Metger

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7 9.Re1 Nd8 10.d4 Ne6 11.Bc1 c5

Eval: [+0.87]

Les coups candidats

12.Bf1 — 49.7% (223 parties)

Ambassadeurs : Willemze, Thomas (5x), Rellstab, Ludwig (4x), Lilienthal, Andor (3x), Birnboim, Nathan (3x), Koscielski, Janusz (3x), Wiesinger, Johann (3x), Perlis, Julius (2x), Pachman, Ludek (2x)

12.a4 — 28.7% (129 parties)

Ambassadeurs : Xie, Jun (5x), Stephan, Juergen Prof Dr (3x), Haba, Petr (3x), Nunn, John D M (2x), Barkwell, Michael C (2x), Middelburg, Tom (2x), Koscielski, Janusz (2x), Osterman, Georg (2x)

12.d5 — 6.5% (29 parties)

Ambassadeurs : Tarrasch, Siegbert (2x), Cortlever, Nico (2x), Delgado Crespo, Mairelys (2x), Mansson, Lars (2x), Euwe, Max (1x), Van den Bosch, Johannes (1x), Teichmann, Richard (1x), Keres, Paul (1x)

12.Bc4 — 4.7% (21 parties)

Ambassadeurs : Osnos, Viatcheslav (1x), Klovans, Janis (1x), Alexander Ronald Cheng (1x), Pachman, Ludek (1x), Moe, Mogens (1x), Kuettner, Uwe (1x), Byvshev, Vasily (1x), Neishtadt, Yakov (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	12.Bf1	12.a4	12.d5	12.Bc4
<1800	6	17%	50%	17%	—
1800-2200	99	52%	26%	7%	8%
2200-2600	223	53%	32%	4%	3%
2600+	6	33%	33%	17%	17%

Évolution par décennie (% des parties)

Décennie	N parties	12.Bf1	12.a4	12.d5	12.Bc4
1900s	2	100%	—	—	—
1910s	3	67%	33%	—	—
1920s	3	33%	—	67%	—
1930s	5	60%	—	20%	—
1940s	12	75%	—	8%	—
1950s	20	40%	—	20%	10%
1960s	10	60%	—	—	20%
1970s	3	100%	—	—	—
1980s	14	86%	—	—	—
1990s	124	43%	37%	4%	3%
2000s	136	47%	35%	5%	4%
2010s	108	51%	30%	8%	6%
2020s	9	56%	22%	—	11%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
12.Bf1	51%	56%	▲ +4.6%
12.a4	30%	22%	▼ -7.4%
12.d5	8%	0%	▼ -8.3%
12.Bc4	6%	11%	▲ +5.6%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 2 parties
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie
Smyslov, Vladimir — 1 partie
Karpov, Anatoly — 1 partie

Parties historiques

12.Bf1 — 49.7% (223 parties)

1909 — Perlis, Julius vs Freiman, Sergey Nikolaevich — 0-1 — St Petersburg RUS
1909 — Perlis, Julius vs Von Freiman, Sergey — 0-1 — St Petersburg RUS it
1914 — Muffang, Andre vs Lazard, Frederic — 1/2-1/2 — Lyon FRA
1915 — Weinstein, Shaul vs Rabinovich, Ilya Mar — 0-1 — Triberg
1923 — Vitkovsky A vs Mikulka, R. — 0-1 — Pardubice CZE

12.a4 — 28.7% (129 parties)

1912 — Bohatirchuk, Fedor vs Talvik, Eduard — 0-1 — Saratov
1990 — Krzewicki, J. vs Warcholinski Z — 1-0 — corr Poland
1992 — Short, Nigel D vs Anand, Viswanathan — 1-0 — Linares
1992 — Nunn, John D M vs Zilberman, Yaacov — 1/2-1/2 — Londen open
1992 — Hort, Vlastimil vs Brunner, Lucas — 1/2-1/2 — GER

12.d5 — 6.5% (29 parties)

1923 — Tarrasch, Siegbert vs Teichmann, Richard — 1-0 — Carlsbad CZE
1928 — Tarrasch, Siegbert vs Euwe, Max — 1/2-1/2 — Bad Kissingen GER
1939 — Cortlever, Nico vs Keres, Paul — 0-1 — Buenos Aires ARG
1941 — Cortlever, Nico vs Van den Bosch, Johannes — 1/2-1/2 — Leeuwarden NED
1950 — Barendregt, Johan vs Van den Berg, Cees — 1/2-1/2 — Amsterdam ch-NED

12.Bc4 — 4.7% (21 parties)

1956 — Byvshev, Vasily vs Neishtadt, Yakov — 1-0 — Leningrad RUS
1957 — Alexander Ronald Cheng vs Pachman, Ludek — 1/2-1/2 — Dublin IRL
1964 — Moe, Mogens vs Kuettner, Uwe — 1-0 — Krakow POL
1968 — Osnos, Viatcheslav vs Klovans, Janis — 1/2-1/2 — Riga LAT
1990 — ? vs Albert Gideon — 1/2-1/2 — Lyon WMCC

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