A28h - 4.e3 Bb4 - Four Knights (1906)

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A28h — Four Knights (1906)
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4
Les coups candidats
Ambassadeurs : Jørgensen, Brian Jørgen (27x), Suba, Mihai (26x), Moujan, Pablo Miguel (24x), Bishop, William (23x), Ellis, James (20x), Bishop, Nicholas (19x), Timman, Jan H (19x), Lanzani, Paolo (18x)
5.Nd5 — 8.5% (552 parties)
Ambassadeurs : Flores, Diego (9x), McNab, Colin A (7x), Maghsoodloo, Parham (7x), Sunye Neto, Jaime (6x), Gunnarsson, Arnar (6x), Miles, Anthony J (5x), Andreasen, Per Naesby (4x), Kindermann, Stefan (3x)
5.d4 — 2.7% (174 parties)
Ambassadeurs : Sitorus, Yosua (6x), Willmann, Bernd (4x), Christopher, David (4x), Hatsek, Werner (4x), Stancl, Vladimir (4x), Sifré Calafat, Francisco (3x), Reede, Arvo (3x), Luzar, Bohumír (3x)
5.Qb3 — 1.5% (100 parties)
Ambassadeurs : Banas, Jan (30x), Mihalik, Marek (3x), Short, Nigel D (3x), Korchnoi, Viktor (2x), Hartereau, Philippe (2x), Bosboom, Manuel (2x), Polak, Tomas (2x), Anay Barche (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.Qc2 5.Nd5 5.d4 5.Qb3
<1800 308 79% 6% 7% 1%
1800-2200 2016 84% 7% 5% 1%
2200-2600 3097 88% 9% 1% 2%
2600+ 256 88% 11% — 1%
Évolution par décennie (% des parties)
Décennie N parties 5.Qc2 5.Nd5 5.d4 5.Qb3
1950s 11 55% 27% 9% —
1960s 35 43% 29% 6% 11%
1970s 270 89% 8% 1% 0%
1980s 439 80% 16% 0% 3%
1990s 701 72% 19% 2% 3%
2000s 1052 81% 10% 2% 2%
2010s 2609 88% 5% 4% 1%
2020s 1361 90% 6% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.Qc2 88% 90% ▲ +2.3%
5.Nd5 5% 6% +0.5%
5.d4 4% 2% ▼ -2.4%
5.Qb3 1% 1% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Ding, Liren — 9 parties
Karpov, Anatoly — 7 parties
Carlsen, Magnus — 5 parties
Kasparov, Garry — 4 parties
Anand, Viswanathan — 3 parties
Tal, Mikhail — 1 partie
Smyslov, Vladimir — 1 partie
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
5.Qc2 — 84.6% (5481 parties)
1951 — Heinicke, Herbert vs Bogoljubow, Efim — 0-1 — Augsburg GER
1952 — Filip, Miroslav vs Potucek, Ludovit — 1-0 — Tatranska ch CZE
1954 — Antonio Molina, Zayra Angelina vs Tikovsky, Augustin — 0-1 — Jablonec nad Nisou
1957 — Feuerstein, Arthur vs Elter, Sophia — 1/2-1/2 — New York, NY USA
1957 — Blacher, Fernand vs Saint-Germain, Gaston de — 1-0 — ?
5.Nd5 — 8.5% (552 parties)
1953 — Borodin, Vladimir vs Lemaire, Robert — 0-1 — Antwerp BEL
1958 — Lange, Svend vs Jensen, Erik Bartram — 0-1 — Copenhagen DEN
1959 — Koberl, Ferenc vs Lengyel, Levente — 1/2-1/2 — Budapest HUN
1960 — Nei, Iivo vs Smyslov, Vasily — 1/2-1/2 — Leningrad ch-URS
1960 — Hansen, Arne vs From, Sigfred — 0-1 — Denmark ch corr
5.d4 — 2.7% (174 parties)
1959 — Matulovic, Milan vs Ivkovic, Dusan — 1-0 — Kragujevac ch14-YUG
1961 — Kestler, Hans-Guenther vs Unzicker, Ferdinand, Dr. — 1/2-1/2 — Bad Pyrmont GER
1965 — Bobotsov, Milko G vs Flohr, Salo — 1/2-1/2 — Noordwijk
1974 — Garcia , Gandy vs Vaganian, Rafael A — 0-1 — Hastings ENG
1974 — Garcia Martinez, Silvino vs Vaganian, Rafael A — 0-1 — Hastings ENG
5.Qb3 — 1.5% (100 parties)
1964 — Speer, Albrecht vs Bachmann, Karlheinz — 1-0 — It Detmold GER
1968 — Anay Barche vs Haag, Ervin — 1/2-1/2 — HUN
1968 — Korchnoi, Viktor vs Lehmann, Karl-Heinz — 1-0 — Palma de Majorca ESP
1968 — Korchnoi, Viktor vs Lehmann, Heinz — 1-0 — Palma de Majorca ESP
1975 — Rodriguez R, Luis Jose vs Enklaar, Bert — 0-1 — Amsterdam NED