Archives des C78a - 5.O-O - Spanish: [+0.31]

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C78a — Spanish:

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O

Eval: [+0.31]

Les coups candidats

Ambassadeurs : ? (442x), Romanishin, Oleg M (359x), Adams, Michael (341x), Simmelink, Joop Theo (312x), Langer, Raimund (311x), Geller, Efim P. (310x), Sherwood, Russell (291x), Beliavsky, Alexander G (282x)

5…b5 — 17.8% (40228 parties) →

Ambassadeurs : Parushev, Alexandar Miroslavovich (147x), Volodarsky, Yury Aleksandrovich (139x), Shirov, Alexei (137x), Godena, Michele (131x), Herzog, Klaus (129x), Dunlop, Gordon (106x), ? (88x), Firnhaber, Ingo (79x)

5…Nxe4 — 11.1% (25039 parties) →

Ambassadeurs : Pott, Brian (119x), Mikhalevski, Victor (114x), Lombart, Philippe (104x), Klewe, Wolfgang (101x), Korchnoi, Viktor (100x), Armani, Giuseppe (99x), ? (86x), Korneev, Oleg (85x)

5…Bc5 — 2.2% (5072 parties) →

Ambassadeurs : Onischuk, Alexander (54x), Lanin, Boris Dr (50x), Stefanova, Antoaneta (39x), Malaniuk, Vladimir P (38x), Hector, Jonny (30x), Adams, Michael (24x), Carlstedt, Jonathan (24x), Grazinys, Vidmantas (23x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5…Be7	5…b5	5…Nxe4	5…Bc5
<1800	5977	55%	28%	9%	3%
1800-2200	63706	63%	22%	10%	2%
2200-2600	95321	72%	15%	9%	2%
2600+	8154	74%	10%	11%	4%

Évolution par décennie (% des parties)

Décennie	N parties	5…Be7	5…b5	5…Nxe4	5…Bc5
0s	2	50%	—	50%	—
1790s	1	100%	—	—	—
1850s	9	44%	33%	22%	—
1860s	43	51%	9%	37%	2%
1870s	85	18%	5%	73%	—
1880s	104	14%	6%	73%	2%
1890s	185	15%	6%	63%	1%
1900s	780	58%	3%	22%	2%
1910s	715	45%	7%	36%	1%
1920s	839	51%	5%	28%	4%
1930s	835	51%	7%	23%	6%
1940s	1638	57%	8%	25%	2%
1950s	3562	69%	10%	16%	1%
1960s	6880	75%	10%	12%	1%
1970s	7277	70%	12%	15%	1%
1980s	12260	67%	12%	19%	1%
1990s	28284	62%	20%	14%	2%
2000s	55545	64%	20%	11%	3%
2010s	81876	70%	19%	7%	2%
2020s	25217	65%	16%	11%	4%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5…Be7	70%	65%	▼ -5.8%
5…b5	19%	16%	▼ -2.5%
5…Nxe4	7%	11%	▲ +4.1%
5…Bc5	2%	4%	▲ +2.7%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 10 parties
Alekhine, Alexander — 10 parties
Euwe, Max — 10 parties
Botvinnik, Mikhail — 10 parties
Smyslov, Vladimir — 10 parties
Tal, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Karpov, Aleksandr — 10 parties
Anand, Viswanathan — 10 parties
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Hou, Yifan — 10 parties
Ding, Liren — 10 parties
Gukesh D — 10 parties
Ju, Wenjun — 7 parties
Steinitz, Wilhelm — 3 parties
Fischer, Robert James — 2 parties

Parties historiques

5…Be7 — 66.6% (150706 parties)

3 — Efimov, Albert Nikolaevich vs Garau, Bernard — 0-1 — IECC
1792 — Morris, Bruce vs Barroso Law, Wildried — 1-0 — ?
1859 — Morphy, Paul vs Cattley — 1-0 — London ENG
1859 — Campbell - Joseph vs Wormald, Robert Bownas — 1-0 — London ENG
1859 — Journoud, Paul C vs Arnous de Riviere, Jules — 0-1 — Paris m2 Paris FRA

5…b5 — 17.8% (40228 parties)

1859 — Loewenthal, Johann vs Morphy, Paul — 1-0 — London m1 London ENG
1859 — Von Eynatten vs Suhle, Berthold — 0-1 — Wesel
1859 — Journoud vs Blondel Riviere, Axel — 1-0 — Paris FRA
1860 — Maude, P. vs Kolisch, I. — 0-1 — Londen m
1860 — Boden, Samuel S vs Harrwitz, Daniel — 0-1 — London ENG

5…Nxe4 — 11.1% (25039 parties)

2 — Efimov, Albert Nikolaevich vs Llorente Alvarez, Jose Luis — 1/2-1/2 — IECC
1854 — Loewenthal, Johann vs Brien, Jan — 1-0 — London ENG
1854 — Lowenthal vs Brien Wormald — 1-0 — London ENG
1864 — Blackburne, Joseph vs Falkbeer, Ernst — 1-0 — London ENG
1865 — Rosenthal, Samuel vs Schmidt, Eckhard, Dr. — 1-0 — Leipzig GER

5…Bc5 — 2.2% (5072 parties)

1864 — N Charvik Nandan vs Grimm, Adrian — 0-1 — Konstantinopel
1884 — Sherrard, Hugh William vs Seward, Harold — 1/2-1/2 — St Georges CC
1889 — Gossip, George vs MacLeod, Nicholas — 0-1 — New York, NY USA
1891 — Rogers, Howard J vs Blackmar, Armand Edward — 1/2-1/2 — Skaneateles
1891 — Kemeny, Emil vs Blackmar, Armand Edward — 1-0 — Skaneateles

Partie
1944 NSW Ch – Round 1 – Steiner, Lajos – 1-0 – Acevedo Harrison, Jose E. – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O a6 5. Ba4 h6 6. d4 b5 7. Bb3 Na5 8. Bxf7+ Kxf7 9. dxe5 d6 10. exf6 gxf6

1944 NSW Ch – Round 1 – Steiner, Lajos – 1-0 – Acevedo Harrison, Jose E. – G1