C81a — Spanish: Open, Keres Attack

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Avantages : paire de fous, colonne d.
Faiblesses adverses : arriéré c7, Bf8 enfermé, roi noir au centre.
Problèmes : Bc1 enfermé, 3 pièces non développées (B1, C1, A1).
Plans :
● Nbd2 — Développer Nb1
● Be3 — Développer Bc1
● h3 — Empêcher ...Bg4
● Bc2 — Anticiper ...Na5
● Rd — Tour sur colonne d

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Avantages : case forte b4, case forte c5, case forte d5, Be6 actif, paire de fous, colonne e.
Faiblesses adverses : Bc1 enfermé.
Problèmes : roi au centre, Bf8 enfermé, arriéré c7, 3 pièces non développées (F8, A8, H8).
Plans :
● O-O — Mettre le roi en sécurité, connecter les tours
● ...Be7 — Développer Bf8
● ...Bg4 — Clouer Nf3
● ...d4 — Rupture
● ...f6 — Rupture

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

C81a — Open Keres Attack

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2

Eval: [+0.16]

Les coups candidats

9…Be7 — 68.1% (1797 parties) →

Ambassadeurs : ? (16x), Matulovic, Milan (16x), Jansa, Vlastimil (16x), Timman, Jan H (13x), Buj, Pablo (10x), Donner, Jan-Hein (9x), Korchnoi, Viktor (9x), Boleslavsky, Isaac (8x)

9…Bc5 — 14.4% (380 parties) →

Ambassadeurs : Grivas, Efstratios (11x), Simacek, Pavel (7x), Lombart, Philippe (7x), Honfi, Karoly (5x), Honfi, K. (5x), Sobeck, Guenter (5x), ? (5x), Anderson, Frank Ross (4x)

9…Nc5 — 13.0% (342 parties)

Ambassadeurs : Anderson, Frank Ross (9x), Ujtumen, Tudev (9x), Unzicker, Wolfgang (8x), Mamedyarov, Shakhriyar (5x), Girya, Olga (5x), Smyslov, Vladimir (4x), German, Eugenio (4x), Keres, Paul (3x)

9…Na5 — 3.7% (98 parties)

Ambassadeurs : Abrahams, Gerald (2x), Estrada Degrandi, Walter (2x), Bohatyrchuk, Fedir Parfenovych (2x), Neubert, Gerhard (2x), Juricek, Stanislav (2x), Adam, Edmund (1x), Seibold, Matthaus (1x), Malmgren, Harald (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	9…Be7	9…Bc5	9…Nc5	9…Na5
<1800	33	61%	27%	12%	—
1800-2200	473	66%	18%	10%	5%
2200-2600	852	71%	15%	12%	1%
2600+	85	68%	6%	26%	—

Évolution par décennie (% des parties)

Décennie	N parties	9…Be7	9…Bc5	9…Nc5	9…Na5
1900s	2	100%	—	—	—
1930s	3	67%	—	—	33%
1940s	47	30%	11%	32%	21%
1950s	190	45%	13%	32%	9%
1960s	255	61%	18%	16%	4%
1970s	376	76%	10%	9%	4%
1980s	356	81%	10%	6%	2%
1990s	401	74%	18%	4%	3%
2000s	305	69%	21%	8%	3%
2010s	411	65%	16%	14%	3%
2020s	293	65%	9%	25%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
9…Be7	65%	65%	▼ -0.6%
9…Bc5	16%	9%	▼ -7.2%
9…Nc5	14%	25%	▲ +11.6%
9…Na5	3%	1%	▼ -2.7%

Joueurs célèbres

Champions du monde dans cette position

Euwe, Max — 7 parties
Tal, Mikhail — 6 parties
Smyslov, Vladimir — 5 parties
Carlsen, Magnus — 4 parties
Karpov, Anatoly — 2 parties
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Ding, Liren — 1 partie
Anand, Viswanathan — 1 partie
Gukesh D — 1 partie

Parties historiques

9…Be7 — 68.1% (1797 parties)

1903 — Lebedev, Sergey F vs Rabinovich, Abram — 1-0 — Kiev 3rd Russian ch
1903 — Izbinsky, Stefan vs Rubinstein, Akiba — 0-1 — Kiev UKR
1937 — Bauer, Randy vs Chalupetzky — 1/2-1/2 — corresp.
1939 — Adam, Edmund vs Malmgren, Harald — 1/2-1/2 — ?
1940 — Malmgren, Harald vs Brynhammar Hilding — 1-0 — ?

9…Bc5 — 14.4% (380 parties)

1947 — Sahlmann, Walter vs Roedl, Ludwig — 0-1 — Weidenau
1948 — Pilnik, Herman vs Garcia Balado L — 1-0 — Buenos Aires/La Plata
1949 — Aitken, James vs Durham, Daniel — 1-0 — London ENG
1949 — Znosko-Borovsky, Eugene vs Unzicker, Wolfgang — 0-1 — Lucerne SUI
1949 — Ivkov, Borislav vs Fuderer, Andrija — 0-1 — Yugoslavia

9…Nc5 — 13.0% (342 parties)

1946 — Stoltz, Gösta vs Cortlever, Nico — 1/2-1/2 — Zaandam
1947 — Gray, Sydney vs Anderson, Frank Ross — 0-1 — Toronto CAN
1947 — De Carbonnel, Heinz vs Unzicker, Wolfgang — 0-1 — Munich GER
1947 — Smyslov, Vladimir vs Sokolsky, Alexey — 1-0 — Moscow Chigorin mem
1947 — Keres, Paul vs Alatortsev, Vladimir N. — 1-0 — Leningrad ch-URS

9…Na5 — 3.7% (98 parties)

1938 — Adam, Edmund vs Seibold, Matthaus — 1-0 — corr 1938-39
1940 — Malmgren, Harald vs Gavelin, Knuth — 1-0 — ?
1940 — Kohler Rosa, Tony Denis vs Gilg, Karl — 1-0 — Krakow POL
1947 — Tomovic, Vasilje vs Bozic, Aleksandar — 1-0 — Yugoslavia
1948 — Alexander, Conol Hugh vs Abrahams, Gerald — 1-0 — London, Bishopsgate

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	● c7
Chaînes	—	● a6→b5
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● c5 (2v0), ● d5 (2v1)
Cases faibles	● c4	● g5
Centre	—	● d5 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● d	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Bb3	● Bb3 Ok (mob. 3)
Be6		● Be6 Actif (mob. 5)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (b1, c1, a1)	3 (f8, a8, h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	semi-ouvert
Ruptures	● c2-c3	● …d5-d4, ● …f7-f6, ● …f7-f5

Partie
1940 Krakow – Round 1 – Kohler Rosa, Tony Denis – 1-0 – Gilg, Karl – G2 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nbd2 Nxd2
1946 Staunton, Groningen NED – Round 1 – Stoltz, Gosta – 0-1 – Szabo, Ladislav – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Bd6 10. Nbd2 Nc5
1947 Leningrad ch-URS – Round 14 – Keres, Paul – 1-0 – Alatortsev, Vladimir N. – G133 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1948 GBR Ch 35th – Round 1 – Alexander, Conol Hugh – 1-0 – Abrahams, Gerald – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nd4 Bc5
1948 GBR Ch 35th – Round 3 – Thomas, George Alan – 1-0 – Abrahams, Gerald – G10 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Rd1 Be7
1948 Hastings4849 – Round 2 – Bellod Thomas, Gonzalo – 1/2-1/2 – Wade, Robert G – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 g5 10. c4 g4
1948 Saltsjobaden Interzonal – Round 12 – Boleslavsky, Isaac – 1-0 – Stoltz, Gabriel – G113 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 g5 10. c4 bxc4
1948 Saltsjobaden tt – Round 1 – Skold, Kristian – 1/2-1/2 – Kongshavn, Harry – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nd4 Nxb3
1948 Venice – Round 1 – Lokvenc, Josef – 1/2-1/2 – Euwe, Max – G66 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1948 World Championship 18th – Round 19 – Smyslov, Vladimir – 1-0 – Euwe, Max – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1948 World Championship 18th – Round 21 – Smyslov, Vladimir – 1/2-1/2 – Reshevsky, Samuel – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 b4
1949 CAN Ch Arvida – Round 8 – Fox, Maurice – 1/2-1/2 – Andersen, Borge – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1949 Gambit CC Ch – Round 3 – Greenberg, Joe – 0-1 – Anderson, Frank Ross – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1950 Corr – Round 1 – Barda, Olaf – 1/2-1/2 – Malmgren, Adrian – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1950 Venice – Round 12 – Smyslov, Vladimir – 1-0 – Abadia Castillo, Mateo – G100 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 b4
1951 BRA Ch – Round 8 – Lemos, Jorge Joao – 0-1 – German, Eugenio – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1951 Bucharest GMT 2nd – Round 6 – Pietzsch, Wolfgang – 1/2-1/2 – Urseanu, Veniamin – G26 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1951 Toronto Ch finals – Round 9 – Siemms, Ross E – 0-1 – Anderson, Frank Ross – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1951 Vancouver – Round 1 – Bohatyrchuk, Fedir Parfenovych – 0-1 – Divinsky, Nathan – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nbd2 Nxd2
1951 Vancouver – Round 1 – Yanofsky, Daniel Abraham – 0-1 – Andersen, Borge – G18 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1952 Belgrade – Round 15 – Bogdanovic, Rajko – 0-1 – Fuderer, Andrija – G27 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1952 JUG Ch – Round 15 – Djurasevic, Bozidar – 1/2-1/2 – Trifunovic, Petar – G96 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1952 Liverpool – Round 4 – Bronstein, David I – 1-0 – Katragadda, G. – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1952 Mar del Plata – Round 13 – Budowski, Gerardo – 0-1 – German, Eugenio – G96 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1952 Saltsjobaden Interzonal – Round 18 – Pilnik, Herman – 1-0 – Unzicker, Wolfgang – G171 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1954 Mar del Plata – Round 15 – Benko, Francisco – 0-1 – Estrada Degrandi, Walter – G116 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Rd1 c6
1955 Ljubljana – Round 6 – Karaklajic, Nikola – 1/2-1/2 – Krivec Slavko – G51 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1956 Denmark ch corr – Round ? – Stoltze, Kurt – 1/2-1/2 – From, Sigfred – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1956 URS Ch, semi final – Round 17 – Kotkov, Yuri – 1-0 – Gurgenidze, Bukhuti – G114 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1957 CSR Ch – Round 4 – Pachman, Ludek – 1-0 – Koska, Josef – G16 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nd4 Qd7
1957 Danmarksmesterskabet – Round 4 – Pedersen, Eigil – 1-0 – Norman Hansen, Holger – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nd4 Qh4
1957 Reykjavik – Round 4 – Johannsson, Ingi R – 1/2-1/2 – Pilnik, Herman – G31 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 b4
1957 Sombor – Round 12 – Milic, Borislav – 1/2-1/2 – Karaklajic, Nikola – G121 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Bg5 Be7
1958 Buenos Aires V – Round 1 – Rossetto, Hector – 1-0 – Estrada Degrandi, Walter – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1958 Mar del Plata – Round 12 – Panno, Oscar – 1/2-1/2 – Sumar, Julio – G90 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1959 Berlin Ch – Round 6 – Darga, Klaus – 1-0 – Lohsse, Hans Peter – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1959 Buenos Aires Ch – Round 11 – Bartis, Gustavo – 0-1 – Piazzini, Luis – G46 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nbd2 Nxd2
1959 CSR Ch – Round 12 – Blatny, Frantisek – 1-0 – Augustin, Josef – G96 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1959 Zuerich – Round 1 – Nievergelt, Erwin – 1/2-1/2 – Bhend, Edwin – G57 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Rd1 Be7
1961 Moscow Ch – Round ? – Ignatiev, Felix N – 1/2-1/2 – Khasin, Abram – G103 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1961 URU Ch sf – Round ? – Kaszdan Ernesto – 0-1 – Estrada Degrandi, Walter – G9 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nd4 Bc5
1962 Erevan ch-URS – Round 1 – Novopashin, Arkady – 1-0 – Zaitsev, Alexander – G128 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1962 Hastings II – Round 2 – Brinck-Claussen, Bjorn – 1/2-1/2 – Aabel Thomas Eapen – G4 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1962 Varna olm – Round 8 – Cobo Arteaga, Eldis – 1-0 – Capilla Murphy, Serena – G372 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Na5 10. Nd4 Nxb3
1964 Pecs – Round 7 – Gipslis, Aivars – 1-0 – Haag, Ervin – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1964 Tel Aviv olm – Round 1 – Kuijpers, Frans – 1-0 – Myagmarsuren, Lkhamsuren – G102 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1964 Tel Aviv olm prel – Round 3 – Cuijpers, Frans Andre – 1-0 – Myagmarsuren, Lkhamsuren – G28 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1964 WchT U26 11. fin-A – Round 11.3 – Jansa, Vlastimil – 1-0 – Zorigt, Damdzinhav – G199 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1964 WchT U26 11. fin-A – Round 9.3 – Seuss, Oswald – 0-1 – Ujtumen, Tudev – G159 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1965 Capablanca Memorial – Round 13 – Ivkov, Borislav – 1-0 – Donner, Jan-Hein – G135 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1965 Chigorin Memorial – Round 13 – Jansa, Vlastimil – 1-0 – Ujtumen, Tudev – G64 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1965 Mar del Plata – Round 11 – Sanguinetti, Ricardo – 1-0 – Palermo, Vicente – G89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1965 Marianske Lazne – Round 6 – Hort, Vlastimil – 1/2-1/2 – Pachman, Ludek – G30 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1967 Maribor – Round 8 – Matulovic, Milan – 1/2-1/2 – Unzicker, Wolfgang – G11 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Be7
1969 San Juan – Round 13 – Kavalek, Lubomir – 0-1 – Kaplan, Julio – G89 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 a6 6. Ba4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
1969 Zalaegerszeg – Round 1 – Nikolic, Stanimir – 1-0 – Gesos, Pavlos – G8 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Na5
1970 Palma de Mallorca Interzonal – Round 2 – Matulovic, Milan – 0-1 – Ujtumen, Tudev – G209 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
4. Sinquefield Cup 2016 – Round 9.5 – Caruana, Fabiano – 1-0 – Giri, Anish – G45 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
42. Olympiad 2016 – Round 6.7 – Perez Ponsa, Federico – 0-1 – Ding, Liren – G455 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
43. Olympiad 2018 – Round 7.9 – Bellahcene, Bilel – 1/2-1/2 – Anton Guijarro, David – G493 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Rd1 Nxb3
GCT Rapid Paris 2017 – Round 5.4 – Caruana, Fabiano – 0-1 – Mamedyarov, Shakhriyar – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Nc5 10. Nc3 Nxb3

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