C65q — Spanish: Berlin, Beverwijk, 5.Nxe5

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.Nxe5 * ● Trait aux Noirs

Ouverture — Centre semi-ouvert

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Atouts. Les Blancs s'appuient sur une majorité de pions à l'centre (2 contre 1), les cases fortes c4 et g4, un fou actif en b5 et la paire de fous.

Côté adverse. Le fou enfermé en c8 et le roi resté au centre.

En contrepartie. Plusieurs pièces dorment encore (le cavalier b1, le fou c1 et la tour a1).

Plans. Nbd2 (Développer Nb1) ; d3 (Libérer Bc1) ; c3 (Préparer d4).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Atouts. Les Noirs s'appuient sur les cases fortes b4 et d4, un fou actif en c5, la paire de fous et la colonne semi-ouverte e.

Côté adverse. Le fou enfermé en c1 et des pièces en prise (le pion en e4 et le cavalier en e5).

En contrepartie. Le roi n'est pas encore à l'abri et plusieurs pièces dorment encore (le fou c8 et les tours a8 et h8).

Plans. O-O (Mettre le roi en sécurité, connecter les tours) ; ...d6 (Libérer Bc8) ; ...d5 (Rupture) ; Tour sur colonne e.

Avantages

Faiblesses adverses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	● centre 2v1	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● c4 (2v0), ● g4 (2v1)	● b4 (2v0), ● d4 (2v0)
Cases faibles	—	—
Centre	—	● d4 (2v0), ● e4 (1v0), ● e5 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	—	● e

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Bb5	● Bb5 Actif (mob. 6)
Bc5		● Bc5 Actif (mob. 9)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Clouages	● pawn f2	—
Non développées	3 (b1, c1, a1)	3 (c8, 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, ● d2-d3, ● f2-f3	● …d7-d6, ● …d7-d5

Partie
1902 Monte Carlo – Round 1 – D Marco, Gianni – 1-0 – Mortimer, James – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 a6 7. Ba4 Qe7 8. dxc5 Qxc5 9. Nc3 b5 10. Bb3 Bb7
1904 London ENG – Round 13 – Leonhardt, Paul – 1-0 – Mortimer, James – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 Bb6 7. dxe5 Nxe4 8. Qg4 Nxf2 9. Rxf2 Bxf2+ 10. Kxf2 Qe7
1940 Copenhagen KS – Round 1 – Norman Hansen, Holger – 0-1 – Nielsen, Julius – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Nd3 Be7 7. Nc3 Nd6 8. Ba4 O-O 9. Nf4 Nf5 10. Ncd5 Bg5
1946 Hoogovens – Round 1 – De Groot, Adriaan – 1-0 – O'Kelly, Albéric de Galway – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. Qf3 Qh4 10. g3 Ng5
1946 Hoogovens – Round 9 – Vlagsma, Chris – 0-1 – O'Kelly, Albéric de Galway – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Re1+ Be6
1947 Hilversum zt – Round 8 – Tsvetkov, Alexandar K – 1/2-1/2 – Alexander Ronald Cheng – G21 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. Bxe4 dxe4 10. Qxd8+ Kxd8
1947 Yugoslavia Ch – Round 8 – Bidev, Pavle – 1-0 – Kostic, Boris – G41 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. Be2 Be7 8. dxe5 Nxe4 9. Qd4 f5 10. Bh5+ g6
1948 Mar del Plata – Round 14 – Michel, Pascal – 1/2-1/2 – O'Kelly de Galway, Alberic – G117 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Qe2+ Be6
1950 Schiavno Zdroj – Round 1 – Foltys, Jan – 1/2-1/2 – Barcza, Gedeon – G109 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. c3 Ng6 9. Qf3 O-O 10. d4 Bb6
1952 Helsinki olm – Round 1 – Pfeiffer, Gerhard – 1/2-1/2 – Pachman, Ludek – G154 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Bxc6 dxc6 7. Qe2 Qd5 8. Nd3 O-O 9. Nxc5 Nxc5 10. Nc3 Qf5
1952 Moskou ch-URS – Round 1 – Aronin, Lev – 1/2-1/2 – Keres, Paul – G136 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Bf4 Bxd6
1952 Rio de Janeiro – Round 17 – Mangini, Jose Henrique de Mello – 1/2-1/2 – Dantas, Nelson – G96 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. Nc3 Ng6 9. Re1 c6 10. d4 Qxe4
1953 Opatija – Round 5 – Milic, Borislav – 1/2-1/2 – Beni, Alfred – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Be7 8. Qxe4 Ng6 9. f4 c6 10. Bd3 d5
1953 Wch-jr final – Round 1 – Ivkov, Borislav – 1-0 – Keller, Dieter – G3 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Bg5 h6
1957 Leningrad Ch – Round 17 – Suetin, Alexey S – 1/2-1/2 – Antoshin, Vladimir S – G131 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Ng6 9. Qd3 Bb6 10. c4 c6
1959 Skittles – Round ? – Blackstone, John – 1-0 – Foley, Donald – G43 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 Nxe4 7. dxc5 O-O 8. Re1 d5 9. f3 Qe7 10. Qxd5 Rd8
1959 Tbilisi ch-URS – Round 6 – Krogius, Nikolai V – 0-1 – Spassky, Boris V. – G49 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Qe2+ Be6
1960 Leningrad ch-URS – Round 3 – Krogius, Nikolai V – 1/2-1/2 – Spassky, Boris Vasily – G28 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Ng6 9. Qxe7+ Bxe7 10. Nc3 O-O
1960 Skittles – Round ? – Blackstone, John – 1-0 – Norris, Jacob Eugene – G28 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 O-O 6. Nd3 Nxe4 7. Nxc5 Nxc5 8. d4 Ne4 9. Qf3 Nxd4 10. Qxe4 Nxb5
1961 Belgrade Open Belgrade YUG – Round 11 – Matanovic, Aleksandar – 1/2-1/2 – Forintos, Gyozo V – G24 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Nc6 9. Qxe7+ Bxe7 10. c3 d5
1962 Hungary – Round 7 – Ozsvath, Andras – 0-1 – Forintos, Gyozo V – G57 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Qe7 8. dxe5 Qxe5 9. Nc3 f5 10. Bc4 c6
1962 Moscow RUS – Round 1 – Shamkovich, Leonid – 1-0 – Aronin, Lev – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Bg5 Qxd6
1963 Leningrad ch-URS – Round 1 – Zakharov, Alexander V – 1-0 – Suetin, Alexey S – G114 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Qe7 8. Qxe4 Nc6 9. Qxe7+ Bxe7 10. c3 a6
1963 Zenica ch YUG – Round 21 – Velimirovic, Dragoljub – 1/2-1/2 – Parma, Bruno – G119 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 Ng5 9. Nc3 d5 10. exd6 Bxd6
1964 1. division -65 – Round 5.5 – Sorensen, Tage – 0-1 – Haahr, Thorkild – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nd4 6. Bc4 d6 7. Nf3 Bg4 8. Be2 Nxe2+ 9. Qxe2 O-O 10. d3 Nd7
1964 ESP Ch 29th – Round 12 – Puig, Pedro – 1/2-1/2 – Sicilia Pardo, Jaime – G49 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Nd2 O-O
1964 EU Team Ch sf – Round 1.1 – Tringov, Georgi P – 1/2-1/2 – Ghitescu, Theodor – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 Nxe4 7. Qe2 Qe7 8. Qxe4 Nc6 9. Qxe7+ Bxe7 10. c3 O-O
1964 Tel Aviv olm fin-B – Round 8 – Dueckstein, Andreas – 1-0 – Myagmarsuren, Lkhamsuren – G97 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 O-O 6. Nd3 Nxe4 7. Nxc5 Nxc5 8. d4 Ne4 9. d5 Ne7 10. Re1 Nf6
1965 Santiago – Round 1 – Bielicki, Carlos – 1/2-1/2 – Schroeder, Raik – G14 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Qe2+ Be6
1966 WchTJ U26 fin-A – Round 7 – Schoeneberg, Manfred – 1/2-1/2 – Ghizdavu, Dumitru – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Bxc6 dxc6 7. Qe2 Qd5 8. Nd3 O-O 9. Nxc5 Nxc5 10. Nc3 Qf5
1968 Lugano olm - Round 1 - Cordovil, Joao - 1-0 - Casa, Alex - G271 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 c6 7. dxe5 Nxe4 8. Bd3 d5 9. exd6 Nf6 10. Nc3 Bxd6
1968 The Hague – Round 1 – Westerinen, Heikki M.J. – 1-0 – Van Geet, Dirk Daniel – G2 1. e4 Nc6 2. Nf3 e5 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Nc6 9. Qxe7+ Bxe7 10. c3 O-O
1969 Amsterdam AMRO Open – Round ? – Krabbe, Tim – 1/2-1/2 – Zuidema, Coen – G12 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe5 6. d4 Nxe4 7. Qe2 Be7 8. Qxe4 Ng6 9. f4 c6 10. Bd3 d5
1969 Leeuwarden ch-NED – Round 2 – Scholl, Eddie C – 1/2-1/2 – Zuidema, Coen – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Be7 8. dxe5 Nc5 9. Rd1 c6 10. Bc4 b5
Amber-rapid 18th 2009 – Round 9 – Anand, Viswanathan – 1/2-1/2 – Topalov, Veselin – G32 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. Nc3 Ng6 9. Qxe7+ Bxe7 10. Nd5 c6
FIDE WCh KO 2000 – Round 6.1 – Shirov, Alexei – 1-0 – Grischuk, Alexander – G124 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Be7 8. Qxe4 Ng6 9. f4 c6 10. Bd3 d5
FIDE-Wch k.o. 1999 – Round 1.2 – Reinderman, Dimitri – 1/2-1/2 – Gulko, Boris – G23 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. Nc3 Ng6 9. Qxe7+ Kxe7 10. Re1+ Kd8
Linares 1993 – Round 13 – Timman, Jan H – 0-1 – Beliavsky, Alexander G – G35 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 a6 7. dxe5 axb5 8. exf6 Qxf6 9. Nc3 c6 10. Qd3 O-O
Manila Interzonal 1990 – Round 7 – Cabrilo, Goran – 1/2-1/2 – Gulko, Boris – G124 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Nc6 9. Qxe7+ Bxe7 10. c3 a6
PCA Qualifiers 1993 – Round 6 – Rozentalis, Eduardas – 1-0 – Polgar, Susan – G111 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe5 6. d4 a6 7. dxe5 axb5 8. exf6 Qxf6 9. Nc3 c6 10. Be3 Bxe3
Sarajevo 1972 – Round 8 – Keres, Paul – 1/2-1/2 – Basagic, Zlatko – G17 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Be7 8. dxe5 Nc5 9. Qg4 O-O 10. Bh6 Ne6
SuperGM 2000 – Round 6 – Adams, Michael – 1/2-1/2 – Leko, Peter – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. Nc3 Ng6 9. Qxe7+ Nxe7 10. Ne4 Bb6
Tal Memorial 2009 – Round 2 – Svidler, Peter – 1/2-1/2 – Ivanchuk, Vasyl – G6 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Nc6 9. Qg4 h5 10. Qxg7 Bxd4
XVI Ciudad de Linares 99 1999 – Round 12 – Ivanchuk, Vasyl – 1/2-1/2 – Leko, Peter – G34 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. d4 Be7 8. dxe5 Nc5 9. Bf4 O-O 10. Nc3 c6
XXVII SuperGM 2010 – Round 7 – Gashimov, Vugar – 1/2-1/2 – Topalov, Veselin – G19 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nxe5 Nxe4 6. Qe2 Nxe5 7. Qxe4 Qe7 8. d4 Nc6 9. Qg4 h5 10. Qg3 Bxd4

C65q — Berlin Beverwijk

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.Nxe5

Eval: [+0.51]

Les coups candidats

5…Nxe5 — 59.3% (971 parties)

Ambassadeurs : Ovod, Evgenija (10x), Winants, Luc (9x), Krol, Wladyslaw (7x), Gulko, Boris (6x), Ionescu, Constantin (6x), Abramovic, Bosko (5x), De La Paz Perdomo, Frank (5x), McMahon, Daire (5x)

5…Nxe4 — 32.3% (528 parties)

Ambassadeurs : Gulko, Boris (8x), Ovod, Evgenija (8x), Knezevic, Milorad (6x), De La Paz Perdomo, Frank (6x), Nogal, Jan (6x), Semcesen, Daniel (6x), Nabaty, Tamir (6x), Ledezma Álvarez, José M. (5x)

5…O-O — 4.5% (73 parties)

Ambassadeurs : Selby, Robin (2x), Krivosheya, Dmitrij (2x), ? (1x), Poschauko, Karl (1x), Dueckstein, Andreas (1x), Myagmarsuren, Lkhamsuren (1x), Wagner, Carl E (1x), Stachowitz, Rolle (1x)

5…Nd4 — 2.1% (34 parties)

Ambassadeurs : ? (2x), Gradowski, Guenter (2x), Fahrbach, Manfred (2x), Amos, Frank (2x), Koenig, Imre (1x), Van Scheltinga, Theo (1x), Szirti, Almos (1x), Gladhill (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	5…Nxe5	5…Nxe4	5…O-O	5…Nd4
<1800	92	70%	17%	7%	—
1800-2200	459	61%	28%	7%	2%
2200-2600	576	57%	41%	1%	1%
2600+	24	25%	67%	4%	4%

Évolution par décennie (% des parties)

Décennie	N parties	5…Nxe5	5…Nxe4	5…O-O	5…Nd4
1890s	1	100%	—	—	—
1900s	3	100%	—	—	—
1920s	2	50%	—	50%	—
1930s	4	75%	—	—	25%
1940s	9	89%	11%	—	—
1950s	17	29%	65%	—	6%
1960s	34	35%	53%	9%	3%
1970s	51	16%	80%	2%	—
1980s	108	66%	31%	2%	—
1990s	275	72%	20%	3%	3%
2000s	461	59%	31%	6%	2%
2010s	581	58%	34%	4%	2%
2020s	91	56%	31%	10%	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
5…Nxe5	58%	56%	▼ -2.1%
5…Nxe4	34%	31%	▼ -3.0%
5…O-O	4%	10%	▲ +6.1%
5…Nd4	2%	0%	▼ -2.2%

Joueurs célèbres

Champions du monde dans cette position

Lasker, Emanuel — 2 parties
Anand, Viswanathan — 2 parties

Parties historiques

5…Nxe5 — 59.3% (971 parties)

1896 — Suechting, Hugo vs Hirschler, Hermann — 1-0 — Eisenach
1902 — Von Bardeleben, Curt vs Lebedev Soler, Andrei — 0-1 — St Petersburg RUS
1902 — D Marco, Gianni vs Mortimer, James — 1-0 — Monte Carlo MNC
1904 — Leonhardt, Paul vs Mortimer, James — 1-0 — London ENG
1925 — Wakefield, Willington Lucette vs Schofield, Alexander — 1-0 — Scarborough ENG

5…Nxe4 — 32.3% (528 parties)

1940 — Norman Hansen, Holger vs Nielsen, Julius — 0-1 — Copenhagen DEN
1950 — Foltys, Jan vs Barcza, Gedeon — 1/2-1/2 — Schiavno Zdroj
1950 — Beach, T John vs Phillips, Alan — 0-1 — Buxton
1950 — Keres, Paul vs Szabo, Laszlo — 1/2-1/2 — Budapest HUN
1950 — Keres, Paul Petrovich vs Szabo, Laszlo — 1/2-1/2 — Wch candidates

5…O-O — 4.5% (73 parties)

1921 — ? vs Poschauko, Karl — 1/2-1/2 — Vienna AUT
1960 — Blackstone, John vs Norris, Jacob Eugene — 1-0 — San Jose, CA USA
1964 — Dueckstein, Andreas vs Myagmarsuren, Lkhamsuren — 1-0 — Tel Aviv ISR
1964 — Wagner, Carl E vs Stachowitz, Rolle — 1-0 — Los Angeles, CA USA
1978 — Hamers, Wim vs Van der Nat, Nicholas — 0-1 — corr NLD/M

5…Nd4 — 2.1% (34 parties)

1938 — Koenig, Imre vs Van Scheltinga, Theo — 1-0 — Hastings ENG
1956 — Szirti, Almos vs Gladhill — 0-1 — New South Wales
1964 — Sorensen, Tage vs Haahr, Thorkild — 0-1 — ?
1992 — Kossobudzki, Robert vs Kepinski Jerzy — 1-0 — cr.
1992 — Lepre Diaz, Sebastian vs Kaehr — 1-0 — cr.