C51m — Evans Gambit Declined, Showalter Variation

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4 a6 6.Nc3 * ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. Nd5 (Cavalier centralisé en d5 — 77 % des parties) ; O-O (Mettre le roi en sécurité, connecter les tours — 12 % des parties) ; d4 (Occuper le centre — 5 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...Nf6 (Développer g8 — 78 % des parties) ; ...d6 (Libérer Bc8 — 21 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b7→a6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● d5 (3v0)	● d4 (3v1)
Cases faibles	—	—
Centre	● d5 (3v0), ● e4 (1v0)	● d4 (3v1)

Colonnes et diagonales

♔ Blancs

♚ Noirs

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 2)
Bc4	● Bc4 Actif (mob. 10)
Bb6		● Bb6 Actif (mob. 6)
Bc8		● Bc8 Non développé (mob. 0)
Paire de fous	● Oui	● Oui
Non développées	3 (● c1, ● a1, ● h1)	4 (● g8, ● c8, ● a8, ● h8)

Sécurité du roi

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

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	fermé
Ruptures	● d2-d4	● …d7-d5, ● …f7-f5

Partie
1944 Moskou ch-URS – Round ? – Sokolsky, Alexey – 1/2-1/2 – Lilienthal, Andor – G120 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. Nd5 Nxd5 8. exd5 e4 9. dxc6 O-O 10. O-O exf3
1944 Moskou ch-URS – Round 1 – Mikenas, Vladas – 0-1 – Alatortsev, Vladimir N. – G88 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. d3 d6 8. a5 Ba7 9. b5 Nd4 10. bxa6 bxa6
1946 Nottingham ch-BCF – Round 11 – Alexander Ronald Cheng – 0-1 – Broadbent, Reginald – G63 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 d6 7. Nd5 Nf6 8. Nxb6 cxb6 9. d3 Bg4 10. c3 O-O
1960 Avantgard Ch – Round 11 – Bakhmatov, Eduard – 1-0 – Lazarev, Efim M. – G59 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. Nd5 Nxd5 8. exd5 Nd4 9. O-O d6 10. Nxd4 Bxd4
1961 Warsaw – Round 1 – Bednarski, Jacek B – 1/2-1/2 – Minev, Nikolay N – G52 1. e4 e5 2. Bc4 Bc5 3. Nf3 Nc6 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. Nd5 Nxd5 8. exd5 Nd4 9. Nxe5 O-O 10. O-O d6
Tal Memorial Blitz 2008 – Round 27 – Morozevich, Alexander – 0-1 – Kamsky, Gata – G227 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. Nd5 Nxd5 8. exd5 Nd4 9. a5 Ba7 10. d6 cxd6
World Blitz 2021 – Round 20.5 – Sindarov, Javokhir – 0-1 – Aronian, Levon – G1185 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. O-O d6 8. Nd5 Nxd5 9. exd5 Ne7 10. d4 exd4
World Blitz 2021 – Round 8.3 – Sindarov, Javokhir – 1-0 – Mamedyarov, Shakhriyar – G464 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. a4 a6 6. Nc3 Nf6 7. O-O d6 8. Nd5 Nxd5 9. exd5 Nd4 10. Nxd4 Bxd4

C51m — Evans Gambit Declined, Showalter Variation (1944)

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4 a6 6.Nc3

Les coups candidats

6…Nf6 — 78.5% (183 parties)

Ambassadeurs : Glazik, Malgorzata (5x), Blankenberg, Bruno (4x), Harding, Tim D (3x), Leyva Proenza, Richard (3x), Pott, Brian (3x), Molner, Mackenzie (3x), Cafferty, Bernard (2x), Rogic, Davor (2x)

6…d6 — 20.6% (48 parties)

Ambassadeurs : Stoinev, Metodi (2x), Zhu, Jiner (2x), Pogonina, Natalija (2x), Eisinger, Max Sr (1x), Hodakowsky, Georg (1x), Sireta, Bertrand (1x), Mellul, Elie (1x), Brinck-Claussen, Bjorn (1x)

6…Nd4 — 0.4% (1 parties)

Ambassadeurs : Tolan, John (1x), Baity, Tony (1x)

6…Bd4 — 0.4% (1 parties)

Ambassadeurs : Ritter Aguilar, Jordi (1x), Meyer, Kuno (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…Nf6	6…d6	6…Nd4	6…Bd4
<1800	9	89%	11%	—	—
1800-2200	75	81%	17%	—	1%
2200-2600	91	78%	22%	—	—
2600+	7	100%	—	—	—

Évolution par décennie (% des parties)

Décennie	N parties	6…Nf6	6…d6	6…Nd4	6…Bd4
1950s	2	100%	—	—	—
1960s	5	80%	20%	—	—
1970s	5	80%	20%	—	—
1980s	12	83%	17%	—	—
1990s	48	81%	19%	—	—
2000s	80	72%	26%	1%	—
2010s	62	77%	21%	—	2%
2020s	19	95%	5%	—	—

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…Nf6	77%	95%	▲ +17.3%
6…d6	21%	5%	▼ -15.7%
6…Nd4	0%	0%	+0.0%
6…Bd4	2%	0%	▼ -1.6%

Parties historiques

6…Nf6 — 78.5% (183 parties)

1956 — Cafferty, Bernard vs Brown, DL. — 1-0 — Whitby
1957 — Estrin, Yakov vs Ravinsky, Grigory — 1-0 — Soviet Union
1960 — Bakhmatov, Eduard vs Lazarev, Efim M. — 1-0 — Kiev UKR
1961 — Bednarski, Jacek vs Minev, Nikolay N — 1/2-1/2 — Warsaw POL
1963 — Bruechner, Siegfried vs Tuerke, Manfred — 1-0 — Leipzig GER

6…d6 — 20.6% (48 parties)

1964 — Eisinger, Max Sr vs Hodakowsky, Georg — 0-1 — Ingolstadt
1979 — Sireta, Bertrand vs Mellul, Elie — 1-0 — FRA cup corr
1980 — Heinola, Kari P. vs Lehmusvaara, Esa — 1/2-1/2 — Uki
1989 — Brinck-Claussen, Bjorn vs Stein, Bernd — 1/2-1/2 — Copenhagen DEN
1990 — Kruza, Pawel vs Stoinev, Metodi — 0-1 — Warsaw POL

6…Nd4 — 0.4% (1 parties)

2002 — Tolan, John vs Baity, Tony — 1-0 — ?

6…Bd4 — 0.4% (1 parties)

2012 — Ritter Aguilar, Jordi vs Meyer, Kuno — 1-0 — Barcelona ESP