C67m — Spanish: Open Berlin, Showalter Variation

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Ba4 * ● Trait aux Noirs

Ouverture — Tension centrale

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

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Plans. Re1 (Tour sur colonne semi-ouverte e — 37 % des parties) ; c3 (Renforcer le centre — 25 % des parties) ; Ne5 (Cavalier centralisé en e5 — 24 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

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Plans. ...e4 (Occuper le centre — 62 % des parties) ; ...exd4 (Capture en d4, Occuper le centre — 33 % des parties).

Avantages

Faiblesses

Diagonale active

Plans

Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	—
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	● g5 (2v1)	—
Cases faibles	● d4	● e5
Centre	● e5 (2v1)	● e4 (1v0)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● e	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 5)
Ba4	● Ba4 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 1)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	4 (● c8, ● 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	tension

Partie
1900 DSB-12.Kongress – Round 8 – Pillsbury, Harry – 1-0 – Billecard, Moritz – G51 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 f5 10. f3 exf3
1900 New York – Round 3 – Baird, David – 0-1 – Showalter, Jackson – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. Nxd4 Be7 8. Nc3 O-O 9. Nd5 Nxd4 10. Qxd4 c6
1901 USA tour sim – Round ? – Showalter, Jackson – 0-1 – Lasker, Emanuel – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Ne5 g6 8. f3 Bg7 9. fxe4 O-O 10. Bb3 Nxe5
1902 Berlin blindfold simul – Round 1 – Pillsbury, Harry – 1-0 – Lewitt, Moritz – G1 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 Bf6 10. Bf4 Ne8
1902 Hannover blind sim – Round 1.13 – Pillsbury, Harry – 1/2-1/2 – Fiebig, Paul – G5 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 Bf6 10. Bf4 Ne7
1902 Moscow blindfold sim – Round 7 – Pillsbury, Harry – 1/2-1/2 – Cherniavsky, B. – G7 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 Be7 7. Nxe5 Nxe5 8. dxe5 Nf5 9. Qg4 g6 10. Nc3 c6
1905 Scheveningen – Round 1 – Leonhardt, Paul – 1-0 – Esser, Daniel – G13 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Ne5 Be7 8. Nc3 O-O 9. f4 f6 10. Bb3+ Kh8
1955 Prague tm Prague CZE – Round 6 – Blatny, Frantisek – 1/2-1/2 – Fichtl, Jiri – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 Nf5 10. Be3 Nxe5
20. European Teams 2015 – Round 1.4 – Berg, Edvard Vallestrand – 0-1 – Fressinet, Laurent – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. c3 Be7 8. cxd4 b5 9. Bb3 Na5 10. Bc2 Bb7
36. Olympiad 2004 – Round 13 – Kotronias, Vasilios – 1/2-1/2 – Georgiev, Krum – G479 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 f6 10. Ng4 f5
36. Olympiad 2004 – Round 7 – Sutovsky, Emil – 0-1 – Aronian, Levon – G251 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 f6 10. Nxc6 dxc6
40. Olympiad Open 2012 – Round 9.17 – Al-Mudahka, Mohd – 0-1 – Mastrovasilis, Dimitrios – G500 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 O-O 9. Nc3 a6 10. Bf4 b5
CCT Final Playoff 2023 – Round 4.2 – Firouzja, Alireza – 1/2-1/2 – So, Wesley – G37 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. c3 Be7 8. cxd4 O-O 9. Re1 b5 10. Bb3 Bf6
FIDE World Cup 2015 – Round 1.6 – Safarli, Elmir – 1/2-1/2 – Balogh Urbina, Carlos Alfonso – G189 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Ne5 b5 8. Bb3 Na5 9. Bxf7+ Nxf7 10. Nxf7 Kxf7
GCT Blitz Paris 2021 – Round 16.4 – Nepomniachtchi, Ian – 1/2-1/2 – Kramnik, Vladimir – G77 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Ne5 g6 8. Nc3 Bg7 9. Re1 O-O 10. Nxe4 Nxe4
GCT Rapid Paris 2021 – Round 9.3 – Nepomniachtchi, Ian – 1-0 – Radjabov, Teimour – G42 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. c3 Be7 8. cxd4 b5 9. Bb3 O-O 10. Nc3 Bb7
Global Chess League 2023 – Round 7.2 – Abdusattorov, Nodirbek – 1/2-1/2 – Grischuk, Alexander – G83 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. c3 Be7 8. cxd4 b5 9. Bb3 O-O 10. Nc3 Bb7
Superbet Rapid & Blitz Poland 2025 – Round 7 – Aravindh Chithambaram VR. – 1-0 – Duda Jan-Krzysztof – G34 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Re1 Be7 8. Ne5 b5 9. Bb3 Na5 10. Bxf7+ Nxf7
World Blitz 2021 – Round 6.26 – Shevchenko, Kirill – 1-0 – Sjugirov, Sanan – G338 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 e4 7. Ne5 Be7 8. Nc3 O-O 9. Re1 Bf6 10. Bf4 Ne7
World Blitz 2022 – Round 11.14 – Mamedov, Rauf – 1-0 – Hovhannisyan, Razmik – G564 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. c3 Be7 8. cxd4 b5 9. Bb3 O-O 10. Nc3 Na5
World Rapid Final 2012 – Round 15 – Morozevich, Alexander – 1/2-1/2 – Grischuk, Alexander – G115 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4 exd4 7. c3 d3 8. Qxd3 Be7 9. Re1 O-O 10. Bf4 Ne8

C67m — Open Berlin Defense, Showalter Variation (1900)

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Ba4

Les coups candidats

6…e4 — 61.8% (128 parties)

Ambassadeurs : Shevchenko, Kirill (4x), Ganguly, Surya Shekhar (3x), Guseinov, Gadir (3x), Aronian, Levon (3x), Roktim, Bandyopadhyay (2x), Raghavi, N. (2x), Barbu, George-Viorel (2x), Adhiban, B. (2x)

6…exd4 — 32.9% (68 parties)

Ambassadeurs : Ali Marandi, Cemil Can (5x), Ganguly, Surya Shekhar (2x), Sorcinelli, Andrea (2x), Soltis, Andrew (1x), Eley, Brian Ratcliffe (1x), Lange, Detlef (1x), Riediger, Martin (1x), Kabisch, Thilo (1x)

6…Be7 — 2.9% (6 parties)

Ambassadeurs : Chanda, Sandipan (1x), Kayumov, Sergey (1x), Sherwood, Peter (1x), Nelson, Christopher R (1x), Tabatabaei, M. Amin (1x), Liu, Yan (1x), Salazar Eyre, Emma (1x), Pyun, Lindsay (1x)

6…f6 — 1.0% (2 parties)

Ambassadeurs : Garus, Jerzy (1x), Wielosz, Jaroslaw (1x), Shevchenko, Kirill (1x), Antipov, Maksim (1x)

Analyse statistique des coups candidats

Répartition par niveau Elo (% des parties)

Tranche Elo	N parties	6…e4	6…exd4	6…Be7	6…f6
<1800	11	18%	45%	9%	9%
1800-2200	47	64%	32%	4%	—
2200-2600	111	67%	30%	3%	—
2600+	31	61%	35%	—	3%

Évolution par décennie (% des parties)

Décennie	N parties	6…e4	6…exd4	6…Be7	6…f6
1950s	1	100%	—	—	—
1970s	1	—	100%	—	—
1990s	1	—	100%	—	—
2000s	29	79%	17%	3%	—
2010s	90	57%	39%	2%	1%
2020s	85	62%	31%	4%	1%

Tendances récentes (2010s → 2020s)

Coup	2010s	2020s	Δ
6…e4	57%	62%	▲ +5.7%
6…exd4	39%	31%	▼ -8.3%
6…Be7	2%	4%	▲ +1.3%
6…f6	1%	1%	+0.1%

Joueurs célèbres

Champions du monde dans cette position

Kramnik, Vladimir — 1 partie

Parties historiques

6…e4 — 61.8% (128 parties)

1955 — Blatny, Frantisek vs Fichtl, Jiri — 1/2-1/2 — Prague tm Prague CZE
2001 — Marzolf, Bruno vs Kohl, Hartmut — 1-0 — Baden
2001 — Martorelli, Antonio vs D'Innocente, Stefano — 0-1 — Porto San Giorgio
2003 — Jensen Jeff vs Low Winston — 1-0 — ?
2004 — Karahaliou, Elia vs Ozturk Orenli, Kubra — 1-0 — Dresden GER

6…exd4 — 32.9% (68 parties)

1973 — Soltis, Andrew vs Eley, Brian Ratcliffe — 1-0 — Birmingham ENG
1999 — Lange, Detlef vs Riediger, Martin — 0-1 — Passau
2004 — Kabisch, Thilo vs Remmler, Hans-Peter — 1/2-1/2 — Stuttgart GER
2005 — Ganguly, Surya Shekhar vs Ivanchuk, Vasyl — 1/2-1/2 — Edmonton CAN
2005 — Frier, Ken vs Aarav Kumar koni dena — 1-0 — Edmonton CAN

6…Be7 — 2.9% (6 parties)

2005 — Chanda, Sandipan vs Kayumov, Sergey — 0-1 — Hyderabad IND
2013 — Sherwood, Peter vs Nelson, Christopher R — 0-1 — San Francisco, CA USA
2018 — Tabatabaei, M. Amin vs Liu, Yan — 1-0 — Makati PHI
2023 — Salazar Eyre, Emma vs Pyun, Lindsay — 1/2-1/2 — Milton Keynes, ENG
2025 — Burrows, Martin P vs Spanton, Tim R — 1-0 — Peterborough

6…f6 — 1.0% (2 parties)

2012 — Garus, Jerzy vs Wielosz, Jaroslaw — 0-1 — Gora Swietej Anny POL
2021 — Shevchenko, Kirill vs Antipov, Maksim — 0-1 — Tornelo INT