Welcome to this website. I tried a summary of information on individual chess commencement by ECO. Individual tabs are divided by ECO. For an illustration of each chess opening are added links to videos, theory, game, or an interesting site. If the link does not correspond to any particular chess launch by ECO, so let me kind visitor of this blog pardons. I am simply a fan of the game called chess, who wanted to create a comprehensive overview launch in one place.
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čtvrtek 21. ledna 2016

Play against computer chess opening positions by eco C00-C99

Encyclopaedia of Chess Openings Classification Code Index-play against computer
Play chess opening positions by eco against the computer. It is also a blindfold mode.

Under the link is hidden opportunity to play positions against the computer.

 C00: French Defence, unusual White second moves: 1.e4 e6

C01: French Defence, Exchange Variation: 1.e4 e6 2.d4 d5 3.exd5 exd5

C02: French Defence, Advance Variation: 1.e4 e6 2.d4 d5 3.e5

C03: French Defence, Tarrasch Variation and unusual Black third moves: 1.e4 e6 2.d4 d5 3.Nd2

C04: French Defence, Tarrasch Variation with 3...Nc6: 1.e4 e6 2.d4 d5 3.Nd2 Nc6

C05: French Defence, Tarrasch Variation 3...Nf6 4.e5 Nfd7, unusual White fifth moves: 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7

C06: French Defence, Tarrasch Variation 3...Nf6 4.e5 Nfd7 5.Bd3 main line: 1.e4 e6 2.d4 d5 3.Nd2 Nf6
4.e5 Nfd7 5.Bd3

C07: French Defence, Tarrasch Variation 3...c5, various White fourth moves: 1.e4 e6 2.d4 d5 3.Nd2 c5

C08: French Defence, Tarrasch Variation 3...c5 4.exd5 exd5 sidelines: 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5
exd5

C09: French Defence, Tarrasch Variation 3...c5 main line: 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5
5.Ngf3 Nc6

C10: French Defence, 3.Nc3 sidelines: 1.e4 e6 2.d4 d5 3.Nc3

C10: French Defence, Rubinstein Variation: 1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4

C11: French Defence, Steinitz Variation: 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5

C12: French Defence, MacCutcheon Variation: 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4

C13: French Defence, Burn Variation: 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4

C14: French Defence, Classical main line: 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5

C15: French Defence, Winawer Variation sidelines: 1.e4 e6 2.d4 d5 3.Nc3 Bb4

C16: French Defence, Winawer Variation without ...c5: 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5

C17: French Defence, Winawer Variation 4...c5 sidelines: 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5

C18: French Defence, Winawer Variation with 6...Qc7: 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+
6.bxc3 Qc7

C19: French Defence, Winawer Variation main line 6...Ne7 7.Nf3 Qc7: 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5
c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 Qc7

C20: Open games, various White second moves: 1.e4 e5

C21: Danish Gambit: 1.e4 e5 2.d4 exd4 3.c3

C22: Center Game: 1.e4 e5 2.d4 exd4 3.Qxd4

C23: Bishop's Opening, 2...Bc5: 1.e4 e5 2.Bc4 Bc5

C24: Bishop's Opening, 2...Nf6: 1.e4 e5 2.Bc4 Nf6

C25: Vienna Game, early deviations: 1.e4 e5 2.Nc3

C26: Vienna Gambit: 1.e4 e5 2.Nc3 Nc6 3.f4

C27: Vienna Game, 2...Nf6 sidelines: 1.e4 e5 2.Nc3 Nf6

C28: Vienna Game, 2...Nf6 Bishop's Variation: 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6

C29: Vienna Game, Classical main line: 1.e4 e5 2.Nc3 Nf6 3.f4

C30: King's Gambit: 1.e4 e5 2.f4

C31: Falkbeer Countergambit sidelines: 1.e4 e5 2.f4 d5 3.exd5

C32: Falkbeer Countergambit main line: 1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6

C33: King's Gambit Accepted sidelines: 1.e4 e5 2.f4 exf4

C33: King's Gambit Accepted, King's Bishop's Gambit: 1.e4 e5 2.f4 exf4 3.Bc4

C34: King's Gambit Accepted, King's Knight's Gambit sidelines: 1.e4 e5 2.f4 exf4 3.Nf3

C35: King's Gambit Accepted, Cunningham-Euwe Variation: 1.e4 e5 2.f4 exf4 3.Nf3 Be7

C36: King's Gambit Accepted, Modern Variation: 1.e4 e5 2.f4 exf4 3.Nf3 d5

C37: King's Gambit Accepted, Muzio Gambit: 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.
Qxf3

C38: King's Gambit Accepted, Neumann's Defence: 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7

C39: King's Gambit Accepted, Kieseritzky Gambit: 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5

C40: Elephant Gambit: 1.e4 e5 2.Nf3 d5

C40: Latvian Gambit: 1.e4 e5 2.Nf3 f5

C41: Philidor Defence: 1.e4 e5 2.Nf3 d6

C42: Petroff Defence, unusual White third moves: 1.e4 e5 2.Nf3 Nf6

C42: Petroff Defence, 3.Nxe5 early deviations: 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4

C42: Petroff Defence, 3.Nxe5 main line: 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3

C43: Petroff Defence, 3.d4: 1.e4 e5 2.Nf3 Nf6 3.d4

C44: Ponziani Opening: 1.e4 e5 2.Nf3 Nc6 3.c3

C44: Göring Gambit: 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3

C44: Scotch Gambit: 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 (4...Nf6--C55, 4...Bc5--C54/C56, 4...Be7--
C50)

C45: Scotch Game: 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4

C46: Three Knights' Game: 1.e4 e5 2.Nf3 Nc6 3.Nc3 (3...Nf6--C47)

C47: Four Knights' Game sidelines: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6

C48: Four Knights' Game, Belgrade Gambit: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4

C48: Four Knights' Game, Spanish Variation sidelines: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5

C48: Four Knights' Game, Rubinstein Variation: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4

C48: Four Knights' Game, Marshall Variation: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5

C48: Four Knights' Game, Symmetrical Variation: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O
O-O 6.d3 d6

C49: Four Knights' Game, Symmetrical Variation main line: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5
Bb4 5.O-O O-O 6.d3 d6

C50: Hungarian Defence: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7

C50: Italian Game: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

C50: Giuoco Pianissimo: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3

C51: Evans' Gambit sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4

C52: Evans' Gambit main line: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5

C53: Giuoco Piano, 4.c3 sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3

C54: Giuoco Piano, 4.c3 Nf6 5.d4 main line: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.
cxd4 Bb4+

C54: Giuoco Piano, Wing Attack: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.b4

C54: Giuoco Piano, Modern System: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3

C55: Two Knights' Defence, 4.d3: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3

C56: Two Knights' Defence, Max Lange Attack: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5
6. e5

C56: Two Knights' Defence, Modern Attack: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.e5

C57: Two Knights' Defence, Polerio Variation: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5

C57: Two Knights' Defence, Wilkes-Barre Variation: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5

C57: Two Knights' Defence, Fritz Variation: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4 6.
c3 b5 7.Bf1 Nxd5

C57: Two Knights' Defence, Fried Liver Attack: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5
Nxd5 6.Nxf7

C58: Two Knights' Defence, 5...Na5 sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5
6. Bb5+ c6 7.dxc6 bxc6

C59: Two Knights' Defence, 5...Na5 main line: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5
6.Bb5+ c6 7.dxc6 bxc6 8.Be2

C60: Ruy Lopez, early deviations: 1.e4 e5 2.Nf3 Nc6 3.Bb5

C60: Ruy Lopez, Smyslov Variation: 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6

C60: Ruy Lopez, Cozio System: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7

C61: Ruy Lopez, Bird's Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4

C62: Ruy Lopez, Steinitz Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6

C63: Ruy Lopez, Schliemann Gambit: 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5

C64: Ruy Lopez, Classical Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 (4.O-O Nf6--C65)

C65: Ruy Lopez, Berlin Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6

C65: Ruy Lopez, Classical Berlin Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5

C66: Ruy Lopez, Berlin Defence with 4...d6: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6

C67: Ruy Lopez, Berlin Defence main line: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4

C68: Ruy Lopez, Exchange Variation: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6

C69: Ruy Lopez, Exchange Variation with 5.O-O f6: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6

C70: Ruy Lopez, Norwegian Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5

C70: Ruy Lopez, Delayed Schliemann Gambit: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5

C71: Ruy Lopez, Deferred Steinitz Defence sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6

C72: Ruy Lopez, Deferred Steinitz Defence with 5.O-O: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 O-O

C73: Ruy Lopez, Deferred Steinitz Defence with 5.Bxc6+: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.
Bxc6+

C74: Ruy Lopez, Deferred Steinitz Defence with 5.c3 f5: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5

C75: Ruy Lopez, Deferred Steinitz Defence with 5.c3 Bd7 6.d4 without ...g6: 1.e4 e5 2.Nf3 Nc6 3.
Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4

C76: Ruy Lopez, Deferred Steinitz Defence 5.c3 Bd7 6.d4 g6 main line: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6
4. Ba4 d6 5.c3 Bd7 6.d4 g6 7.O-O Bg7

C77: Ruy Lopez, 3...a6 4.Ba4 Nf6 sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6

C78: Ruy Lopez, Möller Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5

C78: Ruy Lopez, Arkhangelsk Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3
Bb7

C79: Ruy Lopez, Russian Defence: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6

C80: Open Ruy Lopez sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4

C80: Open Ruy Lopez with 9.Nbd2: 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.Nbd2

C81: Open Ruy Lopez, Keres Variation: 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

C82: Open Ruy Lopez, Italian Defence: 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.c3 Bc5

C83: Open Ruy Lopez, 9.c3 main line: 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.c3 Be7

C84: Closed Ruy Lopez, sixth move sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7

C85: Closed Ruy Lopez, Deferred Exchange Variation: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
Be7 6.Bxc6 dxc6

C86: Closed Ruy Lopez, Worrall Attack: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2

C87: Closed Ruy Lopez, 6...d6: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6

C88: Closed Ruy Lopez, Anti-Marshall Systems: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7
6.Re1 b5 7.Bb3 O-O (8.c3 d6--C90-C99, 8.c3 d5--C89)

C89: Closed Ruy Lopez, Marshall Gambit: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.
Re1 b5 7.Bb3 O-O 8.c3 d5

C90: Closed Ruy Lopez with 7...d6, early deviations: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
Be7 6.Re1 b5 7.Bb3 d6

C91: Closed Ruy Lopez, 7...d6 without 9.h3: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
b5 7.Bb3 d6 8.c3 O-O 9.d4

C92: Closed Ruy Lopez, 9.h3 sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5
7.Bb3 d6 8.c3 O-O 9.h3

C92: Closed Ruy Lopez, Bulgarian Variation: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
b5 7.Bb3 d6 8.c3 O-O 9.h3 Nd7

C92: Closed Ruy Lopez, Zaitsev Variation: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
b5 7.Bb3 d6 8.c3 O-O 9.h3 Bb7

C93: Closed Ruy Lopez, Smyslov Variation: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
b5 7.Bb3 d6 8.c3 O-O 9.h3 h6

C94: Closed Ruy Lopez, Breyer Variation with 10.d3: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d3

C95: Closed Ruy Lopez, Breyer Variation with 10.d4: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4

C96: Closed Ruy Lopez, Chigorin Variation without 11...Qc7: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6
5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 d4

C97: Closed Ruy Lopez, 11...Qc7 sidelines: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7

C98: Closed Ruy Lopez, Chigorin Defence with 12...Nc6: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5. O-O
Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6

C99: Closed Ruy Lopez, Chigorin Defence main line: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4
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