Chess Opening Theory/1. e4/1...e5/2. Bc4/2...Nf6/3. d4/3...exd4/4. Nf3

Bishop's Opening: Ponziani-Urusov Gambit
	a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
	Position in Forsyth-Edwards Notation (FEN) rnbqkb1r/pppp1ppp/5n2/8/2BpP3/5N2/PPP2PPP/RNBQK2R b
	Moves: 1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3

Bishop's Opening: Ponziani-Urusov Gambit

4. Nf3

White has placed the knight on f3, supporting the idea of the pawn in e5 to expand in the centre and attack Black’s knight.

Theory table

.

1. e4 e5 2. Bc4 Nf6 3. d4!? exd4! 4. Nf3

	4	5	6	7	8	9
Two Knights Defence by transposition	Nf3 Nc6	e5					=
Two Knights Defence by transposition	... ...	O-O					=
Keidansky Gambit	... Nxe4	Qxd4 Nf6	Nc3 Nc6	Qh4			=
Keidansky Gambit	... ...	... ...	... Be7	Bg5 c6	O-O-O d5	Rhe1 Be6!	=
Panov Variation	... d5	exd5 Bb4+	c3 Qe7+	Be2 dxc3	Nxc3 O-O	O-O Re8	=

References

Wikipedia has related information at Bishop's Opening.

Panov, Vasily. (1973). Teoría de Aperturas, Tomo I: Aperturas Abiertas - Aperturas Semiabiertas. ISBN 84-270-0132-0.

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Chess Opening Theory

1. e4 e5
Open games

2. Nf3

2...Nc6

3. Bb5
Spanish

Berlin →
- Anti-Berlin
- Beverwijk
- L'Hermet → Berlin Wall

Morphy →
- Exchange
- Closed → Marshall
- Open
- Arkhangelsk
- Anderssen
- Mackenzie

3. Bc4
Italian

Giuoco Piano →
- Evans gambit
- Giuoco pianissimo
- Rosentreter
- Jerome ??

Two knights defence →
- Open
- Knight attack →
  - Fried liver
  - Polerio

Anti-fried liver ?!
Blackburne shilling ?

3. Nc3 Nf6
Four knights

Other

2...Nf6
Russian

2...d6
Philidor

Other

2. f4
King's gambit

2...exf4
Accepted

King's knight →
- Kieseritzky
- Schallop
- Modern
- Fischer
- Lolli ?
- Muzio ?
Bishop's →
- Cozio

Other
Declined

2. Nc3
Vienna

Falkbeer →
Max Lange

Other

1. e4 c5
Sicilian

2. Nf3

2...Nc6 3. d4 cxd4 4. Nxd4

2...Nc6 other

2...d6 3. d4 cxd4 4. Nxd4

Dragon →
- Levenfish attack
- Yugoslav attack
Dragondorf
Kupreichik
Najdorf →
Scheveningen

2...d6 other

2...e6 3. d4 cxd4 4. Nxd4

French, Normal
Kan
Kveinis
Paulsen-Basman
Taimanov →
- Bastrikov →
  English attack
- Szén →
  Garry Gambit

2...e6 other

Others

Anti-Sicilians

1. e4 e6
French

1. e4 c6
Caro-Kann

1. e4 other

Barnes ?
Borg ?
Corn stalk ??
Duras ??
1...b5 ??

1. d4 d5
Closed games

2. c4
Queen's gambit

2. Nc3

2. other

1. d4 Nf6
Indian

2. c4 e6

2. c4 g6

King's Indian →
Grünfeld

2. c4 other

2. Nf3

2. other:

1. d4 f5
Dutch

1. d4 ...other:

Flank

Unorthodox

a3
Na3
a4
b4
c3
Nc3
d3
e3
f3
h3
Nh3
h4

Bishop's Opening: Ponziani-Urusov Gambit
a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN) rnbqkb1r/pppp1ppp/5n2/8/2BpP3/5N2/PPP2PPP/RNBQK2R b
Moves: 1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3