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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. c3/3...Nf6

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Ponziani Opening, Jaenisch Counterattack
a b c d e f g h
8a8 black rookb8 black kingc8 black bishopd8 black queene8 black kingf8 black bishopg8 black kingh8 black rook8
7a7 black pawnb7 black pawnc7 black pawnd7 black pawne7 black kingf7 black pawng7 black pawnh7 black pawn7
6a6 black kingb6 black kingc6 black knightd6 black kinge6 black kingf6 black knightg6 black kingh6 black king6
5a5 black kingb5 black kingc5 black kingd5 black kinge5 black pawnf5 black kingg5 black kingh5 black king5
4a4 black kingb4 black kingc4 black kingd4 black kinge4 white pawnf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 white pawnd3 black kinge3 black kingf3 white knightg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 black kingd2 white pawne2 black kingf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 white bishopg1 black kingh1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/2P2N2/PP1P1PPP/RNBQKB1R w

Moves: 1. e4 e5 2. Nf3 Nc6 3. c3 Nf6

Ponziani Opening, Jaenisch Counterattack

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3. Nf6

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The Jaenisch Counterattack is the most common response to the Ponziani Opening at both amateur and master level.

With 3. Nf6, Black attacks the e4 pawn. This takes advantage of White's last move, as Nc3 is no longer possible due to the pawn on c3.

White's best response is to continue with the plan of d4.

4 5 6 7
d4
exd4		 e5
Nd5		 cxd4
d6		 +=
d4
Nxe4		 dxe5 +-
d3
Bc5		 =+
Qc2
Bc5		 =+
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