Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...d5/5. exd5/5...b5

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< Chess Opening Theory‎ | 1. e4‎ | 1...e5‎ | 2. Nf3‎ | 2...Nc6‎ | 3. Bc4‎ | 3...Nf6‎ | 4. Ng5‎ | 4...d5‎ | 5. exd5
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Ulvestad Variation
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 kingc7 black pawnd7 black kinge7 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 pawnc5 black kingd5 white pawne5 black pawnf5 black kingg5 white knighth5 black king5
4a4 black kingb4 black kingc4 white bishopd4 black kinge4 black kingf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 black kinge3 black kingf3 black kingg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 white pawnd2 white pawne2 black kingf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 black kingg1 black kingh1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

r1bqkb1r/p1p2ppp/2n2n2/1p1Pp1N1/2B5/8/PPPP1PPP/RNBQK2R w

Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 b5

Ulvestad Variation

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5 ... b5.

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The defining move for the Ulvestad Variation. Black challenges the strong bishop on c4 by offering a pawn.

Theory table

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For explanation of theory tables, see theory table and for notation, see algebraic notation..

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5

Ulvestad Variation

6 7 8 9 10
Bf1
Nd4		 c3
Nxd5		 Ne4
Qh4		 Ng3
Bg4		 f3
e4		 ∞
Bxb5
Qxd5		 Nc3
Qxg2		 Qf3
Qxf3		 Nxf3
Bd7		 O-O
Bd6		 =
dxc6
bxc4		 Qe2
Qd5		 f4
Qxc6		 fxe5
Bg4		 Nf3
O-O-O		 =

Estimated next move likelihood

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Bf1 62%, Bxb5 28%, dxc6 6%, Bb3 2%, Qe2 1%

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References

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Wikipedia has related information at Two Knights Defence

  • Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.


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