Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. Ng5/4...d5/5. exd5/5...b5/6. Bf1

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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 | 5...b5
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Ulvestad Variation
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

r1bqkb1r/p1p2ppp/2n2n2/1p1Pp1N1/8/8/PPPP1PPP/RNBQKB1R

Ulvestad Variation[edit]

6 Bf1! A strange looking move, undeveloping the Bishop, however White wisely retreats the Bishop as tactics advantage still remain on b5.

Theory table[edit]

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 6.Bf1
6 7 8 9 10
Bf1
h6
Nxf7
Kxf7
cxd6
Bc5
Be2
Rf8
+=
...
...
Nf3
Qxd5
Nc3
Qe6
Bxb5
Bb7
O-O

+=
Fritz variation
by transposition
...
Nd4
c3
Nxd5
...
Qxd5
Nc3
Qc5
Bxb5
Be7
Qf3
Bd7
O-O
O-O
+=
...
Nxd5
Bxb5
Bb7
Qf3
Qxg5
Qxd5
Qf6
Nc3
+=
...
Bg4
f3
Nxd5
Nxf7
Kxf7
fxg4
Nf4
c3

+=

Estimated next move likelihood[edit]

h6 40%, Nd4 40%, Qxd5 15%, Nxd5 4%

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References[edit]

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