Last modified on 3 September 2009, at 00:02

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

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 VariationEdit

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

Theory tableEdit

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 likelihoodEdit

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

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ReferencesEdit

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