Ulvestad variant

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Ulvestad variant
  a b c d e f G H  
8th Chess rdt45.svg Chess --t45.svg Chess bdt45.svg Chess qdt45.svg Chess kdt45.svg Chess bdt45.svg Chess --t45.svg Chess rdt45.svg 8th
7th Chess pdt45.svg Chess --t45.svg Chess pdt45.svg Chess --t45.svg Chess --t45.svg Chess pdt45.svg Chess pdt45.svg Chess pdt45.svg 7th
6th Chess --t45.svg Chess --t45.svg Chess ndt45.svg Chess --t45.svg Chess --t45.svg Chess ndt45.svg Chess --t45.svg Chess --t45.svg 6th
5 Chess --t45.svg Chess pdt45.svg Chess --t45.svg Chess plt45.svg Chess pdt45.svg Chess --t45.svg Chess nlt45.svg Chess --t45.svg 5
4th Chess --t45.svg Chess --t45.svg Chess blt45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 4th
3 Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg Chess --t45.svg 3
2 Chess plt45.svg Chess plt45.svg Chess plt45.svg Chess plt45.svg Chess --t45.svg Chess plt45.svg Chess plt45.svg Chess plt45.svg 2
1 Chess rlt45.svg Chess nlt45.svg Chess blt45.svg Chess qlt45.svg Chess klt45.svg Chess --t45.svg Chess --t45.svg Chess rlt45.svg 1
  a b c d e f G H  
Trains 1. e4 e5
2. Nf3 Nc6
3. Bf1 – c4 Ng8 – f6
4. Nf3 – g5 d7 – d5
5. e4xd5 b7 – b5
ECO key C57
Named after Olav Ulvestad

Template: Infobox chess opening / maintenance / new


The Ulvestad variant of the chess opening two knights play in the follow-up ( 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 ) arises from the Prussian game ( 4. Ng5 d5 5. exd5 ) after the move 5.… b7 – b5 and is under the ECO code C57 classified.

It is related to the Fritz variant 5.… Nd4.

The American champion Olav Ulvestad introduced 5.… b5 1941 in an article in Chess Review . White only has one good answer. 6. dxc6 bxc4 7. De2 Qd5 or 7. Nc3 Bf5 is weak. Therefore White should the runners move. 6. Bxb5 Qxd5 7. Bxc6 Qxc6 leads to compensation for Black after 8. Qf3 e4 9. Qb3 Bc5 and 8. 0–0 Bb7.

The best move is 6. Bc4 – f1 , as this protects the pawn on g2 and White on 6.… Qxd5? 7. Nc3 can return.

It is customary to switch to the Fritz variant with 6.… Nc6 – d4, which shows another advantage of 6. Bf1: the bishop is not attacked by the knight, as would be the case after 6. Be2.

In addition, 6.… h7 – h6 with the continuations 7. Ng5 – f3 and 7. Ng5 – e6 established itself.

literature

  • Gregor Cramer: Traxler counterattack, Fritz variant, Ulvestad variant . Thomas Beyer Verlag, 1993, ISBN 3-89168-043-0 .