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Underestimated van't Kruijs, Reversed French and Nimzo-Indian attack

  • #1

    It turns out that Explorer makes great estimations of van't Kruijs opening 1. e3:

    https://www.chess.com/forum/view/chess-openings/explorer-s-top-opening-choices-d-20

    Maybe it's not so strange since it leads to the Reversed French:

     

     

    as well as to the Nimzo-Indian attack wink.png:

     

     

  • #2

    Well, its perfect if u like to play exchange french because 1.e3 e5 2.d4 d5 3.exd5 etc... transposing.

    Or Owen's reversed with 1.e3 e5 2.b3

    There is nothing wrong with all openings u play with white, transposing into reverse reliable defence with black tempo up.

    U just lose some advantage because u don't put enough pressure but for most, it is not so relevant...

    1.e3, 1.d3, 1.g3, 1.c3, 1.a3, 1.h3 are all fine if u know the reversed openings.

  • #3

    The wise advice by our famous IM poucin. blitz.pnghappy.png

  • #4

    Bumping this thread for Differentiation2 who is now interested by van't Kruijs.

  • #5

    I have made a few improvements to the NIA, too!

     

  • #6

    Also, interestingly, initially 2.Be2 is given -0.2 by the lichess engine, but after playing the lichess engine with reversed moves, it turned to +, or =.

    Interestingly, the best way for black to equalize is the reversed advance.

    Be2 looks weird, but often the bishop becomes useful, and the only lines where it isn't useful, black also has weirdly placed pieces. Also, Van't Kruijs can also become a reversed QG or Agincourt grin.png

  • #7

    Interesting, Bernard, especially this unorthodox 2. Be2 move. blitz.png Maybe someone else could comment it too.

  • #8

    Yeah, the only downside is that I can't get a reversed Winawer without wasting a tempo and getting a real reversed Winawer, not a tempo up.

     

  • #9

    Black can play 3..e5xd4 4e4xd4 leading to an  exchange french, where white has chosen the slightly passive be2, instead of bd3. Black is content with unambitious choices in these reversed positions to get equality.

     2c4 might be interesting too, if the white player plays e6 sicilian's.

  • #10

    1.e3 is ok as an opening for white, Yigor. It's bound to be solid at any rate. happy.png Like against 1 a3, a very logical try against 1. e3 is 1. ... g6, which anticipates white's possible intention of b3 or b4 in the case of 1. a3. Perhaps the only relevant, off-beat try against 1. ...g6 is 2. h4!?

  • #11
    Optimissed wrote:

    1.e3 is ok as an opening for white, Yigor. It's bound to be solid at any rate.  Like against 1 a3, a very logical try against 1. e3 is 1. ... g6, which anticipates white's possible intention of b3 or b4 in the case of 1. a3. Perhaps the only relevant, off-beat try against 1. ...g6 is 2. h4!?

     

    Nice variation by Optimissed blitz.pnggrin.png evaluated at +0.2 (lichess, Stockfish 8, d=21/21):

     

     

  • #12
    Yigor wrote:

    Interesting, Bernard, especially this unorthodox 2. Be2 move. Maybe someone else could comment it too.

    I got the idea after seeing the 2.Be2 Sicilian

     

  • #13

    Yigor: Do you think 2.a3 against 1...e5 would work? Worst case scenario is black transposes to a reversed exchange French, which is equality anyways.

  • #14
    Differentiation2 wrote:

    Yigor: Do you think 2.a3 against 1...e5 would work? Worst case scenario is black transposes to a reversed exchange French, which is equality anyways.

     

    Normally, a3 pairs better with d3 and b3 with e3. But, curiously, 1. e3 e5 2. a3 seemes to be quite good here. tongue.png

  • #15
    Yigor wrote:
    Differentiation2 wrote:

    Yigor: Do you think 2.a3 against 1...e5 would work? Worst case scenario is black transposes to a reversed exchange French, which is equality anyways.

     

    Normally, a3 pairs better with d3 and b3 with e3. But, curiously, 1. e3 e5 2. a3 seemes to be quite good here.

    Yeah, a later b4 to free the LSB would be useful anyways.

  • #16

    If you are going for a french structure as white, it is the dark squared bishop that needs improving. If that is the case, doubful can improve on 1e3 e5 2d4 anyway, can play a3, or be2 later if really want to. Probably after 2...exd4 pxp can't improve on bd3 at some point.

  • #17
    Yigor wrote:
    Optimissed wrote:

    1.e3 is ok as an opening for white, Yigor. It's bound to be solid at any rate.  Like against 1 a3, a very logical try against 1. e3 is 1. ... g6, which anticipates white's possible intention of b3 or b4 in the case of 1. a3. Perhaps the only relevant, off-beat try against 1. ...g6 is 2. h4!?

     

    Nice variation by Optimissed evaluated at +0.2 (lichess, Stockfish 8, d=21/21):

     

     

    I invented it, at least in my head, ten seconds before I posted it. However, I remembered seeing games in open sections of local tournaments where h4 and h5 had been played. I suspect black would be the weaker player to respond like that. I should have thought black can ignore it and develop, and the game would be more even than +0.20. Maybe even -0.10.

  • #18

    something wrong with the a3, c4, g3, Bg2 formation?

  • #19
    TwoMove wrote:

    If you are going for a french structure as white, it is the dark squared bishop that needs improving. If that is the case, doubful can improve on 1e3 e5 2d4 anyway, can play a3, or be2 later if really want to. Probably after 2...exd4 pxp can't improve on bd3 at some point.

    Yeah, I meant the DSB. I'm just so used to playing the French that I automatically typed LSB.

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