Monday, May 14, 2012

R1 Evangelista vs Sol Cruz

National Open
Quezon City

Posted by rjsolcruz at 4:00 AM
Labels: ,

9 comments:

  1. rjsolcruzAug 7, 2012, 3:56:00 PM

    5 f4 d6?
    I think better is to capture with 5... exf4 in order to prevent White from establishing a powerful center because:

    It is extremely important to get two pawns together on the fourth rank whenever feasible. This controls a lot of space, not only in front but also in the back of the pawns. Best Lessons of a Chess Coach

    ReplyDelete
  2. rjsolcruzAug 7, 2012, 4:05:00 PM

    6... b6?
    Rhal plans to develop his B on b7. But this pawn move is a pawn move too many, because:

    Possibly one might say without exaggeration that in the opening the plan should be rapid development and nothing else, at any rate, very little else. – Lasker in Manual of Chess

    Maybe better is NM Agagon's nip in the bud strategy - 6... Na5 and which follows:

    In a cramped position, try to relieve the pressure by forcing exchanges of pieces. – Chernev in Logical Chess

    ReplyDelete
  3. rjsolcruzAug 7, 2012, 4:14:00 PM

    8... Bb7?
    This is too slow. forcing the exchange of White's active B by 8... Na5 gives Black the advantage, according to Rybka's evaluation.

    ReplyDelete
  4. rjsolcruzAug 7, 2012, 4:19:00 PM

    11... Nxe4??
    A tactical mistake. Retreating to Nd7 is still equal.

    ReplyDelete
    Replies
    1. rjsolcruzAug 7, 2012, 5:02:00 PM

      After 12 Bxf7+ Kxf7 13 dxe4, material is equal but Black cannot castle anymore and has an isolated g-pawn.

      Delete
  5. rjsolcruzAug 7, 2012, 4:22:00 PM

    14 b4? Nc6
    The position is equal once again!

    ReplyDelete
  6. rjsolcruzAug 7, 2012, 4:24:00 PM

    17... a6?
    Rhal missed another equalizing move - 17... Nd4

    ReplyDelete
    Replies
    1. rjsolcruzAug 7, 2012, 5:16:00 PM

      17 Qc4 is a critical position.

      With 17... Nd4, White's best move is 18 O-O-O. If white plays 18 Bxd4 exd4 19 Qxd4 (if 19 Nd5 Bxd5 with slight advantage) Bg5 and Black has the advantage.

      Delete
  7. rjsolcruzAug 7, 2012, 4:52:00 PM

    18 Nd5
    Therefore, pieces gain in strength by approaching the center; they are strongest when posted there. – Znosko-Borovsky in The Middle Game in Chess

    La Bourdonnais Plan: To combat every developed unit of the enemy in the center with a force at least equal to it and to follow the enemy, after having thrown him back in the center, with a well-supported advance post in the heart of his position.

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