Sunday, August 12, 2018

REDUX Developing a sense for the initiative

 Originally posted at Dec 13, 2017. REDux added in RED.

Now the ToS is simplified, it is time to get a sense for this way of looking to the position. To describe it in those terms.

Black to move


r3kb1r/2qn1pp1/p4n2/4pNB1/1p3P2/6N1/bPPQ3P/2KR1B1R b kq - 0 1
[solution]

In terms of the tree of scenarios:
Diagnosis:
  • Target: The king and queen look juicy
  • point of pressure:  c2; b3
  • line of attack: c-file
  • function: c2 defends king and b3 (overworked)
  • immobility: King has Lack of Space; c2 is pinned; K and Q are at a knightforks distance
REDUX I
I devoted a lot of time in the past with describing the advantages of the flight of the vulture. But is it really so beneficial as I have always advocated? Practice has shown no significant advantageous result. Since I have become allergic for everything that causes the overwhelming of my mind, we maybe must reconsider this. The initiative offers enough handles to prune the branches of the tree of scenarios. Do you really need to know that there is a rook at h1 when you are mating the king? I noticed in practice that I can do often very well without knowing where every piece is. Only when I get stuck it might be necessary to look any further.

I already concocted the idea of looking at the position in the following order:
  • targets
  • points of pressure
  • lines of attack
  • functions
Why not just add  a hierarchy of the targets?
  • King
  • Queen
  • Promotion
  • Loose piece
  • Rook
  • Minor piece
Why should I bother about the rook at h1 when the king is in jeopardy? Only when I'm forced to dismiss the king as an achievable target, it is time to look to the next potential target on the list. That is early enough.

REDUX II
In order to prevent my mind from being overwhelmed, I must get rid of all those pesky lists. No list of targets, but just one target at the time. The most logical target is the white king. I focus on the king.

What is the most logical point of pressure? Without further thinking, c2 pops to mind. So I focus on c2. No list of points of pressure, just one point of pressure at the time.

What do I want to know about a point of pressure?:
  • it must be in contact with the target
  • the target must be immobile OR
  • the point of pressure must be in contact with two targets
  • the attacker must be able to occupy it in 2 moves at maximum
  • it  must be on the brink of being outnumbered
c2 falls short in the last department: it is not on the brink of being outnumbered. What next?

Bf8 can attack the king in two moves 1. ... Bc5 2. ... Be3
But again, e3 is not on the brink of being outnumbered.

Next point of pressure is b3. 1. ... Nc5 2. ... Nb3+
This would put you on the right track. 

Notice how many branches are pruned with no risk of pruning too much.


Plan: add attacker to b3

Cashing in: it becomes apparent that  you not only have to look for counter attacks when you want to cash in, but at any moment that you don't make a double function move. When you potentially give the initiative away. Due to the multiplex immobility you can permit a move that hasn't a double function. That isn't a two headed monster. (1. ... Nc5)

7 comments:


  1. Its one thing to describe a solution, an other thing to find it. I think it might be more important to find the reason why this puzzle is so hard:

    Some possible reasons are

    Target: Rh1 ( and Kc1 ?)
    line of attack: diagonal h1-a8 and then eventually a-file for the queen with chackmate at the backrank

    and

    you dont want to move the Nd7 because it looks like its dangerous..

    and

    Nc5 is a silent move but the position seems to need a stronger move because of black possible Nd6+

    ...

    Its necessary to get ridd of such wrong ideas quick to be able to focus on the right ideas

    ReplyDelete
    Replies
    1. "Its one thing to describe a solution, an other thing to find it."

      Usually I try to describe how the find it. I want to do it different this time. In stead of to put my already overly trained slow logic brain at work and make it bulkier, I try to educate my unconscious mind by just showing it the essence.

      Delete
  2. It looks like there are three possibilities on the ToS that might apply.

    (1) diagnosis -> immobility -> Lack of space

    (2) plan -> lack of space -> Squeeze the box

    (3) methods -> exploit immobility

    The "cue" (for me) is the immobility of the White King - it has NO legal moves, i.e., it is already in the "box." That immediately brings to mind - how to attack the White King as fast as possible. The Black Queen is already engaged in pinning the c2-Pawn.

    There are two available Black pieces for adding additional attackers to the "box." The Black Rook (a8) can add to the pressure on c2, but that still does nothing to attack the White King with a check. That leaves the Black Knight at d7. It just "happens" that there is a juicy square (b3) from which the Black Knight CAN give check. So, 1. ... Nc5 rapidly comes into focus as a very significant second-order threat.

    What can White do in the interim? Nothing, really. It will take at least one move to open up an escape from the "box." Intermezzo moves (such as 2. Nd6+ Bxd6) do not change the "box"; it is still locked shut around the White King. Because of the BBa2, capturing the b4 Pawn (2. Qxb4) does nothing to open the "box"; Black can still play 2. ... Nb3+ (reinstituting the pin by the Black Queen AND zapping the White King inside the "box." White has no choice but 3. Qxb3 Bxb3, losing the Queen for a Knight.

    So, it looks like scenario (2) is the operative one. After considering 1. ... Nc5, it begins to be apparent that there is a fork on the White King and White Queen on b3. Although the White Queen CAN move (somewhere), that Queen move will not relieve the "box" problem: the White King still has NO moves after the Black Knight lands on b3 with check, simultaneously closing off the "escape square" (d2) opened by moving the White Queen.

    I didn't even consider trying to "attack" the WRh1 along the a8-h1 diagonal (with, perhaps, 1. ... Qc6). Why not? Because it loses the initiative to 2. Bg2, skewering the Black Queen and Black Rook. Lack of King mobility is a much more important "signal" than attacking an isolated unprotected piece which can be protected (or moved) without adverse impact.

    When there is an immobile King with the "box" already formed around it AND there are at least two pieces "attacking" the "box", my approach is to look very long and hard at how to bring more pressure to bear against that King. Whatever piece(s) can be brought to bear must be thrown at it.

    On this point Alekhine goes so far as to say "all general considerations must be entirely forgotten" and "only that which contributes to the execution of the plan selected is of any avail." - E. A. Znosko-Borovsky, The Middle Game in Chess, pg. 60.

    "ALWAYS CHECK: IT MIGHT BE MATE!"

    (I love pithy sayings that have double meanings!)

    ReplyDelete
  3. I experienced the fact that the Q and K are on a knightsfork distance as a form of immobility. 1. ... Nc5 was a move without tempo. But if it had been, there was no way to prevent the fork without the loss of wood.

    ReplyDelete
  4. I'll explain how I looked at this problem.

    Minute 1: Seriously, another tactics problem? (Not you, my sentiment at the moment about every one seemingly suggesting that everything in chess is a tactics problem, and now here is a difficult one to solve).

    Minute 2-3: 1...b3, 2.c3 Qxc3, 3.bxc3 Bh3+, 4.Kb2 Rc1. Oh, wait, 3.Qxc3 prunes that branch. This is perhaps the biggest problem I have when calculating (and it just cost me my last OTB game) is applying the process of elimination. I will go unconstrained on some variation, only to figure out after much time spent that the whole line can be discounted at move one or two. It's as if I see long lines, and then maybe decide to blunder-check them - extremely haphazard methodology of analysis.

    Minute 3: Well, this is a tactics problem, and Black is in favor. hmm, no real immediate threats against Black, so what is this free ...Nd7 doing? Nothing, supposed to be attacking since it's a tactics problem and Black has been given the green light. So, 1...Nc5 and yes unstoppable fork, and 2.Qxb4 fails as well.

    Actually, I solved this problem in under three minutes - which would be a long time in a blitz game, and it's not saying much since in a real game one could be much more mentally tired OTB at this stage of the game, and there is no green light to terminate your opponent's position, only the instinct for survival at times.

    ReplyDelete
  5. Hi Tempo,
    Back from my chess.com game bingeing and learning the Benko gambit. In looking at the problem and it solution ; it occurred to me the answer could also be arrived at by asking the principled question. How can I bring one more piece into the attack ? Cheers, Jim Takchess.

    ReplyDelete