To answer my own question, it combines three ideas: 
1) opposition (2) triangulation (3) waiting move to find corresponding squares. kindaspongey's explanations and Coleman's video should clarify further. But I think understanding those three tactics is basic to understanding corresponding squares. Thanks to all concerned.
How do you identify corresponding squares?
Sort:
joseph1000000 wrote:
kindaspongey wrote:
OldPatzerMike (the one on the right) wrote:
"It must be understood that the opposition is only a special case of corresponding squares." [Emphasis in the original.] -- Yusupov, Build Up Your Chess 1, Chapter 10.
In somewhat the same way, being in Moscow is a special case of being in Russia. A map of Moscow would be of limited value if one's goal was to know how to get around Siberia. Similarly, the Yusupov "opposition" chapter is of limited value in trying to understand a problem like the one I discussed above. In Build Up Your Chess 2, Chapter 20, Yusupov briefly referred to the problem that was discussed at:
https://www.chess.com/forum/view/endgames/triangulation-troubles
Doing a quick search, I did not find a Yusupov attempt to explain problems like the one I started to explain above.
Beside triangulation is there a new tactic covered here or not?
I am not sure what you mean by "here". I am guessing that you are referring to my discussion of this diagram:
I also am not sure what issue you have in mind when you write "a new tactic". Perhaps, what you have in mind is whether or not one could acquire the ability to do problems like this by learning about opposition and triangulation. That seems to me to be a tricky question with an answer that depends on the person doing the learning. I imagine that some gifted individuals could (eventually) come to an understanding of the above diagram without any previous endgame study. Some might be able to work it out with the help of some opposition and triangulation experience. However, my guess is that the largest group would be those who would still have a lot of trouble with the above diagram, even with previous opposition and triangulation experience.
joseph1000000 wrote:
To answer my own question, it combines three ideas: 1) opposition (2) triangulation (3) waiting move to find corresponding squares. ... I think understanding those three tactics is basic to understanding corresponding squares. ...
My guess is that, even after learning about the three numbered items, many would still have trouble with the above diagram. The three numbered items might help some, but they aren't essential for an understanding of the above diagram. You may notice that I made no reference to any of the three items in my own discussion of the diagram.
kindaspongey wrote:
joseph1000000 wrote:
To answer my own question, it combines three ideas: 1) opposition (2) triangulation (3) waiting move to find corresponding squares. ... I think understanding those three tactics is basic to understanding corresponding squares. ...
My guess is that, even after learning about the three numbered items, many would still have trouble with the above diagram. The three numbered items might help some, but they aren't essential for an understanding of the above diagram. You may notice that I made no reference to any of the three items in my own discussion of the diagram.
True. Those are my thought. I just study chess. I don't play. You are much more involved in study and play. I have not read all the material yet, but if I do I make another post.
It is better to break down a problem into less complicated ones. Regardless, every point of view can cast another spotlight on the issue discussed.
I admit I like your explanation better after reading it closely. Excellent work.
"It must be understood that the opposition is only a special case of corresponding squares." [Emphasis in the original.] -- Yusupov, Build Up Your Chess 1, Chapter 10.
In somewhat the same way, being in Moscow is a special case of being in Russia. A map of Moscow would be of limited value if one's goal was to know how to get around Siberia. Similarly, the Yusupov "opposition" chapter is of limited value in trying to understand a problem like the one I discussed above. In Build Up Your Chess 2, Chapter 20, Yusupov briefly referred to the problem that was discussed at:
https://www.chess.com/forum/view/endgames/triangulation-troubles
Doing a quick search, I did not find a Yusupov attempt to explain problems like the one I started to explain above.
Beside triangulation is there a new tactic covered here or not?