About yesterday's position Takchess commented the following:
So perhaps we should ask ourselves: what is the Big Idea in each position ? Look at structure first with no or minimal calculations. The attack of f7 is the Straw that stirs the drink.
There are two elements in this comment.
- At first that there is a big idea or big idea's in such complex tactical position with a definite outcome. Constructing narratives has proven to be a quite good method to discover these big idea's.
- At second the comment suggests that it is possible to look at the structure and to see the big idea. Thus ruling out the necessity for calculation for a great deal. I am convinced that that must be possible.
Yet I have the feeling that it must be possible to see the big idea. This position stems from a game Keres - Mecking. I'm convinced Keres saw it.
But I have no clue whatsoever how to realize this myself. This piece of the puzzle is still missing.
White to play and win.