|Diagram 1 White to move|
Overlooking simple mate patterns.
|Diagram 2 White to move|
Missing an overworked piece.
|Diagram 3 White to move|
Underestimating my invasion.
|Diagram 4 Black to move|
Wrong choice between two knight moves.
|Diagram 5 Black to move|
Both moves threaten mate with 2. ... Qh2
I chose 1. ... Ng4 because of the extra knight fork 2. Re2 Nf2+
Hidden behind this, is that I missed the following mate patterns: 1. ... Ng4 2. ... Nf2#
and 1. ... Nf3 2. ... Qh3#
The problem is not of course that the mate patterns are unfamiliar, but that I decide not to look for them. More precise: there is nothing that triggers the decision to look for the mate patterns.
Of course one can argue that I should look better. Of course I would find the patterns then, sooner or later. I can find almost any solution, given enough time. But this is a quest for speed too. Making the right decisions in short enough time. It is about optimizing the search process for the right move. Omitting unnecessary considerations is just as important as considering the right moves, when it comes to speed.
When I encounter the other error categories, I will add them to this post. In general I'm approaching a problem more logically now, in stead of by trial & error. But since logical reasoning takes more time, the improvement in method doesn't show up in the figures just yet. Well, an increasement of 90 points is not too shabby, but that's a new ATH, which is of course a statistical incident. At average, I increased about 50 points.
It is a matter of investigating what is going on in my mind during these mistakes and excessive time usage. I need a good diagnosis before I can think about a remedy. I'm going to count the errors first, so I know which categories occur the most frequent.