Let me try to analyse backwards in order to find the seeds of my positional demise in a recent game. I belief that retrograde analysis is a term with a well specified meaning in chess, so in order to not annoy the few esoteric souls that are occupied with that I will use the term backward analysis in stead.
In the graph above you see the appreciation of Rybka of a game of me as white. Somewhere around move 19 I was pretty lost, allthough it took me a long time to say goodbye to the point.
What is so bad in the position of move 19 and how did it came about?
Let's have a look at the diagram.
I just moved Rad1.
What are the elements that make my position bad? That I feel obliged to give up the exchange?
- My knight is pinned.
- The diagonal d6 h2 is weak.
- The diagonal c5 g1 is weak.
- My knight has no place to go (besides that it is pinned).
- My knight is bound to the defense of pawn e4.
- The square e5 is firmly in the hands of the enemy.
- The f-file is in the hands of the enemy.
- My queen is bound to the defense of the knight.
- My queen has very little space.
- The d-file is of no use to me.
- 1. e4 weakens the c5 - g1 diagonal. No big deal at this moment :)
- 7. Bxc6 gives black a mobile pawn which he can use as a battering ram later on.
- 10. Ne2 heading for the weak postion on g3.
- 12. d4 weakening my e-pawn, give diagonal d6-h2 away, freeing blacks bishop and giving black a possible outpost on e5.
- 14. Nxe6 opening the f-line for black, exchange the defender of the c5-g1 diagonal, allowing Qh4
- 15. h3 weakening my knight
- 18. c3 taking away space of my Queen.
- 19. Rd1 giving up the exchange.