6.a3 is not a move you want to play. ...Bb4 is comming sure but why not find ways to develop that deal with ...Bb4? That way you continue to improve your position while 6.a3 is unfortunately almost like passing a turn. So here you would like to find a pattern of development that allows you to deal with threats on your center pawns while increasing your advantage in development, space and time. This may require a little calculation since Black will be developing with the purpose of attacking your pawns. Although there isn't much in the way of tactics we must calculate to keep the advantage even on move six!
So lets just look at the obvious 6.Nf3 Bb4 7.Bd3, developing and defending e4. The move Bd3 protects e4 but weakens d4. So 7...Nc6 puts pressure there right? Nope. After 8.O-O White is fine since 8...Nxd4 Nxd4 9.Qxd4 Bb5+ wins the queen. I believe these are the tactics you were looking for. Lets say that Black sees this and plays 8...O-O. He then loses to the greek gift sac after 9.e5 Nd5 10.Bxh7+ Kxh7 11.Ng5+ Kg6 12.h4 (muy importante) 12...Rh8 13.h5+! Rxh5 14.Qd3+ f5 15.exf6+ Kxf6 16.Qf3+. So White definitely has an advantage here.
Lets try 7...c5 because it doesn't lose anything. 8.O-O! Nc6 9.d5 Bxc3 10.bc (Now Black has to move the bishop) 10...Ba5 (10...Bb4 11.a3) 11.cxb7 Bxb7 12.Qa4+ Kf8 and White's strong development leads to Black giving up castling rights. Long-story-short, White's positive imbalances are pretty positive and Black's threats to the center pawns don't really work out. Chess gets interesting when you start finding this stuff and you start to see how White has better possibilities when playing actively and avoiding moves like 6.a3 when possible. It's also fun when you can play O-O! Back to the game...
Maybe you can play 8.Bd3 O-O 9.h4 here? Idunno.
9.d5 looks really good. 8...Bd7 loosened Black's control of d5 (kinda like how Bd3 in analysis "weakened d4) and White can take advantage of this and ruin Black's coordination even more e.g; a.) 9...Nb8/9...Na5 10.dxe6 b.) 9...exd5 10.exd5 Na5 11.Bd3! threatening b4 when Black will have to spend some time unwraveling the position. c.) 9...exd5 10.exd5 Nb8 11.Bd3! (again asking Black what the bishop on d7 is doing and making the knight on b8 a little uncomfortable) and after a mistake like 11...c6? 12.d6 Bf8 13.Qe2+ White wins material.
10.d5 is probably still good.
11.Be3 is definitely better. The knight on h5 is practically floating. Generally when you have an advantage in space you don't want to trade. In the 9.d5 position you could see how this was causing Black's pieces to get in the way of each other.
13.Bd3 - you don't want to trade here. After the trades we can see that Black only has to manage two pieces now and they're both bishops too.
Maybe 15.f4 Bxe5 16.dxe5 Qxd1 17.Rfxd1 Rfd8 18.Ne2 is ok.
33.f4 Be7 34.Nxe7+ Qxe7 35. Rc4 looks good but you have to watch the backrank. I think White should be better but queen endings are tough.
White's advantage was better development and more space. Black was having trouble finding good squares for the pieces and soon the discoordination could lead to tactical problems (like 9.d5). But after trades like 11...Nxg3 and 13.Bxc6 a lot of the problems were gone e.g; one bishop getting to c6 and the other to f6. So while it is good to develop you have to be on the lookout for the problems in Black's position. Developing is good but given enough time Black's bad position might have become good with some work and so your development has to be put to use sooner or later. By seeing the "imbalances" in Black's position and the weakening of certain squares then you would find tactical chances. By developing and only developing you can miss them.
Hello guys. This is just my second post after enjoying chess.com for quite a while (on and off).
I've been buying and reading books alot of books the last 6 months. Acutually I read more than I play and enjoy getting into the theory.
I benefits a bit from Silmans HTRYC in understanding what to do when I cannot find any tactical play - but I think I suffer from not understanding how to grasp plans taking advantage of my "positive imballances", e.g. this game where I felt I had a lead from the beginning but didnt know what to do with it and almost drawed the game was it not because of a blunder from black:
I'd try to annotate some of my thoughts. Perhaps you guys can help me finding the "next step" in my development. Thanks in advance.