See if this helps. After 4 moves this position arose.
Black has the centre and will develop on nice natural squares.
Infact Black can do what he wants, when he wants.
The set up White was aiming for was perhaps something like this.
White will attack the centre with c4 or d4 or e4 or f4.
It all depends on where Balck puts his pieces.
This is a good player's opening. You have to get the timing spot on
for your pawn break because you only get one shot at it.
(stupid pawns cannot move backwards).
I'm not keen on 1500 players playing like this because they are
giving themselvs a difficult position to handle plus they must be
ready to react against a sudden onslaught
(as what happened in the game).
I prefer to see my 1500 players grab their fair share of the centre
and develop with threats if possible. Especially with White.
Develop your pieces and at the same time try to hinder your
opponents development - one of the opening Rules of Thumb.
White stopped mid-development to play his a3 7 b4 idea and
we reached this position after White's 7th move.
Black played 7...Ng5 hitting the tender spot f2.
Me. I wouild have played 7....0-0 . Get the big fellah out of the
bring in a Rook to sit on e8 and consider a pawn shove.
But Amolvo saw the sore bit in White position (f2) so decided to
pick at it. No harm done as the White set up is hardly geared to take
advantage of someone moving bits around twice in the opening.
White blocked the attack to f2 and Black hit it again with the Queen.
Now this was a moment - The natural retreat for g4 Knight is blocked.
The Queen has strolled into a self-pin on the e-pawn.
The bridges has not been burnt yet. But Black is playing with the matches.
White again blocked f2 with Nf3 and Black spotted he has a promising
piece sacrifice on e3 so went for it. 9...Bxe3. 10.fxe3 Nxe3.
The bridges have been burnt.
Black hits the Queen and the g2 Bishop.
White moves the Queen and defends the g2 Bishop. 11.Qe2.
And Black cements the Knight on e3 with d4. we are here.
Remember the title of the thread. Material sacs for positional advantage
I'd quibble slightly about the title.
'Black sacs for an unclear but very promising attack,' is how I'd put it.
The investment is not bad when you consider you get two pawns,
and a beautiful Knight for the Bishop.
What I like about this game is that Black could not have seen any
further than here. This was based on intuition.
What has so many options.
What Black has done is put White in a very awkward position
and said to him "You get out of it."
White is going to have punch way above his weight to get out of this.
Where as Black moves will easier to find.
It's much easier to attack than defend and kal79 is a 1500 player.
Players under 1800 defend themselves very poorly.
The attacker wins the majority of the games under 1800.
Back to the game.
White undermined the Black e3 Knight with c3. Black at last castled.
Then White attacked the c6 Knight which was not doing any harm
to anyone. Infact so harmless was this Knight Black simply just let it go
and brought the Rook into centre eyeing the Queen and King on the same file.
White took the Knight, Black push on in the cetnre to open files. and we are here.
The more you look the more Black threats you see.
It's very very difficult for White.
White moved his King away from the e8 Rook.
Black took the d-pawn shunning the Knight on f3.
A good move that one. It meant he gets his c1 Bishop into play
with a gain of tempo. 16...Bf5
White must have been going cross-eyed with all the threats.
Where does the Queen go? b5 then bxc6
And after the Queen moves then dxc3+ opens the d-file for
the a1 Rook.
White decided to throw in the Queen to take out a Rook.
Black captured back and White tried to block the open files.
Once again Black refused to win back any material by taking
the Bishop on g2 instead he set up a killer discoverd check.
Another good and instrucitve move by Black.
The game is check and mate not sac and win back.
White hit the Queen missing the double check.
The double check rules - the King MUST move.
And although the g2 Bishop has been under the hammer for the
past few moves it's the b2 Bishop that dies along with his King.
So an excellent game by amolv06 he has the attacking flair, the guts
to jump into unclear water and knows how to present his opponents
Is none of my business. He has not asked for any advice.
But I did take a peek.
P.4169 W.2684 L.1178 D.307
He has played 1.g3 1,613 times scoring 60%
We cannot argue with that. He likes that opening.
He had that position before the Bishop sac on e3 and won.
He can play chess OK, just makes mistakes when he defends.
But so do we all.
No 1 e4 or 1 .d4
I feel sorry for his Kings Bishop never getting a shot on c4 or b5.
kal79 proably feels sorry for me - "What kind of saddo sits up all
night anlaysing one of my games?"