567 ( +1 | -1 ) How to play two games for the price of one ....Here is a fascinating game I have recently completed: board #514060
It's in fact two games in one! Why? Because the "first game" continues from move 1 to move 21. White gains a decisive advantage, but then loses it in one blunders. And that's when the 2nd game begins. It lasts a bit longer - 42 moves, for a total of 63, but eventually white manages to win this one as well! Here are some comments I wrote up for the game, you may feel free to add your own observations/corrections/flames.
This the is Accelerated Dragon variation of the Sicilian defense. Black hurries along with g6 and Bg7 before playing d6, hoping later to play d7-d5 in one move. The drawback of such plan is that the control of e5 is lost, and white can start an advance in the center at once.
6.Nxc6 bxc6 7.e5 Ng8 8.Bc4
I consider this to be the best plan against the Accelerated Dragon. Other ways leave black with a comfortable position.
This is a theoretical move, but in my opinion a dubious one. With no pieces developed, can black really spare the time to move his queen like this ? Safer is 8...Bg7 9.Bf4 Nh6 followed by 10...0-0, and black has some prospects due to his majority of pawns in the center.
More consistant is 9...Qb4!? - as a way to justify the queen's early sortie.
White doesn't waste time defending the central pawn, instead continuing development. Now black has no choice but to take the bait - otherwise Qa5 has been useless.
10...Bxe5 11.Bxe5 Qxe5 12.Re1 Qf4!?
Again, following the theoretical recommendations, but not the best. The counterintuitive 12...Qb8 seems to be black's best chance (but not 12...Qc7 13.Nd5! cxd5 14.Qxd5 etc)
The rook really needs to go to e3 (to threaten Rf3), but before that white safeguards Bc4 with a gain of tempo.
13...Qf6 14.Re3 d5!?
Black's condition is critical, and 14...Nh6 was the last chance to hold. The text move seems good at first sight, but white can break through with a sacrifice!
Up to here, play follows an encounter between myself and a German player on the IYT server. In that game, my opponent declined the sac by 15...Bf5, but ran into 16.Re6! Bxe6 17.Bxc6+ Kf8 18.Bxa8 and black remained a pawn down and eventually lost. In this game, black decides to accept the sacrifice, so my analisys for the previous game have not been lost in vain!
This is my own innovation, prepared during the analisys of the above-mentioned game vs. the German opponent. In a previous game in this line, 16.Nxd5 was played and black managed to rescue a draw.
16...Rb8 17.Ne4 Qe6
There is nothing better - 17...Qf4 18.Qd4 and the dual threat Qxh8 and Nd6+ decides. Black must give up his queen.
After 18...exd6 white would still have to play very accurately to secure himself a big material advantage: 19.Rxe6+ and now: a. 19...Bxe6 20.Qd4! f6 21.Qxa7 followed by Qg7 and Qxh8 b. 19...fxe6 20.Qd4! e5 21.Qxd6 (now 21.Qxa7 allows Rb7) Rb5 22.c4 Ra5 23.b4 and the black rook cannot guard e5. Of course this was all part of my home analisys for the previous game ...
Now it should be over. White easily gains a large material plus.
19... Bxe6 20.Qe5 Nf6
White's position is of course entirely won. Indeed, as black confided later, he intended to resign after the next move. But instead, white decides to get clever and plays ...
The reason for this blunder is very simple: Figuring the game was already over, I hurried along with my move, and I didn't see that after Kxf7 the rook on b8 is defended! Now white squandered all his advantage, and the game begins anew.
Only now I noticed that 22.Qxb8 is NOT a good idea ...
22...Rb6 23.c4 Re8 24.c5 Rc6 25.b4
Taking advantage of the fact black cannot capture on a2 to advance the pawns faster - 25...Bxa2 26.Ra1 Ra6? 27.Qe2
25...Bd5 26.a3 Re6 27.Qc3 Rxe1+ 28.Qxe1 e5?
Not a good move. The pawn was very well placed on e6, where it supported the bishop. Black should have brought some of his pieces over to the queenside to battle the passed pawns, and the game still remains tense, but equal. Now white has the advantage again.
A loss of tempo, as white's next move shows. In two moves black's position went from equal to critical.
30.Qb4 Bd5 31.a4 Re7 32.a5 Rd7 33.h3
It's important to mind the back row, eg. 33.c6? Bxc6
33...Ke6 34.c6 Rc7 35.b6
Is it a good move, winning material, or does white "sell his passed pawns cheap"? I am still not sure there isn't a better option available!
A nice queen manuever forces black to give up either h7 or e5. White's position becomes won for the 2nd time in this game ...
45...Ke6 46.Qxh7 Be4
White's plan now is to make a passed pawn on the h-file. But not immediately 46.h4 because of 46...Rf4. So white dances around with his queen a bit more to worsen the position of the black pieces. There's no rush ...