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Etienne Bacrot vs Alexander Morozevich
Biel Chess Festival (2012), Biel SUI, rd 2, Jul-24
Semi-Slav Defense: Marshall Gambit. Main Line (D31)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
Jul-24-12
Premium Chessgames Member
  OhioChessFan: The duo of Ba6 and Nxg5 is probably a Top 10 of All Time GM Blunders.
Jul-24-12  mrbasso: I wouldn't say that. Besides, the alternatives to 22...Nxg5 are no fun anymore for black.
Jul-24-12  vinidivici: Im thinking different and i also get a mate line. Correct me if theres any mistake...

After black 23...Kxd7

i thought about

24.Bb8+ Kc6
25.Qc3+ Kb5
26.Re5+ Nd5
27.Rexd5+ Rxd5
28.Rxd5+ Ka4
29.Ra5#

or

25...Kb6
26.Qb4+ Kc6
27.Rd6+ Rxd6
28.Qxd6+ Kb5
29.Re5+ Nd5
30.Rxd5+ Ka4
31.Qa3#

Jul-24-12
Premium Chessgames Member
  Eyal: <vinidivici> Your lines are correct in themselves, but 24.Bb8+ is actually a mistake since Black can also play 24...Kc8, and then there's no mate or even a forcing win for White, e.g. 25.Qe5 Nd5!
Jul-24-12  master of defence: What happens after 10...Qxh1?
Jul-24-12  Chess for life: White would castle queenside and then have mating threats along the d file.
Jul-24-12
Premium Chessgames Member
  brankat: A terrible game by Moro. I think it was a "side-effect" of yesterday's loss. This kind of a thing happens often to Morozevich.
Jul-24-12
Premium Chessgames Member
  Robin01: So where did black go wrong?
Jul-24-12  pskogli: I think it's time for "Moro" to grow up! He could be the best player in the world! -Come back Moro!
Jul-24-12
Premium Chessgames Member
  Eyal: <So where did black go wrong?>

The earlier stages of the game are very complex, so it's difficult to say whether Black missed any real opportunity for a serious advantage. But it's clear that after 21.Bxc6 he has to resign himself to a draw by 21...bxc6 22.Qxa7 Rxd6 23.Qa8+ Kc7 (not 23...Kd7?? 24.Qb7+ Nc7 25.Ne5+) 24.Qa7+ Kc8 and perpetual check. 21...Ba6 is already a losing mistake - after 22.Ng5!! (a move which isn't so difficult to miss - White is attacking on the Q-side and suddenly plays on the K-side) Black doesn't have to get mated immediately, but the best he can do is 22...Rxd6 23.Rxd6 bxc6 24.Nxf7 Qxf4 25.Rxc6+ Kb7 26.Rxe6 which seems rather hopeless.

Jul-24-12  Illogic: <Chess for life: White would castle queenside and then have mating threats along the d file.> Indeed, and the queen also on the verge of being trapped
Jul-24-12  capanegra: I was following the game on line. After 21.Bxc6 Bacrot was around 5 minutes left against 20 minutes for Morozevich, so Black had a big clock advantage at that moment (remember that time control is on move 40, so Bacrot's only hope was to succeed in a blitzkrieg attack).

I was waiting for 21...bxc6 followed by the continuation mentioned by <Eyal>, and got quite surprised to watch the unnatural 21Ba6? (Moro took more than 10 minutes to make that losing move). On the other hand, I also had overlooked the tremendous 22.Ng5!! (as well as Moro, that's for sure). After that, it's all over. Moro took almost his remaining 10 minutes for the sad reply 22Nxg5, and when he resigned at move 25 he was even lower on time than Bacrot.

Jul-24-12  vinidivici: <Eyal> maybe i missed something or what. Following your supposed lines

<24.Bb8+ is actually a mistake since Black can also play 24...Kc8, and then there's no mate or even a forcing win for White, e.g. 25.Qe5 Nd5!>

After 25...Nd5 then black play 26.Rxd5 if white takes then 27.Qc7#

And i've calculated that beside your line <25...Nd5!>

There's another 25...Ne6 and maybe better than yours. But that leads to another doomsday also. 25...Ne6
26.Rc2+ Kd7
27.Qd6+ Ke8
28.Rxe6+ fxe6
29.Qxe6+ Kf8
30.Bd6+ Rxd6
31.Rc8+ Rd8
32.Rxd8+ Ne8
33.Qxe8#

Again, maybe i've missed something. This is just a human analysis.

Jul-25-12
Premium Chessgames Member
  Eyal: <After [24.Bb8+ Kc8 25.Qe5] 25...Nd5 then black [white, you mean] play 26.Rxd5 if white [black, you mean] takes then 27.Qc7#>

Yes, of course Black doesn't take - the idea is 26...Qc6+! 27.Rc5 Qxc5 28.Qxc5+ Kxb8 and it's equal.

Jul-25-12
Premium Chessgames Member
  Eyal: <After 21.Bxc6 Bacrot was around 5 minutes left against 20 minutes for Morozevich, so Black had a big clock advantage at that moment>

What's really amazing is that by move 11 or 12 Bacrot was already down to something like 10 minutes and Moro had about 80 minutes "clock advantage". Moro started to burn a lot of time on the clock himself around moves 19-20, and in a video where Bacrot comments about the game (http://www.youtube.com/watch?v=ay5i...) he says that it gave him time to prepare his own answers to Moro's possible moves (I suppose it was also a welcome indication for Bacrot that his position is probably not so bad, if his opponent has to think so much...).

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