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| Apr-27-10 | | TheaN: 2/2
Interesting discussion about 28....Qxc3 29.Qxc3 d2† 30.Kf2 ?. To be honest, I didn't even look at the mating nets of the Queen and pieces, looking purely at material and simplification and see that d1=N† is an instant killer. That's why I agree with the assesment that d1=N† is best in time trouble, and d1=Q is the best move. And with time trouble I'm talking 3 to 5 minutes, not less than a minute as that is getting difficult anyways. |
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| Apr-27-10 | | amaurobius: Shouldn't this be Wu vs Koneru rather than Shaobin vs Koneru? I was one of those lazy people who didn't bother thinking beyond 28...Qxc3 29 Qxc3 d2+ |
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| Apr-27-10 | | wordfunph: 28...Qxc3 wins! |
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| Apr-27-10 | | vanytchouck: Easy to find, especially after following the 2nd game of the Anand - Topalov match where the same theme was latent. (...Ba7 ...Rxd3 ... e2+ ).
Anand has stopped any begining of hope with Rb3.
For the puzzle, is then :
28...Qxc3 29. Qxc3 d2 + and 30...d1 = Q winning. |
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| Apr-27-10 | | abuzic: In such positions it's very easy to play 28.Be4, trying to pressure on the advanced pawn but missing the combined Q sac folloewd by the discovered check and promotion into undefended square. Guarding the promotion square is better with 28.Bf3 or 28.Kf1, or getting the King out of the check with 28.Kg1 and the B can later go to either f1 or f3 (not 28.Kf2 when 28...Qc5+ leads to interesting variations) |
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| Apr-27-10 | | gtgloner: First thing that jumps out at me here is 28. ... Qxc3! Not sure if this is right, let's see.
_____________
Hah! Got it. |
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| Apr-27-10 | | thegoodanarchist: Got this in two seconds. An excellent Tuesday puzzle. Play might continue 29.Qxc3 d2+ 30.Kf2?? d1=N+!
On another topic, it is good that a young lady with the name "Humpy" did not grow up in the US - her school years would not have been too pleasant with all the teasing she would receive... |
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| Apr-27-10 | | A Karpov Fan: got it. nice again |
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| Apr-27-10 | | randomsac: Qxc3 works because a discovered check gives black his queen back for his advanced pawn. |
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| Apr-27-10 | | zanshin: <28....Qxc3> sort of jumps out at you. Best for White might have been <28.Bf3> to protect d1. |
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Apr-27-10
 | | chrisowen: After 28..Qxc3 white has a climb to mountain. The range is incorporate bishopa6 pd3 and affliate queening that hillside scrambler. The clandestine approach is passing up the buck 27..Bb7 and setting a trap with 28..Qc7. The method man is protect your neck Bf3 prevents the sac and keeps a lid on proceedings, then Ba6 cannot rake one of the channels. Wu tangles son alongside the lovely lady Humpy until black swarms and pockets deep Qxc3 killer. Be4 looks crap missing the point of it 0l. Rustle up a harder one next time. |
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| Apr-27-10 | | kevin86: Easy! I saw the loaded grenade in the bishop check-the pin was the pawn. To ignite,the pawn must be moved and first the queen forced to unblock it.Hence the queen sac-the pawn will check and then queen next move. Black is left a bishop ahead with the queen off the board+easy win. |
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Apr-27-10
 | | doubledrooks: <Once> wrote: <But does it win cleanly? White would be two pieces down, but he might harbour hopes of setting up a fortress. Minor piece endings can be tricky.> I'm sure minor-piece endings can be tricky, but IMHO being two minor pieces up gives black a crushing advantage---he'll just munch on the white pawns, while always looking for an opportunity to exchange off white's last piece. |
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| Apr-27-10 | | rossvassilev: aside from the fact that this one was too easy, what kind of parents would name their kid "koneru"? as if the surname "humpy" wasn't bad enough. |
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| Apr-27-10 | | apexin: only spontaneus move is often the winning one. at least at easy/medium puzzles |
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Apr-27-10
 | | Once: I seem to be in a minority of one today! Ho hum.
My thinking was simply this - after 30...d1=Q, I couldn't see a move for white that didn't involve throwing away his queen or allowing a quick mate with black's two bishops and queen. The best seemed to be 31. Bd3 Bxd3, but even that is just a delaying tactic. Fritzie confirmed this. I certainly didn't see the mate in 13, but the loss of a queen is usually enough to force resignation. Three minor pieces against one ought to be an easy win ... but I'd have to play a lot more moves if my opponent wanted to prolong the agony. Not great if I'm short on time. And there's always the chance that we can go wrong. For example, I have drawn a game two pieces down by exchanging into a two knight v K endgame. Anyone fancy having to play out the dreaded N+B mate? So my pick was 30...d1=Q, but I have the utmost respect for anyone who went the alternative route. |
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| Apr-27-10 | | VincentL: In this "easy" position, 28....Qxc3 jumps out at me instantly. If 29. Qxc3 d2+.
Now 30. Bd3 simply loses the bishop after 30....d1=Q+ (leaving black a bishop up) If 30. Kg1/Kf2 d1=Q+ and black will mate
If 30. Kg2 d1=Q+ and black is a bishop up with strong mating threats. Time to check. |
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| Apr-27-10 | | 310metaltrader: Maybe i am dense, but what about:
30... Bb4
31 Bxb4, Qc1+
31. Qxc1, d2+ (discovered)
32. Kf2 d2xc1=q
now black is up a queen for a piece, not just a piece. |
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| Apr-27-10 | | 310metaltrader: of course, on my line, 31 Bxb4 is not forced, but the bishop is toast if not |
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Apr-27-10
| | Once: <310metaltrader> That's a clever line, but I think it runs into: 30...Bb4 31. Bxb4 Qc1+ 32. Kf2
click for larger viewThe white Bb4 protects the Qd2 and there's no discovered check, I'm afraid. |
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| Apr-27-10 | | 310metaltrader: wow, this is the first time i have used the online move maker, i seriously did not see things that i see over the board. whoops |
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| Apr-27-10 | | wals: Rybka 3 1-cpu: 3071mb hash:depth 14:
White was right in the game, up to
the horrendous move,
28.Be4 -12.73. Much better was, Bf3 -0.14, or Ke1 -0.57. |
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| Apr-27-10 | | YouRang: Seeing the potential for a discovered attack and subsequent pawn promotion by moving the e-pawn pretty much gives it away. All we need is a way to deflect the white queen such that it isn't guarding d1. And voila! there is 28...Qxc3, stealing a bishop such that recapture gives us the deflection we seek. |
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| Apr-27-10 | | DarthStapler: Got it easily |
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| Apr-27-10 | | turbo231: Got it, but it took some time. Excellent puzzle. Koneru Humpy is getting closer and closer to Judit Polgar. Judit is playing very well right now, she just defeated David Navara, the best player in Czechoslovakia last week 5-1-2. |
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