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Irina Krush vs Keith Bevan Richardson
5th Gibraltar Chess Festival (2007), Gibraltar Gibraltar, rd 5, Jan-27
King's Indian Defense: Averbakh Variation. Modern Defense Burgess Line (E73)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jul-25-07  Rook in the 7th rank: Why resigned black so late?!
Jul-25-07  aazqua: Trivially easy
Jul-25-07  nateinstein: Yesterday took me 6-7 minutes. Today takes me 6-7 seconds.
Jul-25-07  patzer2: For today's solution, Krush's clever 30. Nxd6! trapped piece combination snares a Rook if her opponent declines the pseudo-sacrifice or the Queen (as in the game) if he accepts it.

The sequence of pawn forks (double attack) which follow, and the final trapping of a Knight or Bishop after 37. d6!, enhance the entertainment value of this amusing game.

Jul-25-07  JG27Pyth: <Swing and a miss for me. I did actually look at Nxd6 several times, but Bc5 just completely eluded me.>

ditto. :(

Jul-25-07  jon01: I saw that after 30. Nxd6 Qxd6 black's queen is trapped and I thought Richardson would probably resign.
Jul-25-07  zb2cr: I saw the Queen win, and stopped there. Took me roughly 2 minutes.
Jul-25-07  officeplayer: 43... Re7 [43... Bc8 44. Ra8 Re7 45. Rxc8 Rg7 46. Qe6(#in 3)] 44. Qd6 Rg7 45. Qxb6

Jul-25-07  bogo78: I dont see any way to go for the ♔ since the kingside seems to be closed for now at least. Shifting attention to Q side I notice that 30 Nxd6 and the ♘ cannot be recaptured (30Qxd6 31.Bc5 and the ♕ is trapped) So 30Be7 (with idea of capturing on b4 if Nxb7) 31 Nxb7 Bxb4 32. Rb3 Rxb7. From here the b5 pawn will be captured next but i still cant say that it will be won very quickly. Black can hold at least for a while. Is it that this week we are supposed to believe that the quality in itself is a winning advantage? Ok first let me check the line, perhaps white can do much better than I have thought.
Jul-25-07
Premium Chessgames Member
  keypusher: A real positional Krush!
Jul-25-07  bogo78: oh my...it seems black can blunder. Why not 30 Be7?! I ll look in the previous posts for the answer but I am really surprised at 30 Qxd6.
Jul-25-07
Premium Chessgames Member
  playground player: "Medium easy"? Oh, come now! If this is what we get on Wednesday, what's the Friday puzzle gonna be like?
Jul-25-07  YouRang: Nuts. I got bogged down in the crampedness of the position and just didn't look at the knight capture deeply enough. I thought I found a line to win a pawn, but I think I should have solved this: A cramped position can be dangerous for a queen.
Jul-25-07  likestofork: <bogo78> 30....Be7 31 Nxb7
Jul-25-07  bogo78: <likestofork: <bogo78> 30....Be7 31 Nxb7> yes likes, but please read also my previous post. I still believe that going the exchange down would be the safest way to proceed.
Jul-25-07
Premium Chessgames Member
  kevin86: This proved to be a hard nut to crack;d6 seemed to be the only weak point-and then I saw the queen trap, should black take with the queen. If he doesn't,the knight will cause too much havoc to bear.

Black's position crumbled to dust in a short time-funny game this is-chess.

Jul-25-07  dabearsrock1010: no one can use Krush as a pun ever again EVER its worn out its welcome and if I see it again i may "blow the whistle" as i will consider it a personal attack against me
Jul-25-07  AlexandraThess: Easy one! I saw in about 7 seconds.
Jul-25-07  Crowaholic: In this incredibly closed position, I fail to see any attack on the king. Neither does troubling the black rooks or trying to skewer the minor pieces seem to go anywhere. But now that I look at it, methinks 30. Nxd6 wins at least a pawn because

30. ..Qxd6? 31. Bc5 wins the queen for the bishop, thus totalling ♕+♙ for ♘+♗, a 5 pawn gain.

But let's look at the whole line as I see it (for now):

30. Nxd6 Qxd6 31. Bc5 Qxc5+ 32. bxc5 b4 33. Rb3 bxc3 34. Rxb7 Rxb7 35. Rb1 Rxb1 36. Bxb1 and the c pawn is unlikely to be saved, thus White totals ♕♖♖♙♙ for ♖♖♘♘♗, or 22 for 19 points, still a +3 advantage.

If the knight is declined, e.g.

30. Nxd6 Rb6 31. Bxb6 Rxb6 winning the exchange (again with a +3 material lead). Is there more to it? Probably...

Hmmm, I failed to visualize the opportunity for the neat counter-fork 33. c6!. Black played on for quite a long time. But after 43. Qd5 with the prospect of 43. ..Re7 44. Qd6 winning White a bishop and surely mating thereafter, Black realized the rest of the game is not going to be much fun.

Jul-25-07  Crowaholic: <bogo78>: I think 30. ..Be7 is interesting but not better than 30. ..Rb6: 31. Nxb7 Bxb4 32. Ra7 Bxc3 33. Nc5 and e.g. 33. ..Bxa1 34. Nxd7 Qd6 35. Nxb8
Jul-25-07  zanshin: I don't think this is a fair puzzle because black did not play the best moves. Both 30...Rb6 and 30...Be7 are better, though still lost.

1. (2.54): 30...Rb6 31.Bxb6 Rxb6 32.Ndxb5 Qxb4 33.Nxc7 Bxc7 34.Kg2 Rb8 35.Nd1 Bb6 36.Ne3 Kg8 37.Ra8 Bd4 38.Rxb8+ Qxb8 39.Rc1

2. (3.63): 30...Be7 31.Nxb7 Bxb4 32.Ra7 Bc8 33.Nxb5 Nxb5 34.Bxb5 Rxb7 35.Rxb7 Bxb7 36.Ra7 Bc8 37.Qc4

3. (3.67): 30...Qxd6 31.Bc5 Qxc5+ 32.bxc5 b4 33.c6 bxa3 34.cxb7 Rxb7 35.Rxa3 Be7 36.Ra1 Bc5+ 37.Kg2 Bd4 38.Rb1 Ra7 39.Nb5

Jul-25-07
Premium Chessgames Member
  fm avari viraf: White's position is far superior having more mobility & the pieces are well coordinated to Black's cramped & lack of coordination of pieces. Krush crushes Black with 30.Nxd6! the start of a winning combination. If Black declines the Knight he would lose an exchange & even after the text ...Qxd6 Black's position is precarious.
Jul-25-07  Crowaholic: <zanshin: I don't think this is a fair puzzle because black did not play the best moves.>

I don't think this matter much since the best move (which seems to be 30. ..Rb6) still seems to be losing. At the very least, White gets a sizeable advantage for the endgame. If chessgames.com only presented puzzles from games where a perfect defense was played (after the puzzle position), then the daily puzzle would probably have to replaced with the monthly puzzle...

Or do you mean that the Bb6 or Be7 lines are too complex for a Wednesday? I'm not sure - finding best play in the Be7 line is not so easy, but finding a solid, winning continuation is not hard either.

By the way, can anybody guess why Krush didn't play 36. cxd7 ? Black can play 36. ..Rb2, but 37. Bc2 Nb5 38. Qc4 seems quite playable.

Jul-25-07  fyad reject: why cant i ever solve these
Jul-25-07  melianis: Funny, I thought I would try something like Nxd6 - Bc5 - c6, but didn't think that was the answer.
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