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Christian Cacco vs Igor Khenkin
Padua op (1998), Padua ITA, rd 6, Dec-17
Torre Attack: Classical Defense (A46)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Jan-07-13  vovan47: My answer was:
24.Rc8+ Nd8 25.Qg6+ Kf8 26.Rxd8+ Bxd8 27.Re8# 1-0
Looks totally forced for me.
Jan-07-13  vovan47: Mislooked 25...Kd7 lol :)
Premium Chessgames Member
  whiteshark: I saw that coming.
Jan-07-13  Nick46: I refer to:
<al wazir: A 2100 player beat a GM? This had to be a simul.>

not necessarily ... every dog has his day

Jan-07-13  viking78: Happy New Year for everyone!
Didn't played chess for a while, and missed an entire year here I think, but I'm back trying to feel the game again! So it's Monday, Very Easy, I must be rusty or something cause I stared at the pos. for about 5 minutes before seeing what I think is a solution (bye the way maybe is a shorter way to win but can't see it pfff). So: 24.Rc8+ Nd8 (forced, only move) 25.Rxc5 followed by 26.Qxe7 and game over. I'm not very sure, and ashamed if I miss a Monday... Time to check.
Jan-07-13  viking78: Wow, very nice 24.Rxc6!!
Jan-07-13  morfishine: A bit Squirrely for a Monday. This is due to the odd and congested Black piece formation Nc6/Qc5/Rc4, which resembles literally a 'house-of-cards' or a line of dominoes all set to be pushed over.

Such congestion can result in a position reaching 'critical mass' as the blending of 'themes' are revealed and exploited once the attack commences

<24.Rxc6> Addresses two problems at once: The Black Bishop is pinned, but defended by two Black pieces; so while this move destroys one defender of the Bishop, it also conveniently attacks the second defender.

So far, we've seen two themes: (1) Pin & (2) Removal of the guard. The hyper-active rook now threatens the second defender (again, removal of the guard) using a third theme, deflection (of the Black Queen, who is now the last defender of e7). This is all possible due to a fourth theme: overload. From the beginning of this sequence, the Black Queen has been 'overloaded' covering Nc6 & Be7 (as well as Rc4).

Once the Black Queen moves, White will profit from a fifth and sixth theme (double-attack & laser) that were present all along due to the White Queen targeting c4 directly while the White rook on c7 targets c4 indirectly (seeing thru the Black Knight and Queen, a hybrid 'laser'), The combined themes double-attack & laser now reveal the Black Queen to again be 'overloaded' first defending Nc6 and now Rc4, resulting in the capture of the rook, highlighting all six themes burdening the Black Queen: a pin, removal of the guard, overload, deflection, double-attack and laser.

At this point, Black may as well try to 'swindle' and play 24...Rxc2, which threatens the devastating 25...Qxf2+; but, 24...Rxc2 also signals his intention to resign, which he does before White plays 25.Rxc5

Jan-07-13  mistreaver: White to play. 24. Monday. Very easy?
24 Rxc6 and if black recaptures then mate on e7, if not then the rook on c4 goes as well and white has winning endgame. Time to check.
Gotta love Mondays. I'm gonna evaulate this week, so 1/1 for now.
Jan-07-13  Prosperus: It is far from "very easy"...
Jan-07-13  Bartimaeus: <goodevans : <24.Rc8+ Nd8 25.Rxc5> wins> To continue this line 25.. Nxe6 25. Rxc4 Kf7 and while white can win this, its not a cakewalk. There are stronger continuations in the Rc8+ line for white.

Overall, while white will win with Rc8+ too due to black's hopelessly exposed king, it clearly is an inferior move as compared to Rxc6 which gets to the point much faster.

Jan-07-13  zb2cr: White wins material with 24. Rxc6. Retaking is immediately fatal: 24. ... Qxc6??; 25. Qxe7#.

The Black Queen is under threat and overworked. She has to maintain protection of both e7 and the R on c4. She can maintain protection of the Bishop with 24. ... Qb4, 24. ... Qa7, or 24. ... Qa3, but then White calmly grabs off the Black Rook on c4 and is ahead by 2R vs. B AND is threatening mate by Rc8#.

Probably best for Black is the counterattack on White's Queen with 24. ... Re4. White plays 25. Rxe4, though, and if 25. ... fxe4; 26. Rxc5.

Jan-07-13  awfulhangover: Hehe, for two minutes I desperately was looking for a mate and a sexy piece sac! After I decided 24.Rxc6 I still wasn't sure I found the best..puhhhhhh...
Jan-07-13  lzromeu: 24....rE4 AND SO ON REFUTES the imediate mate, But Lose material. This is the best line I can found for Black
Premium Chessgames Member
  doubledrooks: I voted for 24. Rxc6 and now:

a. 24...Qxc6 25. Qxe7#

b. 24...Re4 25. Rxe4

c. 24...Qb4 25. Rxc4

A good problem for a Monday!

Jan-07-13  Desensitizer: Deep Shredder instantly finds the correct moves for black (probably adds some insight to other black solutions)

24. Rxc6 Qb4
Bishop is still protected, queen is safe, and minimal material loss The best move for white now is is
25. Rxc4 Qxe4 26. Qxe4
Forcing a Queen Rook vs Bishop Rook endgame
if white goes
25. Qxc4 Qxc4 26. Rxc4
Then it is a rook and rook vs bishop and rook engame, which is worse or
25. Qxe7 Qxe7 26. Rxe7 Kxe7 27. Rxc4
and it is a rook for rook endgame
After 24. ... Qb4 any other alternatives free black from the present trap

Premium Chessgames Member
  chrisowen: Steal a march in aim clop black knight in c6 to re-estable sign e7 or cocoon black head bind in x-rays e7 I ment c8 clop in headbind knight defended base of spine concrete coccyx in find 24.rc8+. Aim drought in rich 24.Rxc6. looks shave in away the cobweb it she vent in stager c5 lifted over a7 in b4 it a3 in etc whence queen in e7 mates (cuz inch of in administer the coup de grace) ie thanks to pin e1 e6 for rook burrow in e4, simply ok babe snatch off in e4 ride a c5 yar grange off re it her in e6 dominant in heave now line it is ado in g6+ caio for queen in good while,?
Premium Chessgames Member
  kevin86: After the text,the bishop three times covered will be in danger! White wins a piece to start with.
Jan-07-13  James D Flynn: The position is materially unbalanced with White having R and 5 pawns versus B,N, and 3 pawns. The White K is safely tucked away behind its pawn chain but must be careful to avoid back rank mates, whereas the Black K is subject to harassment by the White heavy pieces. The easiest and most obvious win is 24.Rxc6 the Q must continue to defend the B on e7 so the choice is Qb4 or Qh3 but in either case 25.Rxc4 leaves White with Q and 2Rs versus Q,R, and B. However, there is an easier endgame win with 24.Rc8+ Nd8 25.Qg6+ Kd7 26.Rxc5 Rxc5 27.Rxd7+ Kxd7 28.Qg7+ Kd6 29.Qxh8 Rxc2 30.Qxh6+ Kd5 31.Qxa6 Rc1+ 32.Qf1 and White is happy to exchange Q for R and let the h pawn win the game for him. 24.Qc8+ Kf7 25.Qxh8 also leaves White with a winning material advantage but leaves more pieces around to muddy the issue.
Jan-07-13  BOSTER: This is the pos. after 7...Qxb2.

click for larger view

And this is an advice.

"Never take the queen knight pawn!
This principles can be violated by a Fischer, who makes the pawn-grab the rule rather than the exception" W. Lombardy.

Jan-07-13  jancotianno: Are the grades correct here? A 2190 beats a 2600 in 24 moves.
Jan-07-13  morfishine: <jancotianno> The ratings are correct; Cacco's profile has him over 2300, so its not too crazy
Premium Chessgames Member
  al wazir: <JCRchess: @ al wazir ... this wasn't a simul. This was a FIDE-rated tourney played in Italy.> My mistake.

<FSR: The untitled Cacco (2190) played four GMs, scoring +2 =1 -1 against them, including this win. He tied for first with Khenkin and two other GMs, all of whom he'd played. A real Cinderella story.> Cacco was 17 at the time.

<Abdel Irada: 2190 is a far cry from 2100> Granted, but it is a lot farther cry from 2600.

Jan-07-13  jheiner: Like some others, I saw 24.Rc8+ was winning immediately. But...

“When you see a good move, look for a better one” ― Emanuel Lasker

And found 24.Rxc6+ shortly thereafter. Good Monday.

Jan-07-13  stacase: <goodevans: <stacase: 24 Rxc6 was obvious and the only move to consider.> I beg to differ (see above).>
I should have said it's, "the only move I considered." I saw it first and realized Black's world would come to a speedy halt. So I looked no further.
Jan-07-13  Kikoman: 24. Rc8+ Nd8▢ 25. Rxc5 and wins for White :D

24. Rxc6!! is crushing ;)

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