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Leonid Alexandrovich Shamkovich vs Gerardo Lebredo Zaragoitia
Mexico City (1978)
English Opening: King's English. Four Knights Variation Quiet Line (A28)  ·  1-0



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Kibitzer's Corner
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Feb-17-12  Memethecat: <polarx: IMHO, this puzzle is not difficult at all once you see what type it is and you know beforehand the method how to solve it> You are absolutely correct, when I have those things in place I usually have excellent results!
Feb-17-12  BOSTER: When you see how black safeguard "a7" and "c7" gracefully opened the iron gate into the beautiful castle, and the cleanshaved highway is without any spectators,you must accept the invitation to visit the castle.

And the rook on b3 without doubt had the same opinion.

At first sight it looks like a smart trap, and knight c6 and rook e8 safely protect from any invasion.

But this is only an illusion, because in reality the castle is empty, and black king can't escape because all doors are closed.

So, if white can remove the defender Nc6 (Bxc6), only one rook e8 will protect the black castle.

It means that the rook e8 is very busy, and white queen can try to lure it. Playng Qe4 creates double attack attacking the rook e8, who doesn't want abandon the king, and bishop f4. And white wins a piece, after Be5 and f4.

Feb-17-12  desiobu: Got the main idea, didn't see Be5 but f4 isn't hard to come up with.
Feb-17-12  Shelter417: <sevenseaman> What happens if White plays Kc2 instead of Kxa2?
Premium Chessgames Member
  doubledrooks: 21. Bxc6 Rxc6 22. Qe4 takes advantage of Black's somewhat weak back rank. For example:

a. 22...Bxe3 23. Bxe8

b. 22...Rxe4 23. Rb8+ and mates

c. 22...Be5 23. f4

Premium Chessgames Member
  chrisowen: Bxc6 in oil it often again; key it is scent in back rank rxc6 in user queen saint chuf,

Good will oust.

Bet your bottom it dollar I plunged it the mix in really it bru

team c6 in exchange it voila in knight bishop.

Right the way it double in dig 22.Qe4 Be5 at war on efile.

But rook good vision let it down in a try it shower in e4 as far cry in from it home ghoul it pool be5 f4 wind Leonid it sail in well it stew and pickle inceed it to in free clink here e4 it tao b8 all ko ref in crook it edifice in goofy o doorc6 dug .

Feb-17-12  fokers13: Hmm i completely disregarded your "cook" comment mate before you brought i up(probably doesn't help that i didn't know what cook was until now:P).Yes bxa2+ is a fine try and i am glad to have found both the winning line and the correct defense.Seeing as bxa2+ is a zwischenzug anyways though you could argue it is an improvement nonetheless:P
Feb-17-12  sevenseaman: <Shelter417> Since <LTJ>'s pointing out that Stockfish does not think there is a second solution I have taken time to recheck the 2nd solution.

2. Ka1 is the defense against this line as found by <jackalope> also. White needs only one tempo. So it seems there is no 'cook'.

<LTJ> You and Stockfish seem to be right in the assessment that there is no second solution. I feel very sorry for wasting yours and other kibitzers' time. For a considerable while I did believe there was one.

Feb-17-12  polarx: <Memethecat>, I guess you are being ironic. :)

But yeah. I mean... yeah!

Feb-17-12  sevenseaman: <EXIDE> I am using an old link provided by <David2009> for position generation. Crafty is most days sluggish and we have to really wait for it to be on best behavior. I do not know why it is erratic.

<David2009>If you have a new link for position generator, please post it for my benefit.

Feb-17-12  LoveThatJoker: <sevenseaman> Obviously 1...bxa2+ 2. Ka1 (only move). I found that move and was like "Wait, Black has no mate here." Then I was like "1...Re4 interfering with the B diagonal. No, because of 2. Qxe4 (forced)." And so on...

The only thing I can tell you, sevenseaman, is that I wrote you a stronger-toned note to bring about the seriousness of the respect I have for you as my fellow kibitzer. I know I myself have made mistakes in the past in my kibitzes: Like labelling a certain move "(best)" when in reality there was a better defence.

For example, last week with the Thursday Qd2/Qc1 puzzle. You accurately pointed out a splendid defence with ...Qa5. Which was only slightly weaker than ...Qb4 in that it did not control the d6/e7 diagonal. However in the lines I was looking at it was fantastic as it covered c7. Furhtermore, even though I found the alternate solution of sacrificing the N on g5 with check ...Qa5 proved that White would still have to prove his win in an endgame (favourable of course, but still having to prove the win entirely)!

Did I come up with ...Qa5 in my initial post: No. So, that's when I realized, "sevenseaman has a keen vision, look at his posts each time to see what if he's come up with other interesting lines."

That being said, the mistakes I have made have been in my own analysis and not in the 'meat'/position of a challenge issued to fellow kibitzers.

I knew when you posted your side puzzle today that almost no-one was going to reply. It happens with another fellow kibitzer, Jimfromprovidence, quite a bit also. The reason is that it takes courage, effort and time to get up in a public forum and go, "Ok, I'll play." There are many kibitzers here who have courage, but not time and have the time but don't want to put the effort and so on.

I just felt, ok, sevenseaman has issued a challenge and I love to solve puzzles so I'll take it up! But I also knew somewhere that I was gonna be one among a limited few to take you up, man.

And I didn't appreciate what I felt was a little bit of goading from you. You addressed me respectfully...yes. But I personally, would never issue you a challenge and then "say, well, shucks sevenseaman, I expect better from you and you shoud know that by now already..."

It's not appropriate.

I look forward to your posts, sevenseaman. And although I'm sorry that my tone was harsh towards you, I'm glad that you have understood that some fellow kibitzers care about what you say, and therefore you have to ensure to be accurate when delivering a challenge.

That said, as you can see, I am one those who looks forward to reading your posts, as I know you have keen chess vision.

Your friend in chess,


Premium Chessgames Member
  Once: Whoa! Two of the people I enjoy reading and consider to be friends have managed to find some friction.

Not good. Definitely not good.

We are competitive people. Almost by definition, because we play a competitive game. And that can sometimes bring some heat into the conversation.

But I think it's just the heat of competition. Nothing more. All is well.

So let's change the subject with a joke...

Man watches a dog licking its own genitalia. He casually remarks to a colleague: "I wish I could do that."

The colleague replies: "I'm sure he'd let you if you ask nicely enough."

Okay, so it has nothing to do with chess or the current situation, but it made me smile.

Feb-17-12  galdur: Easy enough once you spot the back rank idea.

21.Bxc6 Rxc6 22.Qe4 wins a piece. If 22...Be5 23.f4.

Feb-17-12  James D Flynn: I think that LIFE Master AJ's suggestion of 22....Bh2+ is the best Black defense to 22.Qe4, although I found his White answer of 23.Kh1 bizarre. Yes White is OK in the sense he isn't lost but he has thrown away the win after 23....Rce6 24.Qd3 Bd6(or even e5). Therefore 23.Kxr2 is forced then Qd6+ if 24.Qf4 Qxf4 25.Bxf4 Rxc4 and Black has a P for his Bishop and better chanxca of eliminating both Q side pawns. It is probably still a win for White but more difficult than the 22....Be5 variation. If instead 24.Bf4 Rxe4 25.Bxd6 f5 and Black picks up the c4 pawn and can harass the B if Bg3 with f4 and h6.
Feb-17-12  1stboard: This puzzle had all the looks of removing the guard ( Knight ) and a problem with the king having no flight square, A.K.A. back rank mate.

Black should have found time/move to have given his king a flight square.

Feb-17-12  sevenseaman: <LTJ> 'You do accept challenges and stand manfully up to them'; I respect that. It makes me feel you are serious and approach the forum with proper values and due reverence.

That is why I am able to evaluate your advice in the right perspective and spirit and not just fly off the handle merely because the dagger has not been clothed in satin.

Most people ignore the challenges and I find their silence <more> hurtful. I am now old enough on the forum to know that only a select few will respond. When I post something I feel good about, those few are the constituency I aim at.

At times no one responds and I have to live with that too. Its the risk one has to take when one's convictions impel one to share ones 'eurekas' with others.

When colleagues like you respond, I do feel grateful for being merited a consideration. Similar reasons impelled me to urge <Once> to come back to the forum when he lately had taken an exception to it.

Thanks <Once>. There's no real friction. Its a matter of individual <style> and I am sure both of us can take peccadilloes in our stride.

Reminds me of a small joke; (perhaps it will be a repetition but I'll risk that).

An old man riding a rickety bicycle in rainy weather slipped and fell. Some urchins standing close by had a hearty guffaw (usual thing when people see others in a sorry predicament) but had enough decency to rush to his aid.

'Sorry sir', said they while trying to help him get up.

The proud man would have none of it. "Sorry, what for?" and shook away any assistance.

'Well sir, you just fell'.

'Fell? Who fell? Can't a man have his own style of dismounting?'

Feb-17-12  M.Hassan: "Difficult" White to play 21.?
Equal in materials:

Black's back rank is supported by one Rook and Black King does not have an escape square if checked. Knight on f6 supports b8 square where White Rook can land for a possible check. Eliminating the Knight should be the first move:

21.Bxc6 Rxc6
<if......Rxe4 23.Rb8+ and Black Rook and Queen can not stop checkmate>

23.Bxf4 Qe6
24.Qxe6 fxe6
25.Be5 Rxc4
26.Rd1 Rc5

White is ahead by a Bishop for a pawn and one of the a and c pawns can be taken by White.

Time to check
Same system of defence by Black. I deserve a credit and is another difficult Thursday that I survive.

Feb-17-12  LoveThatJoker: <Once & sevenseaman> It's a great sign of maturity bringing some levity here with calmness and humour.

I sincerely appreciate reading your posts.


Feb-18-12  King Death: <AJ> There was a short article in CL+R on this tournament in 1978 and I don't remember which month but I'm pretty sure this was one of the games in the report.
Feb-18-12  rilkefan: <<King Death>: <AJ>>

Cats and dogs living together.

I wonder if <Once> has done a Ghostbusters-themed post yet.

Feb-19-12  LIFE Master AJ: Nice game, have worked doing analysis on this game. Thinking about doing it either as a video or a web page.
Feb-19-12  LIFE Master AJ: My analysis is just about finsihed. (I was hoping to post it the same day as the problem, however, that was just not possible.)
Jun-14-12  LIFE Master AJ: <<Feb-17-12 James D Flynn: I think that LIFE Master AJ's suggestion of 22....Bh2+ is the best Black defense to 22.Qe4, although I found his White answer of 23.Kh1 bizarre.>>

Please follow this line of reasoning, bear in mind that this was done very quickly, and I had not checked it with any engine at the time ...

The entire mode/reasoning that allows the Qe4 "trick" to work is that Black cannot capture on e4 due to the back-rank threat. I errantly thought that KxB/h2 would be a blunder because of ...Qd6+. Now if Kg1, then RxQ is playable, as Black now has the defense of ...Qf8; in response to a check on b1 (at anytime) by the White <♖> ... ... ... and now Black might even emerge ahead in material.

Sorry for the late response.

Jun-18-12  LIFE Master AJ: My web page on this game:
Premium Chessgames Member
  perfidious: <sevenseaman> Droll bit of humour above.

It is regrettable that you do not come by to visit more nowadays, for you are missed.

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