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Donato Rivera vs Robert James Fischer
Varna ol (Men) qual-B (1962), Varna BUL, rd 7, Sep-26
Nimzo-Indian Defense: Normal Line (E40)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Mar-06-13
Premium Chessgames Member
  Once: Sometimes we have to make a mistake to get things right. At first I was attracted by the idea of 14...Bxg2, figuring that it would drag the white king to g2 so that I could bounce the black queen off him with check and ...oh, I don't know, do something juicy with that extra queen move.

So my first plan was 14...Bxg2 15. Kxg2 Q-c6/b7+ 16. king moves Queen does something funky.

And I know that's kinda vague, but this is a work in progress. Bear with me, we'll get there in the end.

So then I thought ... what is this funky thing that the queen could do? I've sacked a bish for a pawn and an extra move. I'd better make that extra move count for something. It currently owes me two pawns.

Then I spotted that 16...Qb5 in my line was interesting. This hits the awkward pair of bishops on b2 and b3. White can't protect them both.

Hmmm. Interesting. So does my line win a pawn? The sac of the bish on g2 is only temporary because I win one of the two white bishops? Is that funky enough?

Time to jiggle. (BTW, there's always time to jiggle). That's when I noticed that 14...Qc6 achieves much the same thing, but without the bishop sac. White has to defend against the mate and then I get to play Qb5. In effect, we are bouncing the black queen off a queen threat instead of off a check.

Last spell check to make sure that the queen can escape and white doesn't have any dastardly defences. Can't see a problem. 14...Qc6 it is then.

Mar-06-13  stacase: Threatening mate is nearly always a good move.
Mar-06-13
Premium Chessgames Member
  gofer: Unfortunately, the <Crafty EGT> website throw out this POTD every couple of weeks. So its not difficult when you have seen it before many times...
Mar-06-13
Premium Chessgames Member
  morfishine: Black wins a piece with <14...Qc6 15.f3 Qb5>

*I did a little research; Here, Fischer beats Rivera, a future US Armed Forces Champion (1964)

Fischer actually lost the following game in a simul to another future US Armed Forces Champion: Fischer vs C Powell, 1964

(Powell had quite impressive chess credentials being a 7-time Virginia champion)

Mar-06-13
Premium Chessgames Member
  whiteshark: Like a hot knife through butter.
Mar-06-13  Patriot: I would play 14...Nxb3, getting rid of the bishop pair. 15.Qxb3 Qc6 16.f3 Ng4 17.Re1. Or perhaps 14...Rad8 or 14...Qc6 15.d5 so probably 14...Nxb3 is better. 14...c4 15.Ba4 or 15...Bc2.

I'm not seeing much here. I would play 14...Nxb3.

Mar-06-13  Patriot: Ah ok...a skewer. I didn't see that at all.
Mar-06-13
Premium Chessgames Member
  chrisowen: Aim donot interject bishop bidings ... quibble have doctor in dig 0^0 o bide 14.Qc6 certainly fitted.

A doddle myth in standard curious canape a conc. queen forces it off in pawn, either on black eyes cougar queen swanning b5 dot he math in see er fed

I badge 15.f3 or e4 incede d5 I alive 15...qb5 white cant save b3 or b2 ellucidate it a footed 16.ba4 ps thick one poisoned queen fable knight bishopb2 chalice moot newt he.

Dasher bet bishop ra v i 0l in a cornet 16.Qxb2 see heed ni my warning rook in c1 nt bishop and a devious 17.rf2 I lighted 17...Qxa3 black bales it just in the nick off time.

Sussed in a plate 15.e4 again st is b2 ea v queen b5 a utility 17.bc2 after a lights 16e5ne8 17.bc2 queen add dints trim a marvela 17...Qxb2 the result a namby pamby see a lend ar sale ... in go ok knighta5 in covenant it seem like aid one for.

Mar-06-13  pedro123: Fischer knew how to win material. This type of trick was routine for him. All those years of blitz chess.
Mar-06-13  mistreaver: Wednsday.Black to play. Medium/Easy.14.?
After looking at the position for some 10 minutes, i see no better idea then to play: 14... Qc6
I tried looking at bishop sacrifice, but i don't see anything real there, say: 14...Bxg2
15 Kxg2 Qc6+
16 Kg1 and i don't see how black could continue here. Back to the main line:
15 f3 (the only move to ward of mate, e4 would simply leave a pawn, or subject to the same continuation as in the game) 15... Qb5
and one of the bishops must go.
It took me longer to find it because i was focused on long diagonal and sacrifices on white kingside. Nice example of playing over the whole board.
3/3
Mar-06-13  Mojodomo: <morfishine>'s pointing to Fischer vs C Powell, 1964 is fantastic-- a blitz style game that would usually have spelled victory for Fischer. Nice find!

Also: if you have a certain 4 star general in mind, this is not the Powell you're looking for...

Mar-06-13  snakebyt: I was looking for a decisive mate and plotted to Bishop and Queen that white King to death. I missed the easy access of the back door to the Vatican.
Mar-06-13  MountainMatt: It's Bobby Fischer week! This took a long time for me to see (goes without saying) - at first I thought it must be, MUST be 14...Bxg2, but that really didn't seem to go anywhere. Moving on, I eventually worked out that after 14...Qc6, which must be met with 15. f3, 15...Qb5 will win a bishop. Phew!
Mar-06-13
Premium Chessgames Member
  kevin86: First black threatens mate on the king side,then he pins bishop to bishop. Then he takes the back bishop.

An attack that begins on KN7 ends on QN7!

Mar-06-13
Premium Chessgames Member
  Marmot PFL: Should have bee easy, but it took about 5 minutes. I was looking for something more spectacular, this being a Fischer game.
Mar-06-13  amateur05: Completely missed it! Very difficult for me today.
Mar-06-13
Premium Chessgames Member
  patzer2: Fischer's 14...Qc6 uses a mate threat to effectively allow his Queen to make two consecutive moves ("bouncing" from c6 to b5).

After 14...Qc6 15. f3 Qb5 the Queen's skewer attack on the two Bishops wins a piece.

This simple two-move combination uses at least four tactical themes (by my count). The mate threat 14...Qc6 gains a tempo to reposition the Queen. I don't know if any books on tactics have a name for this maneuver, but <Once>'s comment about <bouncing the queen off a Queen threat instead of a check> gives me the idea of calling it the "Bouncing Queen" tactic. I suppose one could also call it a "Dancing Queen" but the pop group ABBA might object that it's infringing on their most famous song's copyright.

After the "Bouncing Queen" forcing maneuver 14...Qc6! 15. f3 Qb5 , three more tactical themes are in play:

1. "Overloading of Pieces" is involved as the Queen and the Knight attack the light-squared Bishop on b3 with two pieces, which is only protected by one piece.

2. "Pin" tactic is involved as the light Bishop cannot move to avoid the attack of the Queen and Knight without exposing the unprotected dark-squared Bishop on b2 to attack.

3. "Skewer" tactic is involved as the move 15...Qb5 simultaneously attacks both the underprotected Bishop on b3 and the unprotected Bishop on b2 on the same file.

P.S.: Typically in a skewer tactic the piece first under attack is more valuable than the piece behind it. In this case, the more active White squared Bishop barely meets that definition as reflected in the move 16. Ba4 to save it just before resignation after 16...Qxb2 .

Mar-06-13  M.Hassan: "Medium/Easy"
Black to play 14....?
Equal materials

14...........Qc6 threatening mate on g2
15.f3 Qb5 attacking b3 square that is defended by White Queen only but there are two attackers to that square:

16.Ba4 Qxb2
Balck falls ahead by one piece

Mar-06-13
Premium Chessgames Member
  Jambow: Ok I was in the where is the mate mindset, pretty straightforward when looking for material advantage after mate threat.
Mar-06-13
Premium Chessgames Member
  Compound Error: <morfishine>Is that the retired 4 star General, Colin Powell?
Mar-06-13
Premium Chessgames Member
  Compound Error: Before you answer, I now see that <Mojodomo> has preempted my question. I wish sometimes all the pages appear chronologically in one scrolling page!
Mar-07-13
Premium Chessgames Member
  morfishine: <Compound Error> No, this was Charles Powell

What I did was look up Rivera. I found he was active in the US Armed Forces Championship; Then I looked up the History of the US Armed Forces Championship because I wanted to compare when this game was played and when Rivera won that Championship; It was here that I found the Powell Game and then found it was in the <CG> database. Pretty cool, huh?

Nov-21-15  bobbyperez: I think 13.Bc2 is better.
Jul-11-16
Premium Chessgames Member
  zanzibar: Photo from the game the moment before Rivera resigns...

http://www.lecavalier.lu/Olympiade-...

(mis-labeled as Siegen-1970 in the filename, but correctly identified in the caption here:

http://www.lecavalier.lu/History.htm

About ~1/2-way down.)

Oct-15-16
Premium Chessgames Member
  whiteshark: Here's a game-related Fischer photo from the final position:

http://www.lecavalier.lu/Olympiade-...

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