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Francisco Javier Sanchez Guirado vs Ruslan Ponomariov
Alicante op (1997), rd 6
Caro-Kann Defense: Panov Attack. Fianchetto Defense Fianchetto Gambit (B13)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Nov-16-12  Alphastar: <S A G A R: At 6th move ,white plays 6.cxd5 .. black plays 6... Bg7. I wonder why black didn't play 6... Nxd5. >

Because 7. Qb3 Nxc3 8. Bc4! is considered problematic for black.

Nov-16-12  Castleinthesky: This was an easier puzzle than yesterday, as the weakness is apparent. The full follow through has a number of variations, all of which lose for black.
Nov-16-12  LIFE Master AJ: This was tough. I found 21.NxP/d6!, after just a couple of minutes ... but finding Black's reply of ...RxB/e3! took quite a bit of time. (5-10 minutes.) And working out the main part of the whole combination took close to 30 minutes. Either I am getting old, or this problem was a lot tougher than it first appeared.
Nov-16-12  LIFE Master AJ: 24.Ne4! was a good move, I am sure White saw it before taking on d6.
Nov-16-12  LIFE Master AJ: 28...BxN/d7??; is met by a rare mate; 29.Rc7+ and 30.RxN/b6#.


click for larger view

Nov-16-12  LIFE Master AJ: <Morf> Sanchez Guirado is no fish ... he is an IM, same age as me. (I met him many years ago, when I was in the military.)

http://ratings.fide.com/card.phtml?...

Nov-16-12
Premium Chessgames Member
  chrisowen: Mile go, deemed in perk it flash in e4 to a d6's tool it rechanging

rook ogle in corridor knight, doesnt it I annex us together e8 paint

a poor picture no b5 lack swanz damage ne4 stymmy in wall, flower it 15...bd7 in permanent thorn to pick on a cycle in b6 or came in

borrow a lean build (inclusive so) in f6xd5 position equality oh,

ace lip in bd7 white gets i tantric in g3 e4 knights and roocks

sediment staunch in a deep misjudge bad d7 in sassy it open 15.pd5 very strong.

Nov-16-12
Premium Chessgames Member
  chrisowen: I new doing after bd7 you lent in also 18...nh5 faff around foot he

tender feed dig it is take in e4 get pieces off, finally 20...re8

dont upset apple cart mario before the horse leap in d6, counting up

ply it stare in would face be a 21.Nxd6, in for key you see

nincompoop in c8 heck agile e3 has b6 rote ammend knight was needed

to guard in b6 22.kc8 and tactics abound in 5b bull shy it knock off

in c6 look for now light has b5 engage d6 everything kaputz elle

darius king children bereft, black elects e3 on demand, wrestlings

ponos game this re-joinder method allows knightd6 in b7+ to gate

again kingc7 rooke1xe3 on goKxb7 wangle knightc3 one dip in sate

24.Ne4 rook heading to b3+ pawn it jiggle d6 down e4 bind c5 open in

kinga7 eg light has no reiterance in packing 27.Nc5+ in general aims

it signal in double brevity ease cinch a benign king allowed fin d7?


click for larger view

Nov-16-12  James D Flynn: Material is equal but Black is seriously cramped by the White rooks. If White could check on b6 with his B the K would be forced out into the Rs line of fire. 21.Nxd6 Rxe3(if Nxd6 22.Bb6+ Kc8 23. Nb5+ (if Ne4+d8 26.Rxe8+ Bxe8 27.N )Kb8 24.Nxd6 Rxe1 25.Rxe1 Bf6(the threat of Re7 must be stopped) 26.Rc1(now the threat is Rc7) Bd8 27.Bxd8 Ka2 28.Be7 and White is a piece up and the threat of Rc7 winning more material cannot be countered.) Bc6(if Kb8 24.Bc7+ Kc8 25.Nxd6#) 27.Rxe8+ Kd7 28.Rxa8 with overwhelming material advantage)22.Nxb7+ Kc7 23.Rxe3 Kxb7(else the N retreats and White has won the exchange and 2 pawns) 24.Ne4 (now the threat of 25.Rb3+ if Ka7 26.Rc7# will force the win of at least a piece) Nb6 25.Nd6+ Kb8(if Ka7 26.Rc7+ Kb8 27.Rb&#) 26.Rb3 Bb5 27.a4 Nxa4 28.Bxb5 axb5 29.Rb7# Ka6 30.Rc6+ Ka5 31.Nc4#
Nov-16-12  David2009: F J Sanchez Guirado vs Ponomariov, 1997 White 21?

Like almosty everyone else, I went for 21.Nxd6 which seemed safe (R+PP for two pieces in the game line). However I am struggling against Crafty End Game Trainer. Without firing up my silicon friend Herr Fritz, I can't find a clear win. The EGT excels in these messy, tactical positions: it even gives me a free double check and I still can't beat it (unaided). A reminder of the puzzle position:


click for larger view

with EGT interactive link http://www.chessvideos.tv/endgame-t...

Isn't Natalia Pogonina doing well in the WWCC2012? (links: http://chess2012.ugrasport.com/ and http://en.wikipedia.org/wiki/Women%...)? Like many others I appreciate her excellent occasional kibitzing and her fine efforts against The World.

Nov-16-12
Premium Chessgames Member
  Jimfromprovidence: This puzzle is definitely amazing because of the fact that 24 Ne4 wins in all variations and a lot of them are pretty tricky to evaluate

I looked in detail at the line 24 Ne4 Nf6 25 Rb3+.


click for larger view

Black has only one move here, 25…Bb5, as 25…Kb7 loses to 26 Rc7# and 25… Nb6 loses to 26 Nd6+ with forced mate.

So in order to prevent mate black has to pin his bishop.

Now white wins after 26 Nxf6 Bxf6 27 a4.


click for larger view

Nov-16-12
Premium Chessgames Member
  kevin86: White lures the king away and rounds him up.
Nov-16-12
Premium Chessgames Member
  Check It Out: <Abdel Irada> the Rinus award is a premium membership awarded to posters who contribute to chessgames in an exemplary fashion. It is named after a wonderful member who passed away some years ago.
Nov-16-12
Premium Chessgames Member
  perfidious: Been here a long time, but till now had never heard of <Rinus>. Pity we never met here at CG; sounds like a grand fellow.
Nov-16-12
Premium Chessgames Member
  Check It Out: Here's some background info I dug up. It looks like the scholarship is reserved for The World members.

<chessgames.com: <The Rinus Scholarship> For several years, User: chesstoplay (Peter) devised and managed "The Rinus Scholarship", an effort designed to give premium memberships to people who contribute to the World Team's success. The Rinus Scholarship is named in memory of the Chessgames member User: rinus who passed away in August of 2008. Rinus was the first recipient of this award, and remains a shining inspiration to the World Team.

Sadly, due to health problems Peter can no longer continue this effort. Fortunately, some members stepped forward to take over the job.

To help ensure its success, we have now incorporated the Rinus Scholarship directly into our website, allowing anybody to donate a premium account directly to the fund. This fund will then release premium accounts to members of the World Team, at the judgment of the new managers.

From time to time you'll be seeing a small banner ad to the left of the board soliciting donations. The proceeds from donations made to this fund will not only purchase a premium membership for a deserving user who may not otherwise be able to afford one, but also will go into a special account used to finance future Chessgames Challenges. In this way, we hope to hire the very finest grandmasters in the world to step forward and take the challenge. So each dollar donated serves two purposes: you put a smile on somebody's face today, and in the future you put a smile on thousands of people's faces when a new Chessgames Challenge begins.

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Nov-16-12  hms123: <CheckItOut> <perfidious> <Abdel Irada>

I will be glad to discuss the <Rinus Award> at my forum. I am currently spear-heading the comittee (which includes <WinKing> and <kutztown46>. It is a little off-topic here. Thanks--hms

Nov-16-12  Patriot: I'm either on the wrong track or this is one of the toughest Friday's I've seen. I spent a long time on this, with so many checks, captures, and threats. I'm hoping the move is 21.Nxd6:

21...Nxd6 22.Bb6+ Kc8 23.Nb5+ Kb8 (23...Bc6 24.Nxd6+ and 25.dxc6 ) 24.Bc7+ Kc8 25.Nxd6#

21...Rxe3 22.Nxb7+ Kc7 23.Rxe3 Kxb7

21...Bxc3 22.Rxc3 Nxd6? 23.Bb6#

I'm not so sure about this so I'm very curious to see what happened!

Nov-16-12  Patriot: In my first line, 23...Bc6 24.Nxd6+, I really didn't look closely. 24...Kd7 25.Nxe8 or 24...Kb8 25.Rxe8+ Bxe8 26.Rc8#. Luckily 25.dxc6 also wins in both variations.
Nov-16-12  Patriot: <<rilkefan>: <sofouuk> 24.Ne4 does seem to be the real key, though stockfish thinks white is up a pawn even after something not especially motivated like Nd1 or d6. The move I might have played otb, 24.g3, is +1.4.>

Houdini agrees that 24.Ne4 is the only winning move (+2.57) while the next best is +0.68 at 20-ply. But I really didn't think it was necessary to calculate further here since white is up 2 pawns and a rook for 2 pieces which is generally an advantage. I would only look further if black had direct counterplay which I don't see. Finding 24.Ne4 should be determined, in my opinion, when that position is reached OTB--but that's just me.

Nov-16-12  Abdel Irada: <Check It Out>, <hms123>: Thank you for the information. As a relative newcomer, I was unfamiliar with both <Rinus> and the eponymous award.
Nov-16-12  Abdel Irada: Correction to yesterday's analysis:

In my solution post, considering line (3) with 21. Nxd6, Rxe3; 22. Nxb7, Kc7, I extolled as a "key move" the apparently tempo-gaining 23. Ne4† (to which I gave an exclamation point), reasoning that the knight would invade on c5 to bring home the attack.

I have now revisited this line in light of <LTJ>'s "tale of the tape," and to my chagrin I find that my touted finesse appears insufficient for a win. After 23. Ne4?, Rc3!; 24. Nxc3, Bxc3!!, White must recapture on c3 with the rook or permit the closing of the c-file he needs to continue the attack. After he does this, however, he finds that his rooks now trip over one another, as they do not if he plays 23. Rxe3 as in the game.

The critical difference is that with the rook held on c1, the black king can't flee toward the center, and meanwhile the recapture on e3 doubles as a rook lift, enabling that rook to enter the fray via b3 with check. After 23. Ne4, however, Black's zwischenzug removes the rook lift, leaving White in a position in which he must first spend a tempo shifting 25. Rec1 before he can use the rook on c3 to check on the b-file.

What a difference that tempo makes. As far as I can determine, the whole outcome of the game turns on it. For after 25. Rec1, Nb6, there doesn't appear to be a way for White to continue the attack in any useful sense: On 26. Rc7†, Kb8; 27. d6, Nf6; 28. Be2, Nfd5, White has significant pressure, but his capacity to convert it into a win appears problematic.

All things considered, then, the game continuation (23. Rxe3) is clearly superior to my previous recommendation (23. Ne4).

Nov-16-12  Patriot: <Abdel Irada> Believe it or not, I saw the 23.Ne4 Rc3! idea and decided it was probably best to go with the simple 23.Rxe3.

However, as usual, great job on your analysis! I'm amazed at how deep you're able to visualize these problems!

Nov-16-12  rilkefan: <<Patriot>: Houdini agrees that 24.Ne4 is the only winning move (+2.57)>

I wouldn't call this agreeing. I was quoting a depth of 25 (at 27, 0.9 Gnodes, I'm getting +1.4 with a mainline of the enginesque ...Kc7 over the more human ...Nd6), and I'd call a pawn and a half won.

I'm not familiar with running Houdini at all but I try to go well over 20 ply or several tenths of a Gnode at least before citing sf. At 27 ply, 0.3 Gnodes, sf says 24.Ne4 is +3.9.

Nov-16-12  Abdel Irada: <Patriot: I'm amazed at how deep you're able to visualize these problems!>

Thank you, but don't give me too much credit. During the post-solution analyses, I'm using a board and moving pieces about.

Nov-20-12  sushijunkie: Thanks for the kind words, <Abdel>. I will take partial credit if I feel comfortable that I got enough in advance to make the initial choice sound, and that I'd be likely to find the continuation OTB. That wasn't the case here.

The week before I was 6/7 (No Sunday, of course), this week I ended up an abysmal 3/7. Burnout, I think. Try again next week... :)

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