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Murray Chandler vs Jonathan Speelman
BCF-ch (1985), Edinburgh SCO, rd 5, Aug-??
Caro-Kann Defense: Advance. Tal Variation (B12)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Given 8 times; par: 26 [what's this?]

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sac: 19...Nf3+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-24-16  yadasampati: <Penguincw> That looks more like a monday or tuesday puzzle, but surely not a sunday puzzle
Apr-24-16
Premium Chessgames Member
  An Englishman: Good Evening: Sigh--third consecutive Sunday with only a partial credit for seeing only part of the solution. 6.25/7.
Apr-24-16  goldfarbdj: <Penguincw><yadasampati>: To me that's definitely Monday level.
Apr-24-16
Premium Chessgames Member
  Penguincw: Yep, it was. Likely an error (it's happened before). That's why I mentioned it.
Apr-24-16
Premium Chessgames Member
  offramp: Speelman was the winner of another recent Sunday puzzle, which shows what a good player he is.
Apr-24-16  Cheapo by the Dozen: There were so many other apparently winning lines I didn't even look at this one. ... Nxe5 is probably what I would have played.
Apr-24-16  not not: black is pawn up with superior position, so I would do nothing violent, just keep eating his pawns with Qxc3 (now 2 pawns up, and lots of his pieces are hanging)
Apr-24-16
Premium Chessgames Member
  Once: 19...Nf3+ is a stunning move and a worthy Sunday insane puzzle.

However, Fritzie is in a picky move this morning. He would like to point out that 21. f4 keeps black's advantage to less than a prawn (-0.67 at the moment).

24. fxe5 also puts up sterner resistance than 24. Qxh5. Fritzie calls 24. fxe5 as a black advantage of -1.73.

I suppose we ought to applaud Speelman for whipping up a tremendous attack which gives white the chance to go wrong, even if silicon subsequently finds that it's not as convincing as it first looks.

Apr-24-16  scormus: <Once> yes, the vision to see possibilities of gaining advantage, even though it's ot forcing. I think that is what separates the very strong players from the more average ones, and why they generally win from dynamic, unclear positions which the Si would evaluate as balanced. My Si (not surprisingly) rates it te same as yours.

I've been on the receiving end a number of times recently, later analyses showing that I could have saved games with the right move.

Apr-24-16
Premium Chessgames Member
  morfishine: <Penguincw> Why in the world would you even mention this? There's nothing happy about the extermination of 1 million people, quotation marks or not

****

Apr-24-16
Premium Chessgames Member
  perfidious: <MarkThornton....19....Nf3+ caused a sensation....>

One can well imagine; I first spotted this in <New In Chess>. A marvellous conception.

Apr-24-16
Premium Chessgames Member
  thegoodanarchist: <Apr-13-05 Benzol: 19...♘f3+ is a bolt from the blue >

Darn, <Benzol> gave it away before I had a chance to study it.

Apr-24-16  mel gibson: I would not have made this move.
I would have got the black Queen out of the fork by the white Knight landing on b7 and just taken the pawn on c3.

Anyway - the computer agrees with Speelman.
Depth 21, Black score = +0.8

19... N-f3+

Apr-24-16  alphee: Definitely missed this one.
Apr-24-16
Premium Chessgames Member
  Penguincw: < morfishine: <Penguincw> Why in the world would you even mention this? There's nothing happy about the extermination of 1 million people, quotation marks or not >

Well, perhaps to bring recognition and awareness to this horrible event.

The reason why I even mentioned the word "happy" was that I didn't know how to start off the sentence (perhaps I should've started with "Today marks 101 years since ...".

Apr-24-16
Premium Chessgames Member
  MissScarlett: Great, a virtue signalling pissing contest.
Apr-24-16
Premium Chessgames Member
  agb2002: Black has a knight and a pawn for a bishop.

White threatens 20.cxd4 and 20.Nxb7.

Black has several options, 19... Nxe5, 19... Qxe5, 19... Qxc3 and 19... Nf3+ (to clear the d-file).

In the case of 19... Nxe5 20.cxd4 Nxd3 21.Nxb7 Qf5 22.Nxd8 and I'm not sure whether Black has enough compensation for the exchange.

-----

19... Qxe5 looks worse due to 20.Nxb7 with the double threat 21.Nxd8 and 21.cxd4.

-----

19... Qxc3 seems to be more promising. For example, 20.Rc1 Qa3 21.Nxb7 Nxe5 22.Nxd8 Rxd8 and the bishop loks lost due to Ndf3+.

-----

Finally, 19... Nf3+ followed by 20... Nxe5 exerts pressure along the d-file. For example, 20.Qxf3 Nxe5 21.Qg3 Rxd6 22.Qxg7 Qxc3 ends up two pawns ahead (23.Qxh8 Nf3+ and 24... Qxh8).

-----

I think I'd play 19... Qxc3.

Apr-24-16
Premium Chessgames Member
  agb2002: Probably I paid too much attention to Carlsen's game.
Apr-24-16
Premium Chessgames Member
  alfiere nero: So ... that's how you play chess! What the heck am I playing?? Powerful endgame!
Apr-24-16
Premium Chessgames Member
  Richard Taylor: I don't even try to work these "insane" ones out these days, too time consuming, and I usually miss too much But I was interested to see a game by NZ's GM Chandler (our only GM!) and GM Speelman an ingenious player who once beat Kasparov in a rapid.

Murray doesn't play much chess now but concentrates on being the President of NZ Chess and his Gambit (Chess) Books business, and the local chess centre.

Apr-24-16  devere: 19...Qxc3 and Nf3+ are about equally strong, both giving Black the advantage, but Nf3+ is more difficult to defend against over the board, so it was the best practical chance. White needed to play 21.f4! before Nxb7 in order to defend successfully. I had no problem seeing both Qxc3 and Nf3+, so I'd rate this problem medium+ in difficulty, not "insane".
Apr-24-16  RandomVisitor: After 19...Nf3+ 20.gxf3 Nxe5 21.<f4> Nxd3 22.Nxb7


click for larger view

Komodo-9.42-64bit:

-0.95/42 22...Qd5 23.c4 Qxc4 24.Nxd8 Nxf4 25.Re1 Rxd8 26.Qb3 Qc5 27.Rad1 Rd5 28.Qe3 Rf5 29.Qxc5+ Rxc5 30.Kf1 Ra5 31.Rd2 Nd5 32.Rb1 f5 33.Rc2 c5 34.Rb8 c4 35.Rxc4 Rxa2 36.Rbc8 a5 37.Rh8 g6 38.Ra8 Kf7 39.Ra6 Ra1+ 40.Kg2 Ra3 41.Kf1 Ra2 42.Ra7+ Kf6 43.Ra6 Ra1+ 44.Kg2 Ra3 45.Kf1 g5 46.Rc5 Ra1+ 47.Kg2 Nf4+ 48.Kh2 Nd3 49.hxg5+

-0.80/42 22...Qf5 23.Nxd8 Rxd8 24.Qf3 Kf8 25.Rfd1 g6 26.Rab1 Kg7 27.Rb4 c5 28.Ra4 a6 29.Kh2 c4 30.Rxc4 Ne5 31.Qe2 Rxd1 32.Qxe5+ Qxe5 33.fxe5 Rd2 34.Kg3 Rxa2 35.f3 a5 36.Rc7 a4 37.Ra7 a3 38.c4 Re2 39.Kf4 a2 40.c5 Rc2 41.c6 Kh6 42.c7 Rxc7 43.Rxa2 Rc4+ 44.Kg3 g5 45.hxg5+ Kxg5 46.Ra7 Rf4 47.Rc7 h4+ 48.Kg2 Kg6 49.Ra7 h3+ 50.Kg3 h2 51.Kxh2 Rxf3 52.Rc7

Apr-25-16  mel gibson: Just tried 19...Qxc3

and it works just fine.
Black wins according to the computer.

Apr-26-16
Premium Chessgames Member
  CHESSTTCAMPS: In this open, messy middle-game position, black has N+P for a bishop. White has two distinct threats, cxd4 and Nxb7, both winning material. But black has three pawn snatches that initially appear to be reasonable candidates: Qxe5, Nxe5, and Qxc3.

Candidate I:

Remove guard for Nd6 and centralize Q quickly.

19... Qxe5 20.Nxb7 (cxd4? Qxd6 and black is doing well) Nf5 (20... Rb8 21.cxd4 Qxd4 21.Na5 to be followed by Nb3 and I don't see compensation for white's extra piece) 21.Nxd8 Rxd8 22.Qxh5 to be followed by 23.Bxf5 and I don't see sufficient compensation for black's exchange deficit.

Candidate II:

Remove guard for Nd6, activate N, and open d-file quickly.

19... Nxe5

A.20.Nxb7 Qxc3 21.Nxd8 Rxd8 22.Be2 Ndf3+ 23.Bxf3 Rxd1 24.Raxd1 (Bxd1? Qxa1) Nxf3+ 25.gxf3 Qxf3 26.Rd4 (to protect h4) e5 and black has Q+3 pawns for two rooks with excellent winning chances imo.

B.20.cxd4 Rxd6 21.dxe5 Qxe5 with three pawns for the bishop and faster mobilization of the major pieces looks like an edge for black.

Candidate III:

Protect Nd4 first.

19... Qxc3 looks safe, but not sharp enough.

All I have time for - time to review.

Apr-26-16
Premium Chessgames Member
  CHESSTTCAMPS: Didn't even consider the candidate played, the sharpest available. Speelman was an outstanding and far-sighted tactician before he became a GM, as I found when I played him OTB in 1974.
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