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Veselin Topalov vs Thomas Paehtz Sr
Tradewise Gibraltar (2017), Catalan Bay GIB, rd 1, Jan-24
Horwitz Defense: General (A40)  ·  1-0

ANALYSIS [x]

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sac: 15.Bxd5+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jun-20-18
Premium Chessgames Member
  ChessHigherCat: <Walter Glattke> Why 18. Rc1??:

1) +3.61 (22 ply) 18.Qxb5 a6 19.Qc6 Ne4 20.Nb3 Rf6 21.Qd7 Bf8 22.Rc1 Qxd7 23.Rxd7 Rb6 24.Be5 a5 25.Rc2 Nd6 26.Nc5 Nc4 27.Rxd5 Rxb2 28.Rxb2 Nxb2 29.Ne6 Kg8

Jun-20-18  AlicesKnight: Found it after a little thought; not spectacular but good tactical astuteness, winning 2 pawns and a decisive positional plus.
Jun-20-18  Walter Glattke: Of Course, white wins the ending with more pawns, if not 2 rooks would be brought at the 7th raw.
Jun-20-18
Premium Chessgames Member
  malt: Looked at a4 first, then seen

15.B:d5 cd5 16.Rc7 Nb6 (16...Bc8 17.Qd5+ )17.R:b7

Jun-20-18  zb2cr: Missed this one, because I was hung up on taking the Pawn with th Bishop had to be part of a mating attack, which I didn't see.
Jun-20-18  hdcc: One's eye is naturally drawn to the diagonals, with the cross-fire of white's queen/bishops and the vulnerable black king. The tricky part for me was understanding how to take advantage of the position; however I eventually twigged to the fact that the rook could invade with impunity after the bishop sac. Not nearly as hard as yesterday's puzzle - it's interesting to discover that I was not the only one who found the pawn move to be anything but obvious (it took me about twenty five minutes to work it out). It's an interesting reflection on chess psychology that something so simple could be so hard to spot, and it makes me wonder how many such straightforward killer pawn moves I've missed OTB.
Jun-20-18  takchess: Didnt spend the time needed today but identified the weakness.
Jun-20-18
Premium Chessgames Member
  catlover: Wow...this has been a rough week for me with the puzzles. I saw the three moves that were played in the game, but was not sure that white had a forced win.

I see from <agb2002>'s analysis that white is better in all the variations.

I guess I expected to find a solution where white was a piece up, but two pawns up was evidently enough to convince Paetz to throw in the towel.

Jun-20-18  mel gibson: A 2 pawn advantage search is not the
kind of puzzle I was looking for.
I didn't see it.
No way I would have resigned if I was Black.
Jun-20-18  beenthere240: It's real easy to play the Dutch badly.
Jun-20-18  njchess: I remembered this game because it was so short. White will have a 2 pawn advantage plus several tempi. Black has few, if any attacking options. His best is probably ♘f6, ♘e4 but then what? Meanwhile, White can steamroll the queen side forcing Black to concede more material.

Personally, I think Black started to go wrong with 7. ... ♘e4 and 10. ... d5 and finally, the real blunder 14. ... ♘d7. But then, I'm not an expert on the Horwitz Defense.

Jun-20-18
Premium Chessgames Member
  ChessHigherCat: <njchess> I wouldn't like to play this opening with black in any case but you're right that SF prefers 7...0-0:

1) +0.24 (21 ply) 7...O-O 8.Nc3 Nh5 9.d5 Nxf4 10.exf4 c6 11.Qd2 Bf6 12.Rad1 cxd5

At least in the game line, Ne4 just wastes 3 tempos to develop white's knight on b1!

Jun-20-18  ajile: This seems like a classic example of how the Stonewall Dutch defense can be exploited using the c file, weak b3-g8 diagonal and weak light central and k-side squares. Probably why the Leningrad version is more popular today than the Stonewall setup.
Jun-20-18  Patriot: <agb2002> On variation B after 19...Ra8? 20.Qxd5+ followed by 21.Qxd7
Jun-20-18  cormier:


click for larger view

Analysis by Houdini 4: d 26 dpa done

<1. + / = (0.41): 13.Be2> Nd7 14.h3 c5 15.Bf3 Nf6 16.Qa4 Qe8 17.Qxe8 Raxe8 18.dxc5 bxc5 19.Rfd1 Ne4 20.Be2 Rf7 21.b3 g6 22.f3 Nf6 23.Bb5 Ref8 24.Nb1 Rd8 25.Nc3 c4 26.Bc7 Rc8 27.Be5

<2. + / = (0.37): 13.h3> Bd6 14.Re1 Bxf4 15.exf4 Nd7 16.g3 Nf6 17.Bg2 Qd6 18.Nf3 c5 19.Ne5 Rfc8 20.Bf1 g6 21.Qa4 c4 22.Bg2 Ne4 23.Re3 Kg7 24.Rce1 Re8 25.Bxe4 fxe4 26.Kg2 a5 27.Qc2

Jun-20-18  cormier:


click for larger view

Analysis by Houdini 4

<10...Bxf3> 11.Qxf3 Nc6 12.Rfd1 Bf6 13.h3 Kh8 14.Rac1 Nb4 15.a3 Nd3 16.Rc2 Nxf4 17.Qxf4 d6 18.Nf3 Qe7 19.Re2 Rae8 20.b3 Rd8 21.b4 g5 22.Qg3 Kg7 23.e4 fxe4 24.Rxe4 d5 25.cxd5 Rxd5 26.Qg4 + / = (0.27) Depth: 25

Jun-20-18  Patriot: <agb2002> Also on variation <A) 16... Ba6 17.Qxd5+ followed by 18.Rxd7 + - [N+2P vs b]> the computer may even prefer <18.Rxd7> but this reminds me during lessons with a master where he would suggest <18.Qxd7> to offer even trades when ahead in material.
Jun-21-18
Premium Chessgames Member
  agb2002: <Patriot: <agb2002> Also on variation <A) 16... Ba6 17.Qxd5+ followed by 18.Rxd7 + - [N+2P vs b]> the computer may even prefer <18.Rxd7> but this reminds me during lessons with a master where he would suggest <18.Qxd7> to offer even trades when ahead in material.>

Yes, I usually prefer trades to win the endgame calmly, but another point of view is to keep the better pieces instead of trading them for worse pieces and have chances of a quicker win.

Jun-21-18  Patriot: <agb2002> Yes that's a good point also. The flip side is that leaves black with the most dangerous piece for counterplay and to complicate the game. Unless you have calculated a win you are wagering that you will not make any human errors. This is the difference with human chess - a computer isn't going to overlook anything.
Aug-11-18
Premium Chessgames Member
  Gregor Samsa Mendel: I remember getting this one the first time around.
Aug-11-18  saturn2: I controlled it again. In chess omly one piece on a different square can change everything. Maybe there is somebody who wants to test us. You have to be diffident in life and chess.
Aug-11-18
Premium Chessgames Member
  Penguincw: Today is an old Wednesday puzzle. I thought this puzzle would be a good Wednesday puzzle. It was a POTD on <cg> before, but it was a Friday puzzle. Oh well. Good enough?

23.?


click for larger view

Solution: Kasparov vs Karpov, 1985

Aug-11-18
Premium Chessgames Member
  malt: Thank you <penguin> for the puzzle, 23.Q:d7 I did not expect a weekend one (cold feet)
I had one to put forward.
Aug-11-18
Premium Chessgames Member
  Penguincw: Hi <malt>, and you're welcome. Go ahead and put up a puzzle (today or tomorrow). Remember, the one who posts the first puzzle never gets a puzzle for himself to solve. ;)
Aug-11-18  CHESSTTCAMPS: Material is even, but white's bishops and queen are more active than their black counterparts. White's strong queen position suggests a breakthrough sac at d5 to penetrate with the rook.

15.Bxd5+! cxd5 (Kh8 16.Bxc6 wins two pawns with a much stronger position) 16.Rc7 gets back the piece with substantial interest:

A. 16... Rb8 17.Rxb7! Rxb7 18.Qxd5+ Kh8 19.Qxb7 a6 20.Rc1 with 2 extra pawns plus big positional advantage.

B. 16... g5 17.Rxb7 gxf4 18.Qxd5+ Kh8 (Rf7? 19.Rxd7 Qe8/f8 20.Rxe7 wins) 19.Qxd7 Qxd7 20.Rxd7 (2 pawns+ advantage)

C. 16... Ba6 17.Qxd5+ Kh8 18.Qxd7 (2 pawns+ advantage)

Probably intended as a two star puzzle.

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