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Aug-12-04
 | | Honza Cervenka: Smejkal's masterpiece. |
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| Aug-12-04 | | suenteus po 147: Never have I seen such anaconda-like pressure exerted on Petrosian himself! He was usually the one doing the squeezing. The final position is also something curious for Petrosian to be facing and not dishing out himself: zugzwang. <Jan> Smejkal; is he a namesake, Honza? |
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| Aug-12-04 | | JustAFish: As far as I can tell 20 Nd5 is an entirely positional sacrifice. But I can't see why it was declined. After 20 ... cxd5 21 exd5 white has two passed pawns that can't yet go anywhere. Would taking the knight have been that bad? |
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| Aug-12-04 | | Calli: He does take a few moves later. Play would be similar but worse for black. White can move the pawns foward via c6,Rd1, Bc5, d6 etc. |
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Aug-12-04
| | Honza Cervenka: <suenteus po 147> Yes, Honza Smejkal is a namesake.:-) |
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Aug-12-04
 | | Benzol: A very fine game. Is there any collection available of Smejkal's games? |
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Aug-13-04
| | Honza Cervenka: <Benzol> Look at this one: Smejkal vs Ljubojevic, 1977 It's another brilliancy of Smejkal (alas, with one little fault). |
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| May-26-09 | | ToTheDeath: 20.Nd5!!
Great game. |
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| Jun-06-12 | | vinidivici: whats the point...20.Nd5.....why? , what if black take that knight?? |
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| Jun-06-12 | | elocym: What if on move 20 black captures the knight? |
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| Jun-06-12 | | rilkefan: Around move 19, entirely unsurprised by white's play, I was trying to figure out how to bring the knight into play in the center via d1 or e2, or maybe doubling rooks on the a file. 17...Bc8 and black's fine. Even 18...Nf6 and the game's nearly equal, as the a file isn't worth much. |
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| Jun-06-12 | | Tiggler: Not too sure about the ending. Does W intend to give up R and d-pawn for B on d8 and then win this pawn ending? (W to move).
click for larger viewI think it is won, but I am a bit shaky about positions like this. |
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| Jun-06-12 | | goodevans: <vinidivici: whats the point...20.Nd5.....why? , what if black take that knight?? elocym: What if on move 20 black captures the knight?> The point is the powerful centralisation of the knight which creates many threats. The reason it can't be taken is that after <20...cxd5 21.exd5> black cannot stop <c6> followed by <Ra7> which would be most unpleasant and pretty much forces black to return the sac'd piece. Of course all of this happened a few moves later anyway when black was a little better placed to deal with it, but it still put him under a lot of pressure. The question I don't have time to look into right now (I'm already late for work!) is what happens if the knight is taken on move 21. |
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| Jun-06-12 | | Tiggler: The finish I had in mind is
42.... Ke7
43.Rb8 Kxd7
44.Rxd8+ Kxd8
45.Kf3 Ke7
46.Ke4 Kf6
click for larger view
47.f3 g5
48.hxg5+ Kxg5
49.Kxe5 h4
50.f4+ Kg4
51.gxh4 Kxh4
52.Kxe6
1-0
Are there any improvements for B? |
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Jun-06-12
 | | beatgiant: <Triggler>
<Are there any improvements for B?>
Instead of 47...g5, how about <47...Kf7> 48. Kxe5 Ke7.I don't think White needs to hurry to swap the rook and pawn for the bishop. 42...Ke7 43. Rb7 looks like an easy win. |
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| Jun-06-12 | | Tiggler: <beatgiant: <Triggler>
<Are there any improvements for B?> Instead of 47...g5, how about <47...Kf7> 48. Kxe5 Ke7.
I don't think White needs to hurry to swap the rook and pawn for the bishop. 42...Ke7 43. Rb7 looks like an easy win.> Thank you, you are correct, too hasty. But White is going to lose the d-pawn soon anyway, and the win will eventually involve swapping off the B and R. I think the following is a good continuation: 42... Ke7
43.Rb7 Kd6
44.Kf3 Kc6
45.Ra7 Bc7
46.Ke4 Kxd7
47.Rxc7+ Kxc7
48.Kxe5 Kd7
49.Kf6 1-0
Do you agree? |
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| Jun-06-12 | | LoveThatJoker: <elocym> I gave 20...cxd5 to Stockfish to analyze for 25 minutes. Here is what it came up with:
20...cxd5 21. exd5 Ra8 22. c6 e4 23. Bf4 Be5 24. Bxe5 Qxe5 25. Rac1 Ba6 26. Bxe4 Re8 27. Bf3 Qf6 28. Rxe8 Rxe8 29. Qc3 Kg7 30. Kg2 Bc8 31. Qa1 h5 32. Rd1 Rd8 33. h4 Rd6 34. Qxf6+ Kxf6 35. Be2 Nd7 36. cxd7 Bxd7 37. f3 Ke7 <+1.45 at a depth of 28> I also let it analyze the game continuation for 25 minutes as well, here is what it came up with for that: 20...Qd7 21. Red1 Qe8 22. Bg5 Rd7 23. Nf6+ Bxf6 24. Bxf6 Rxd1+ 25. Qxd1 Qe6 26. Bd8 Qd7 27. Qxd7 Nxd7 28. Bc7 Rc8 29. Bd6 Ra8 30. Rxa8+ Bxa8 31. h4 f6 32. f4 exf4 33. gxf4 Kf7 34. Bh3 Nf8 35. f5 gxf5 36. Bxf5 h5 37. Bxf8 Kxf8 38. Bg6 Ke7 <+1.53 at a depth of 28> LTJ |
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| Jun-06-12 | | vinidivici: <goodevans> i can understand whats your point. it makes the white's connected pawn becomes very strong at the centre. And opened a-file for white rook just adding the pressure for black. great analysis by the way. |
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| Jun-06-12 | | Cibator: But ... but .... Petrosian's exchange sacs ALWAYS work! What went wrong? ;-) |
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Jun-06-12
 | | Gypsy: < Tiggler: ... But White is going to lose the d-pawn soon anyway, and the win will eventually involve swapping off the B and R. > There are more than one way to skin this cat: (1) You are correct that Black can (and must) deal with the d-pawn. And that will take time which, in turn, White uses to prepare a winning denouement. (2) But, the rook is a strong piece and White by no means needs to trade it back for the pitiful bishop in order to win. For instance, consider this theme: <42...Ke7 43.Kf3 Kxd7 44.Rb7+ Bc7> This horrible self-pin, Bc7, just postpones the inevitable. If <44...K~>, then <45.Rg7...>, and Black K-side pins fall sooner. But, at any rate, there is no permanent way to save Black's pawns in the east. <45.Ke4 Kc6 46.Ra7 Kb6 47.Ra8 Kc6 48.Rg8...> ---
All that said. My personal inclination is to trade down into a clearly won pawns and kings endgame. |
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| Jun-06-12 | | kevin86: While white's rook and pawn pin down black's pieces,the white monarch will raise havoc on black's pawns and will win the day. |
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| Jun-06-12 | | goodevans: <Gypsy: < Tiggler: ... But White is going to lose the d-pawn soon anyway, and the win will eventually involve swapping off the B and R. > There are more than one way to skin this cat:> Indeed there are, and if you want to try out different approaches to winning this endgame then I'd recommend giving Crafty EGT a try: http://www.chessvideos.tv/endgame-t... Enjoy! |
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| Jun-06-12 | | Tiggler: <Gypsy> and <Goodevans> Thank you for your replies.
< Tiggler: ... But White is going to lose the d-pawn soon anyway, and the win will eventually involve swapping off the B and R. > There are more than one way to skin this cat:> Obviouly there are, but I only need one.
If I can demonstrate a win by force that I might find over the board, then I can save the database and engine study for something more difficult. |
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| Jun-06-12 | | chopin4525: "A passed pawn is a criminal which should be kept under lock and key. Mild measures, such as police surveillance, are not sufficient." - Aron Nimzowitsch :) |
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| Jun-06-12 | | newzild: <Tiggler> Your line is a draw because Black can simply let White take the e5 pawn with his king and defend the e6 pawn with his own king. The resulting K+3P vs K+3P is a draw. Some of the other suggestions on this page are also draws because Black can defend the d8 queening square with his king and send his bishop off to attack White's K-side pawn chain. The clearest win I can see is to attack the K-side pawns, thus: 42...Ke7
43. Rb7 Kf6
Black can't move the bishop because White plays 44. d8=Q+ Kxd8 45. Rg7, winning both of Black's K-side pawns. 44. Kf3 Ke7
45. Ke4 Kf6
46. f3 Ba5
Not 46...Be7 47. Rb8. Other moves lose the e5 pawn.
47. Rb8 Ke7
48. Rg8 Kxd7
49. Rxg6
And the rest is child's play. |
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sac: 23.Qe3