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Lajos Portisch vs Vasily Smyslov
Amsterdam Interzonal (1964), Amsterdam NED, rd 8, May-29
Queen's Indian Defense: Fianchetto. Nimzowitsch Variation Nimzowitsch Attack (E15)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Mar-31-10  mworld: i grabbed at Nxc4 and missed the Mate in 10 Nxg4.
Mar-31-10
Premium Chessgames Member
  kevin86: I saw the whole thing-except I didn't see that the final position was inescapable mate. I thought the solution had to do with promoting the pawn.
Mar-31-10
Premium Chessgames Member
  Jimfromprovidence: Earlier, I liked 52 Qd4+ before playing f3.


click for larger view

If 53 Kh2, then 53...f3 wins a piece.

If 53 Kh1, then 53...Qd1+ 54 Kh2 f3.

Mar-31-10  VincentL: In this "medium" position, the move that pops out at me straight away is 62....Nxg4.

Does it work? Let's see.

Firstly white has mating threats, but nothing immediate, due to black's knight on d7.

So, 62.....Nxg4.

If 63. hxg4 then 63.....Qh4+ 64. Kg1 Qg3+ 65. Kh1 f2. Now the only way to avoid Qg1 mate is to move the bishop. But Bd2/Be3 allows Qh3 mate. If Bg2, black plays Qh4+ and now the white king cannot move to g2. So white only has Bh3 whereupon Qxh3 is mate.

Other white responses on move 63 fail immediately.

63. Bg2 Qxg2 mate. 63. Any other move (apart from the spite check Qb8+). Qh2 mate.

Time to check.

Mar-31-10  VincentL: <Re SRILANKANMASTER>Has anyone ever seen any actual analysis on here from this kibitzer?
Mar-31-10  awfulhangover: Must be my lucky day. I at once saw the whole finish up to 65.-f2. But, it's only wednesday ..
Mar-31-10  Samagonka: I had considered 62Nxg4 but I could'nt really work out the following moves up to mate so I discarded it. Another lesson and I never seem to stop learning...
Mar-31-10  jfshade: Another elegant endgame from the master; the solution was a bit quicker to see than yesterday's, for me. I can't recommend "Smyslov's 125 Selected Games" highly enough. He was a brilliant annotator.
Mar-31-10  Eduardo Leon: Were the h3 pawn not there, ...♕h4+ would end the game. Thus, black forces the removal of the h3 pawn from its place with...

<62...♘xg4 63.hxg4>

The spite check 63.♘e6+ only delays the game one move.

<63...♕h4+ 64.♔g1>

Of course, not 64.♗h3 ♕xh3+ 65.♔g1 ♕g2#.

<64...♕g3+ 65.♔h1 f2 66.♗g2>

The only move to guard both g1 and h3.

<66...♕h4+ 67.♗h3 ♕xh3#>

Mar-31-10  turbo231: Doesn't anyone want to talk about yesterday's puzzle, since EVERY ONE GOT IT WRONG.......
Mar-31-10  turbo231: Fruit 2.3.1 is a free engine.
Mar-31-10  mworld: <Eduardo Leon: Were the h3 pawn not there, ...h4+ would end the game. Thus, black forces the removal of the h3 pawn from its place with... <62...xg4 63.hxg4>

The spite check 63.e6+ only delays the game one move. >

you might want to go recalculate that...it delays it by a lot more moves than that. Superfluous for sure, but good to be able to see these things.

for instance: 66.Ne6+ Kc8 67.Qb7+ Kxb7 68.Bg2+ Kb6 69.Nf4 gxf4 70.a4 Qh4+ 71.Bh3 Qxh3#

Mar-31-10  wals: I was thinking Qg3, f2, Qg1#, but overlooked Qb7, Qc7#

Qb1 was a blunder,( Nxg4 #10.)
Either Nf5 or Qa1 -2.58, was better.
(Rybka 3 1-cpu: 3071mb hash: depth 16)

Mar-31-10
Premium Chessgames Member
  Once: <turbo231: Doesn't anyone want to talk about yesterday's puzzle, since EVERY ONE GOT IT WRONG.......>

I posted a reply to this on yesterday's puzzle page...

Mar-31-10  turbo231:

< Once >

I apologize, I set my board up wrong. I put a bishop at h2 instead of a pawn. I must be going crazy, I'll take that back I'm already crazy. I worked on that puzzle for 20 hours! I'll quietly leave now with my tail tucked in between my legs.

Mar-31-10
Premium Chessgames Member
  Once: <turbo231> No worries - it's very easily done! I've done it many times before.

One thing that might help. I used to set up positions "by hand" for analysis in Fritz. And I found that I kept on making mistakes. Little things like misplacing a pawn, but they sometimes made a lot of difference to the analysis.

A better way is to use cut and paste. Two ways to do this - right click on the position and then "copy position" or right click on the game score and click on "copy game". Then go to Fritz (or whatever engine you use) and click on "paste game" or "paste position". That way you get an exact copy of the position, and a heck of a lot faster than setting it up a piece at a time.

Mar-31-10  turbo231: < Once >

Thank you for your help. I happen to be using Arena 1.1 will that cut and paste work on Arena? I tried it but I must be doing something wrong because I can't get it to work. I right clicked on the chessgames board and selected copy position then went to my Arena board. Were can I find "paste position" on my arena board. I'm a older guy so I'm not that good with computers.

Mar-31-10
Premium Chessgames Member
  Once: <turbo231> Don't know Arena, I'm afraid. Holding control and V often pastes ... might be worth a try,
Mar-31-10
Premium Chessgames Member
  johnlspouge: < <turbo231> wrote: I happen to be using Arena 1.1 will that cut and paste work on Arena? I tried it but I must be doing something wrong because I can't get it to work. >

Hi, <turbo231>.

Pull down the Position Menu. Select Menu->Position->(Copy FEN to Clipboard). With the FEN for Arena's position in the Clipboard, you can paste it anywhere you want.

Mar-31-10
Premium Chessgames Member
  johnlspouge: Wednesday (Medium/Easy)

Portisch vs Smyslov, 1964 (62…?)

Black to play and win.

Material: N for B. The White Kh1 is stalemated. The White Bf1 has the absolute burden of preventing 62…Qg2#, because of the advanced passer Pf3, which Bf1 also blockades. Thus, the White Qb1 has the burden of defending Bf1. The White Ng7 is loose. The Black Nd7 prevents 63.Qb8+. (The configuration Kd8+Nd7 of adjacent squares is generally the strongest defensive position for K+N against Q). The Black Kd8 is also vulnerable to 63.Ne6+.

Candidates (62…): Nxg4, Nxc4

I went for 62…Nxc4, which Toga evaluates at -1.8 P for White, but I missed

62…Nxc4 63.Ne6+ Kc8 64.<Qd3>

which seems the only move to initiate a viable counterattack. Although I initially analyzed as far as

62…Nxg4 63.hxg4 Qh4+ 64.Kg1

I went for 64…<Qxg4+>, which seemed (and is) relatively indecisive, compared to 64…Qg3+.

Mar-31-10  turbo231: How can I transfer a position on a chessgames board to a arena board using "copy position (EPD)"
Mar-31-10  turbo231: I got it! ( on the sixth try )
Mar-31-10  Skylark: Nxg4 is a rather simple move to find - perhaps even easier at the board than in a puzzle mode, because the safety net of perpetual is always there. It took me a little while to see f2 though; I was a little disappointed in how long it took me to visualise this move (it seems like the obvious conclusion to the knight sacrifice). But overall I'm happy having solved it. Part of my problem at the board and what I want to cure with these problems is my economy of time at the board, and in that I think I failed though.
Sep-06-10  jerseybob: I love the way Smyslov plays the opening and early middle game, and I bet Nimzo would love it too. Portisch can't do a thing against Black's central pawn shield in the opening, then with 20..e5 Smyslov entices white into grabbing the "advantage" of a passed pawn, which turns out to be an energy-consuming weakness, easily blockaded.
Apr-01-14  zydeco: In several games in this tournament, knights beat bishops in the endgame.

Maybe 41.Ng2 is an improvement (the knight would stand well if it go to e3). Black can think about pushing 41....g4 to take the f3 square.

Very pretty king walk from 57....Kg8 to 61.....Kd8 -- with the point that, before the king gets to d8, ....Nxg4 never works because white's queen and knight form a mating net.

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