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Arni H Kristjansson vs Ingimar Brynjolfsson
Iceland (1995) (correspondence), corr
Sicilian Defense: Najdorf Variation. Poisoned Pawn Accepted (B97)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Dec-04-05
Premium Chessgames Member
  Richard Taylor: I thought Nf6+ is winning - still do
Dec-04-05  EmperorAtahualpa: I got a part of today's puzzle! I saw the first move 26.Nxf6+ and also the continuation if Black's king takes the pawn (26...Kxe7), but I overlooked the (more difficult) part of the puzzle after Black moves 26...Kf7).

A very interesting and original puzzle for today!

Dec-04-05  cyclemath: <Cogano> The queen checks cannot run out. Black has nothing to block with. And his king cannot get to d8 because White will check on the h4-d8 diagonal when the king is on e7. And his king cannot get to d5 or f5 because of White's e pawn. So the king is trapped for ever in the top right corner of the board.
Dec-04-05
Premium Chessgames Member
  Richard Taylor: lol I deluded that the pawn was taken but still on e7 so that after the checks etc White won by queening and threatening to Q but there is no pawn on e7 - more chess blindness - is there an antibiotic for Chess blindess?
Dec-04-05  dakgootje: Calculated a draw myself through: 25. ♘xf6 ♔xe7 26. ♘d5 ♔d7 27. ♕e7 ♔c6 28. ♕c7 ♔b5 29. ♕a5 ♔c4 30. ♕c3 ♔b5 and theres a draw by repitition of moves. Did see the 25. ...♔f7 however i didnt see a draw/win for white there, however i thought white would be happy with a draw here
Dec-04-05  dakgootje: ow...in my previous line 29. ♕a5 ♔c4 30. ♕a4 ♕b4 31. ♕xb4# so black doesnt go to the c4-square so white has his draw a little earlier
Dec-04-05  dakgootje: <Richard Taylor> try some vodka and it wont happen anymore that you overlook a piece in a complicated variation, in fact if you drink enough you wont see the whole chessboard anymore let alone the pieces or a variation! :)
Dec-04-05  erimiro1: <dakgootje>After 29.Qa5, comes 29.- K:a5. White has to play 29.Q:b7+ Ka5 etc. (see my earlier notes). The position we get is complicated to be analyzed without a board or a computer.
Dec-04-05  dakgootje: <erimiro1> lol well good point. See here an other example of chess blindess when youre not using a board or chess program :-). however i normally think analysing, without a computer is better because first of all you learn much more by trying to see the numberous good moves, and it improves your seeking and hopefully finding of creative and difficult-to-see-moves a lot. However sometimes if a position is really complicated with lots of good moves a computer program is good. note however that a program can be terribly wrong sometimes though
Dec-04-05  panthercat: <DAL9000> Unless I'm overlooking something (and I might be, since I'm not using a board), there is no pawn on e7 by the time 30...Bxd5 rolls around in the line I mentioned (having been taken on 25...Kxe7).

<shyamsg> You're right - white's better move is 27. Qxh7+. I think I overlooked it because I thought the king was still on e7, so the check could be blocked by 27...Bf7. (Oops.) Makes you wonder how I managed to put together an accurate line to begin with...:)

Dec-04-05  erimiro1: <dakgootje>100% agree, about computers. Chess is made for humans, not machines, and errors are part of the game. Like you, I analyze the positions of chessgames.com by diagrams only, so many times I miss things. That's why I'm not sure about the position after 25.- K:e7 26.Nd5+ Kd7 27.Qe7+ Kc6 28.Qc7+ Kb5 29.Q:b7+ Ka5(! the only move) 30.Q:a8 Q:c2
Dec-04-05  snowie1: <DAL9000> Yer right about BxN and spoils the soup. Living in AZ, I have a couple of hours to play with the puzzles before retiring, and I finally gave up on this one. W squandered several good opportunities. Lastly, I tried 25.Qh5+..Bf7 26.Nxf6+..Kxe7 27.Qg5..now the K automatically moves into a bit of trouble. But besides picking up the B, unless B blunders, it's curtains for W.
Dec-04-05  panthercat: <erimiro1> I think after 30...Qc2 black has the advantage (assuming he doesn't make any serious mistakes). For example: 31. Qd8+ Ka4 (31...Kb5?? 32. Qb6+ Kc4 (32...Ka4 33. Qb4#) 33. Ne3+) 32. Qe8+ Ka3 and now white has run out of checks.
Dec-04-05  TTLump: like <Richard Taylor> I had a bad case of chess blindness on this one. After 30 minutes of staring at the position, I thought I had found a win for white. I saw the first move 25. Nxf6+ Kf7 (I also saw that black coudn't take the pawn on e7 because of 26.Nd5++, etc.)

Trying to visualize the sequence of positions in my head, I could see that with the King on f7, Qg7 would be mate, but since I couldn't get there in one move, I played 26.Qg5 (this protects the Knight and also indirectly the e7 pawn because of the double-discovered check mentioned above) and black has only three ways to prevent Qg7# (2 of which I had a decisive response for but the third I didn't see at all ... 27... Kxg7!).

I am curious how long an average GM would need to look at this position as white before figuring out that forcing the draw was his only option.

Dec-04-05  dakgootje: To say something about chess blindness: It is easier too miss such things when you have only diagrams or play with computer even if it is 3D and such, as it is just not real. This way, youll see nice tactics faster (if there is not said white/black to play) OTB then when you are playing on the computer. Because of this many (note: not all) players have a higher rating in real life then like at playchess.com . And because of this, dont worry if you have serious problems of(with?) chess blindness here as you definately wont have it as much OTB
Dec-04-05  erimiro1: <panthercat>I was thinking about 31.h3, and not checking the black king as you tried. Then, white makes an interesting trap: if now 31.-Q:e4?? 32.Qd8+ Ka4 33.Nc3+ and wins. Otherwise I keep telling, that I need a board or computer to tell more about the position.
Dec-04-05  TTLump: <al wazir: What happens after 25...Kxe7 ? My analysis is 26. Nd5+ Kd7 27. Qe7+ Kc6 28. Qc7+ Kb5 29. a4+ Kc4 30. Nb6+ Kd4. Now white has no useful checks. After 31. Nxa8 Qxc7 32. Nxc7 Bd7, white loses at least one pawn and the game.>

White has a better continuation ...
after 25...Kxe7,
26. Nd5+ Kd7
27. Qxh7+ Kc8
28. Qh8+ Kd7
29. Qg7+ Kc6
30. Qc7+ Kb5
31. Qxb7+ Ka5
32. Qxa8 Bxd5
33. Qxd5

In this position, white is up 2 pawns, has several promising threats to win more material and after any simplifying exchanges, is certain to be the first to promote a pawn.

Dec-04-05  TTLump: after 13... e5, ChessMaster (at 11-ply)evaluates the position slightly in favor of Black. The actual move, 14.Ne6 gets a -2.00 score. ChessMaster's best move for white is 14.Nb3, but still with a negative score of -.40

After studying 14.Ne6 and the ensuing continuation, I am at a loss to see what white was trying to accomplish unless this is a speculative sacrifice with no clear plan in mind. There was no point that I could see where Black could go wrong except by making an outright blunder. Even the obvious 17...Bxe7, which Black correctly avoids in the actual game, still wins for Black.

Dec-04-05
Premium Chessgames Member
  al wazir: <TTLump: White has a better continuation ... after 25...Kxe7, 26. Nd5+ Kd7
27. Qxh7+ Kc8
28. Qh8+ Kd7
29. Qg7+ Kc6
30 Qc7+ Kb5
31. Qxb7+ Ka5
32. Qxa8...>

32. Qxa8 is answered by 32...Qxc2, threatening mate. There follows 33. Qd8+ Kxa4 34. Nb6+ (34. Qe8+ Ka3) Kb3. White has run out of checks and now must play 35. h3, giving black at least a perpetual.

Dec-04-05  TTLump: <al wazir> 32...Qxc2 is answered by 33.h3 ... right away, and I don't see how Black gets a perpetual from this position.
Dec-04-05  The Saragossa Man: I didn't like this puzzle at all. Who wants to 'solve for draw,' especially when you don't even know you're trying to draw the game? How were we supposed to know when the puzzle is solved and the sequence stops? Just think to ourselves, "Oh, the position is drawn here; they must have agreed to a draw at this point." ? Puzzles should be 'play for mate' or 'win the queen' or something like that, something winning.
Dec-04-05
Premium Chessgames Member
  TheAlchemist: <The Saragossa Man> This way, it's more like in an actual game. There, you don't get hints that like "White to play and win" or mate or whatever.
Dec-04-05
Premium Chessgames Member
  kevin86: It looks like white has to settle for a field goal,er,I mean a draw. Black cannot escape the queen's checking.
Dec-04-05  wellwisher: After move 23 Nxf6 then after 23 Kxe7 then 24 Nd5 check looks like a winner! If kd7 then Qh4 wins! BxR followed by mate threatened. other king moves lose. then black must play QxN which gives white winning edge! not 23 Bxe8 ck which leads to draw as played in game. :)
Dec-04-05
Premium Chessgames Member
  al wazir: al wazir: <TTLump: 32...Qxc2 is answered by 33.h3 ... right away, and I don't see how Black gets a perpetual from this position.>

33. h3 Qd1+ 34. Kh2 Bxd5. If 35. Qxd5 then 35...Qxd5 36. exd5. White has two passed pawns on the K side, but after 36...Kb4 black will also queen. If 35. exd5 Qd2 I think white can stop the perpetual, but the final outcome isn't clear to me. If 35. Qd8+ Kxa4 36. Qd7+ Kb3 I like black's chances.

(And I doubt if even GMs could analyze that far ahead under time controls.)

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