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Xie Jun vs Nigel Short
Queens v Kings (2002), Jinan CHN, rd 2, Jul-21
French Defense: Tarrasch Variation. Open System Main Line (C09)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Aug-23-05  EmperorAtahualpa: Nice puzzle! Didn't see it..
Aug-23-05  ckr: Six minutes to solve, I guess I am in time trouble.
Aug-23-05  Robin01: Solved this one in about 3 minutes.
Aug-23-05
Premium Chessgames Member
  chessgames.com: <I think the week's theme is "Harder than usual puzzles". Seriously though. It's quite clear the theme is end games. Right Chessgames?> Yes, the theme is simply "endings."
Aug-23-05
Premium Chessgames Member
  pittpanther: Is the position after winning the queen trivial to win? Suppose 53 Kxg7 54 Ne6 Kg6 55 Nxf4 Kf5 and next move black plays Ke4 and then will bring his pawn to f5 and shuffle his king between e4 and d4. If white plays 56 g3 to protect the knight on f4 then if the knight ever later moves from f4 then black can play f4 to exchange the pawns off. If white does not play g3 then black can advance his pawns to try and exchange off the white one. I am certain with best play that white wins and given the strength of the players that would probably occur. However, I would be tempted to at least go a few more moves. Thoughts?
Aug-23-05
Premium Chessgames Member
  jahhaj: Yes it an easy win.

<If white plays 56 g3 to protect the knight on f4 then if the knight ever later moves from f4 then black can play f4 to exchange the pawns off.> This is the flaw in your reasoning. After White plays 56.g3 and then moves the ♘ from f4 then Black cannot play f4 himself because the response will simply be ♘xf4.

White can for instance move ♘e2 where it will attack one of the two squares you want to shuffle your king between.

Aug-23-05  alexandrovm: this one seems pretty as black is not able to protect the knight! 52. Qh8+ Kg6 53. Qxg7 Kxg7 54. Ne6+, winning the queen with a fork.
Aug-23-05  unusual: A nice puzzle took a few minutes though. Don't quite understand after;

53.Qxg7+ Kxg7
54.Ne6+ Kg6
55.Nxf4+ Kf5
56.g3 Ke4
57.Kf2 f5
58.Ke2 Kd3

as long as the BK patrols the d4-e4 squares is it not a draw? Even if the N moves away and tries to kick the K from the defence of these squares do they not give black opportunities to trade off whites last pawn?

Aug-23-05
Premium Chessgames Member
  chessdr: <jahhaj> <pinkpanther>, I think the ending should go 53 Kxg7 54 Ne6+ Kg6 55 Nxf4+ Kf5 56 g3 Ke4 57 Kf2 f5 58 Ne2 Kd3 59 Nc3! and white wins (if 59 ... Kd4 60 Ke2).

If instead 57 ... Kd4 then 58 Nh5, and if 58 ... Ke5 59 Ke3 and wins, or if 58 ... f5 59 Nf4 Ke4 60 Ne2 and continue as above.

Aug-23-05  HastyMover: I didn't get today's puzzle. I figured that the ♕h8+ move was probably a good move, but I didn't realize that after the black ♔ moves out of check that I could take the knight. I thought that the black ♙ at f6 was protecting it. I had it going the wrong way in my head. Oh well, maybe next time.

I wonder how much different chess would be if pawns could move both forwards and backwards (including captures)...

Aug-23-05  alexandrovm: <I wonder how much different chess would be if pawns could move both forwards and backwards (including captures)...> they could become a very powerful piece! There are 8 pawns for each side; in an open board they could control 4 squares instead of 2, 8 times 4= 32 controled squares! That`s more than a queen can control!
Aug-23-05  YouRang: Not too hard. It took me almost a minute, and after I found the solution I couldn't understand why it took that long. I figured that a knight fork had to come into play, and that 52. Qh8+ was the real only forcing move for white. Naturally, the next move is take the knight and set up the fork.
Aug-23-05  Kings Indian: i got this in a couple minutes while listening to rock. Blak's choices are: 53...Kxg7 54.Ne6+, or 53...Kh5, both lose a knight.
Aug-23-05  csmath: What I like about these daily puzzles is the fact how many people start loading up with the comments always with "this was easy," "not too hard," "I got it in a minute," etc. And usually mostly folks that would often overlook a mate in one OTB. :-))
Aug-23-05  sfm: Queens and knigts? We know what to look for. The hard thing was to figure out whether black resigned after first move. I won =))
Aug-23-05  alexandrovm: < "this was easy," "not too hard," "I got it in a minute," etc><csmath> Not to worry my friend, don`t you know most of them are GM`s and super GM`s? (without realizing that such a comment brings a USELESS information) :)
Aug-23-05  YouRang: <csmath> Speaking for myself, when I say "not too hard", I am referring only to the puzzle as presented -- where we are told in advance that there is a tactic to be found. This doesn't imply that it would be easy to find in a live OTB game.
Aug-23-05  sharpnova: <alexandrovm> no less useful than the comment you just made. <csmath> you know nothing about any of the kibitzers on these forums. not a thing.
Aug-23-05  snowie1: Chess is a synonym for swindle! GM's are those sutdious players that are able to avoid the swindle...most of the time. I like this puzzle (swindle), but I also like 41 Qd6 preparing for Ne5+ and it all falls apart for black; avoid the rush, resign early.
Aug-23-05  chessic eric: Anyone who claims the position is a draw needs to review endgame technique. Once white has erected the barrier to black's pawns advancing with Nf4 and g3 the black king cannot invade the blockade on the h-file and the white king simply marches around the blockade, using Ne2 as a tempo if necessary, until the black king is forced to leave one of the pawns if they remain unconnected, or the f5 pawn if connected

Also, if black tries to retain the queen with 53...,Kh5 (which he probably should try) 54.Qh7+ secures the win. Black must either interpose the queen and suffer the exchange or play 54...,Kg5??, losing to the thematic knight fork 55.Ne6+!.

Aug-23-05  alexandrovm: <sharpnova> Sorry if you didn`t felt eluded by my post :)
Aug-23-05
Premium Chessgames Member
  al wazir: <paul dorion: 37 f3 makes sense. Black was treathening Qe2, winning. White has two other options: 37 Qa7 (heading to e3) Nf5 Black is much better or 37 Qc5 Qxc5 And Black has a much better king position and should win the ending.> Thanks, that's very helpful. But I'm not as sure as you are that either alternative is worse. After 37. Qa7 Nf5 38. g3 Qe2 39. Ng2 white is constricted but loses no material. After 37. Qc5 Qxc5 38. bxc5 Kf7 39. Nc2 Ne6 40. Nb4 a5 41. Nd5 white wins. If instead 38...Ne6 39. c6 Nc7 (39...a5 40. Nd4 Nc7 41. Kg3 Kf7 42. Kg4 Ke7 43. Kf4, winning) 39. Kg3 it looks like a draw to me.

Aug-23-05  paul dorion: <Al wazir>

37 Qa7 Nf5 38 g3 Qc3 wins a3

37 Qc5 Qxc5 38 bxc5 Ne6 39 c6 Kf5
40 Nc2 Ke5 41 Nb4 Nc7 looks very good for black

Aug-23-05  notyetagm: I solved this problem fairly quickly because I know this pattern cold: <a knight defending a knight fork square means removal of the guard>. Here the White d4-knight has a forking square on e6, from where it attacks the undefended Black f4-queen. This forking square has only one defender, the Black g7-knight. So the basic tactical idea in this type of position (knight defending a knight fork square) is to capture the defensive knight (<remove the guard>). Unless the piece defending the knight defender is also a knight (<real not illusory protection>) the forking square will lose it's defender. Moreover, whichever piece recaptures and takes the place of the defending knight will be <decoyed> onto a square which will make it the second target of the upcoming knight fork.

If you knew this tactical idea cold you would quickly see the solution 52 ♕h8+ ♔g6 53 ♕xg7+! ♔xg7 54 ♘e6+ ♔f6 55 ♘xf4, regaining the sacrificed queen with a whole knight as interest.

Aug-23-05
Premium Chessgames Member
  al wazir: <paul dorion: 37 Qa7 Nf5 38 g3 Qc3> 39. Ng2 Qxa2 40. b5 a4 41. b6 wins.

<37 Qc5 Qxc5 38 bxc5 Ne6 39 c6 Kf5 40 Nc2 Ke5 41 Nb4 Nc7 looks very good for black> I agree. But is it a win? 42. Kg3 Kd5 43. Kg4 Kc3 44. Kf5 Kb3 45. Kxe5 Kxa2 46. Nd5 wins. Or 42...a4 43. Nc2 Kd5 44. Kg4 Kc4 45. Kf5 wins. (It takes black 11 moves to capture white's N and a-pawn and promote; white needs 9 moves to capture the king-side pawns and promote.)

I don't claim these are the only possible continuations. Maybe black has a win somewhere, but I think 37. Qc5 gives white better chances than 37. f3. (Remember, Qc5 was your idea. Don't fight it.)

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