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Dragan Kosic vs Thomas Christensen
21st European Club Cup (2005)  ·  Semi-Slav Defense: Quiet Variation (D30)  ·  1-0
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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Oct-26-05  Saruman: I laughed a bit when I realized that after 55.Bb5 cxb5 56.c6 bxc6 57.Qf7+ Qxf7 58.gxf7+ Kxf7 59.b7 black has Nd7 winning.

I got the solution, however this was just a futile attempt to find a more unusual solution.

Oct-26-05  MyCatPlaysChess: The move 55.♔h6 is the answer but the critical line is 55.♔h6 ♘h7 (threatening the white queen) 56.♕f7+ [56.gxh7 ♕xh7+ 57.♔g5 ♕h3 to protect e6 which leads to a complicated ending - white is still probably better] 56...♕xf7 57.gxf7 ♔h8 58.♗g4 ♘f8 59.♗h3 and the black pawns start to fall... easy white win!
Oct-26-05
Premium Chessgames Member
  Marius: < MyCatPlaysChess: The move 55.h6 is the answer but the critical line is 55.h6 h7 (threatening the white queen) 56.f7+ [56.gxh7 xh7+ 57.g5 h3 to protect e6 which leads to a complicated ending - white is still probably better] 56...xf7 57.gxf7 h8 58.g4 f8 59.h3 and the black pawns start to fall... easy white win!>

perhaps better is 58. Ba6!

Oct-26-05
Premium Chessgames Member
  kevin86: First,I hope everyone is patient with this website in this and the coming days-Wilma was rather vicious and knocked out a lot of power throughout the site's home state of Florida. Godspeed to the staff and managers of this and others affected by Wilma.

The puzzle was VERY easy. Black is left to stew in his own juices due to the tightly bound position.

Oct-26-05
Premium Chessgames Member
  YouRang: <Marius><Yesterday's puzzle>

White to play, move 41. ???
Anand vs Van Wely, 1997

Oct-26-05
Premium Chessgames Member
  Marius: <YouRang>
thank you but i think yesterday was tuesday (Anand van Wely was monday)
Oct-26-05
Premium Chessgames Member
  YouRang: <Marius> Oh, right. Come to think of it, as far as I could tell, CG.COM was down all day Tuesday. Perhaps there was no Tuesday puzzle.
Oct-26-05
Premium Chessgames Member
  WannaBe: I do not think there was a puzzle for Tuesday. The server was up for maybe 15 minutes in the afternoon, then it went down again...

According to the archive, the game before Anand vs Van Wely was P Markland vs Hort, 1971 which was Sunday puzzle... If my memory is correct.

Oct-26-05
Premium Chessgames Member
  Marius: Thanks <YouRang> and <WannaBe> that's all right.
Oct-26-05  Dionyseus: This puzzle was way too easy, I immediately saw Kh6 as winning, and then I calculated for a minute to see if there's any tricks black can come up with, and nope no tricks that I could see. I thought this was the strongest move, but it turns out that it isn't.

Now for Shredder 9.1's view: There's 27 possible moves in this position, and 15 are winning for white, 4 are drawn. Here are the top 3 moves:

1. 55.Bg4 is actually the strongest move! 55.Bg4 Qg7 56.Bxe6+ mate in 9 Kh8 57.Bf7 Nxg6 58.Bxg6 Qxf6 59.exf6 Kg8 60.f7+ Kg7 61.Kg5 Kf8 62.Kh6 Ke7 63.Kg7 Kd8 64.f8Q+ Kd7 65.Bf5 mate

If 55...Qe8, then 56.Kh6 Qxg6+ 57.Qxg6+ Nxg6 58.Kxg6 Kf8 59.Bxe6 Ke7 60.Bf5 Kf8 61.Kf6 Ke8 62.e6 Kd8 63.Bg6 Kc8 64.e7 Kd7 65.e8Q mate

2. 55.Kh6. Black's best defense is 55...Nh7 56.Qf7+ Qxf7 57.gxf7+ Kxf7 58.Kxh7 mate in 10 Ke7 59.Kg7 Ke8 60.Kf6 Kf8 61.Bg4 Kg8 62.Bxe6+ Kh7 63.Bf5+ Kh6 64.Bg4 Kh7 65.e6 Kg8 66.e7 Kh7 67.e8Q Kh6 68.Qg6 mate

3. 55.Ba6 is actually the third strongest move and wins almost as fast as 55.Kh6. 55.Ba6 Qg7 56.Qxg7+ Kxg7 57.Bxb7 Nxg6 58.Bxc6 Ne7 59.Bd7 Nf5 60.b7 Ng3+ 61.Kg4 Ne4 62.b8Q Nf2+ 63.Kh4 Nd3 64.Bxe6 Nf4 65.Qg8 Kh6 66.Be7 Ng2+ 67.Kg4 Ne3+ 68.Kf3 Nf5 69.Qg6 mate

If 55...bxa6 56.Kh6 Nh7 57.Qf7 Qxf7 58.gxf7+ mate in 9

Oct-26-05  AlexanderMorphy: this really was way too easy!
Oct-26-05  Dionyseus: <Saruman> <I laughed a bit when I realized that after 55.Bb5 cxb5 56.c6 bxc6 57.Qf7+ Qxf7 58.gxf7+ Kxf7 59.b7 black has Nd7 winning. >

You may be surprised to learn that 55.Bb5 wins big! 55.Bb5 Qg7 (cxb5 is weaker, i'll explain afterwards) 56.Bd3 Nd7 57.Qxe6+ Kh8 58.Qe8+ Nf8 59.Ba6 Qg8 60.Bxb7 Ne6 61.Qxg8+ Kxg8 62.Bxc6 Nd8 63.e6 Kf8 64.Kh6 Nxc6 65.g7+ Kg8 66.b7 Nb8 67.Kg7 Nc6 68.b8Q+ Nxb8 69.e7 Nd7 70.e8Q+ Nf8 71.Qxf8 mate

if 55...cxb5 then 56.c6 bxc6 57.Kh6! (not Qf7+?? which actually loses) 57...b4 58.g7 Nh7 59.Qg6 Nf8 60.gxf8Q+ Kxf8 61.Qh7 Qxh7 62.Kxh7 Ke7 63.b7 Kd7 64.b8Q b3 65.Qxb3+ Kc7 66.Kg7 Kc8 67.Qb6 c5 68.dxc5 d4 69.c6 d3 70.Qb7+ Kd8 71.Qd7 mate

Oct-26-05
Premium Chessgames Member
  YouRang: <Dionyseus> It's interesting to consider what the "strongest move" really means. Perhaps 55. Bg4 is "stronger", but I wonder if it would prompt Black to immediately resign, as did 55. Kh6.
Oct-26-05  Dionyseus: <YouRang> Bg4 in this position probably wouldn't have compelled black to resign, but who cares, it wins big anyways! I define the strongest line as the line that mates the quickest.
Oct-26-05  yataturk: I saw it pretty quickly, but I was looking for a zugzwang
Oct-26-05  DanRoss53: <Dionyseus> I saw 55. ♗g4! as well and consinder it the best move... although (as <YouRang> pointed out) it does depend on what you mean by "best".
Oct-26-05  chesscrazy: "Best" to some people may mean different things. I also immediately saw Kh6.
Oct-26-05  zb2cr: <Calculoso>, I put the bishop on f6 because I'm a stupid yazoo! Sorry.
Oct-26-05
Premium Chessgames Member
  YouRang: <To answer the Marius' question about Tuesday's puzzle> CG.COM has announced on the kibitzer's cafe that THIS is Tuesday's puzzle. Due to Wilma, they are a day behind. They may skip a day at some point to get back in sync.
Oct-26-05  lopium: Was really hard!
Oct-26-05  Halldor: This is a very instructive puzzle for the zugzwang, and an easy one for those who saw the last Monday puzzle for the same theme, but this one is better - with just one decisive winning move.
Oct-26-05  netlava: What's the difference between Bg4 and Kh6? Aren't they both "zugzwangs?"

(im a noob)

btw, I chose Bg4

Oct-26-05
Premium Chessgames Member
  YouRang: <netlava: What's the difference between Bg4 and Kh6? Aren't they both "zugzwangs?"> Yes, in a way. But Kh6 is more zugzwangish.

I hope this helps :)

Oct-26-05
Premium Chessgames Member
  Robin01: <zugzwangish> Now there is a word for you! I immediately saw Kh6.
Oct-27-05
Premium Chessgames Member
  YouRang: <Robin01: <zugzwangish> Now there is a word for you! I immediately saw Kh6.> Yeah. I bet the Germans are out to get me for that! ;-)
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