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Victor Bologan vs Sergei Movsesian
XXXV Bosnia GM International (2005), Sarajevo BIH, rd 3, May-21
Slav Defense: Quiet Variation (D11)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 10 times; par: 28 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 4 ·  Later Kibitzing>
May-02-09  TheBish: Bologan vs Movsesian, 2005

White to play (17.?) "Difficult"

Material: White is down a pawn.

I often have a clue as to what the key move is by glancing at the diagram, but I didn't have a clue until I starting doing some analysis.

My line of thinking went like this: White's queen is attacked, so he must move his queen, unless there is another move that threatens mate (none exist) or a sacrifice, most likely with check, that precedes a queen move. I then noticed that 17. Qc3 threatens mate, but Black has two defenses, 17...Nf6 and 17...Bf6 (since 17...f6 is not possible due to the pin by the Bc4). After 18. Nxf6+ following either of these defenses, Black stands well after recapturing. But what if there was a way to remove one of these defenders first? That's when I found it...

17. Rxd7!

The zwischenzug! (In-between move.) Now 17...Nxc2 18. Rxc7 loses a piece, so Black must try either 17...Bxd7 or 17...Qxd7. There's not much difference, so we'll try each one.

A) 17...Bxd7 18. Qc3 Bf6 19. Nxf6+ Kh8 (or 19...gxf6 20. Qxf6 and White is mating) 20. Nd5! and White wins the queen or mates.

B) 17...Qxd7 18. Qc3 Qg4 (18...Qd4 19. Nxd4 is out of the question, and 18...Bf6 19. Nxf6+ gxf6 20. Qxf6 mates next on g7 or h8) 19. Nfg5! (I didn't see this the first time around) Bf6 20. Nxf6+ and once again, White wins the queen or king, i.e. 20...gxf6 21. Qxf6 Qxg5 22. Qh8 mate.

Dec-14-10  mastermind7994: This game is fantastic. Wow, I am really impressed by the attacking prospects of white in this game. Although I though that Black wasted a lot of moves by moving the pawns where white in all moves that he played all made sense.
Dec-14-10  mastermind7994: On 16...N5f6 how does white proceed?
Dec-16-10  mastermind7994: On 25...c3 26.Qxb4 gxh6 Qe4+ or 26...Kxh6 27.Qh4+ Kg6 Qe4+
Aug-20-20  jith1207: Well, the home page puzzle diagram says puzzle at <27.?> but the diagram shows all pieces at their original position at move Zero!

So, I went ahead and solved the puzzle with the move

<1.Qxd8#>

Aug-20-20  TheBish: And there is no move 27, Black resigns after 25. Qxc5. Hopefully we will have a puzzle to look at for Thursday.
Aug-20-20  Steve.Patzer: 1. e4 I win.
Aug-20-20
Premium Chessgames Member
  Phony Benoni: When this was used as a puzzle in2009, the position was set to White's 17th move.
Aug-20-20  jith1207: Welp, the game ends in 25 moves!

My solution is better.

Aug-20-20
Premium Chessgames Member
  al wazir: Better for black would have been 17...Nxc2 18. Rxc7 Bd8 19. Rc6 Bb7.

If now 20. Rg6, then 20...Nd4! 21. Nxd4 (21. Nf6+ Bxf6 22. Nxd4 Bxd4) Bxe4 22. Rxg7+ Kxg7 23. Ne6+ Kg8 24. Nxf8 Kxf8.

Aug-20-20  TheBish: <Phony Benoni: When this was used as a puzzle in 2009, the position was set to White's 17th move.>

I looked it up, May 1, 2009 was a Friday. So this would be a fairly tough Thursday if we take it at move 17 (I was thinking maybe 19), but it seems like lately the puzzles have been trending a little tougher than normal. So here's what it looks like (if you haven't gone through the game yet and want to try to solve a puzzle):


click for larger view

White to play (17.?) "Medium"

Aug-20-20  jith1207: <Phony Benoni: When this was used as a puzzle in2009, the position was set to White's 17th move.>

Yeah, a typo in <17> has caused it <27>, and as there's no move #27, the diagram scaled back to the starting position.

Aug-20-20  Walter Glattke: 17.Nxd7! eliminate the guarding, Qxd7 18.Qc3 Bf6 19.Nxf6+ gxf6 20.Qg5 Qh8# 18-.Qg4 19.Ng5 Qxg5 20.Nxg5 Bf6 21.Qf3 Bxg5 22.Qxa8 Be6 23.Qf3 Nxa2 Q for N and 2 pawns.
Aug-20-20
Premium Chessgames Member
  An Englishman: Good Evening: Problem with the home page. Shows the starting position of the game before White's first move and says "27.White to Play." Given that the game lasts only 25 moves, this one does seem difficult indeed!
Aug-20-20  Brenin: The published position looked familiar to me. Apparently a number of books have been devoted to it and the possible continuations. I must get hold of one of them and read it.
Aug-20-20  groog: I echo An Englishman.
Extremely difficult to find whites 27th move.
Aug-20-20  jith1207: <An Englishman - says "27.White to Play." Given that the game lasts only 25 moves, this one does seem difficult indeed!>:

True, the toughest game to win is a won end game.

Aug-20-20  AlicesKnight: As for <An Englishman>. A puzzle to be used for McCartney's "Eight days a week".
Aug-20-20  Walter Glattke: Al Wazir:17.- Nxc2 is better than the mess following here, but I have 18.Rxc7 Bd8!? 19.Rxc8 Rxc8 20.Nd6 Rc7 21.Ne5 - no mate but white wins then.
Aug-20-20  morfishine: Spoiler!
Aug-20-20  jith1207: <Al Waz & Walter>: if 17...Nxc2 18. Rxc7 Bd8,

Best move forward is

+5.45 (24 ply) 19.Rxf7 Rxf7 20.Ne5 Nd4 21.Bxf7+

Aug-20-20  TheaN: Interested to see if the starting position is available with 26 Knight moves without repeating the position three times (else 1.Nf3 Nf6 2.Ng1 Ng8 would suffice, thirteen times) I would reckon White and Black can chase each other across the board, but some squares or unavailable due to check and you will have to trace back to the starting squares on exactly move 26. I know a whole round's been done in about 15 so it should definitely be possible.
Aug-20-20  Whitehat1963: That is one seriously tough and lengthy puzzle for a Thursday! I think I might have the first move. Itís either e4, d4, c4, or Nf3. But beyond that, itís hard to figure out just one forced continuation.
Aug-20-20  smitha1: White to move and win from starting position. Present all variations. Complete and present within 24 hours. Now that's a Sunday puzzle of note!
Aug-20-20
Premium Chessgames Member
  saffuna: Damn, I've seen this position before. I'm trying to remember the winning variation.
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