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Lian-Ann Tan vs Henrique Mecking
"Checking Mecking" (game of the day Aug-29-2014)
Manila Interzonal (1976), Manila PHI, rd 7, Jun-22
Sicilian Defense: Dragon Variation. Yugoslav Attack (B77)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Aug-29-14
Premium Chessgames Member
  perfidious: As noted above, despite the difference in class, the first meeting between these players was hardly a walkover. Matter of fact, at Petropolis, a former world champion got all he could handle before Tan went down to defeat in L A Tan vs Smyslov, 1973.
Oct-27-15  JohnBoy: Pretty clearly 38...f5
Oct-27-15
Premium Chessgames Member
  Penguincw: Ooh, a deflection move for a Tuesday puzzle! 38...f5+ 39.gxf5 gxf5+, and white is screwed. 40.Kd3 leads to 40...Qxb3+ 41.Qc3 and mate.

2/2 this week.

Looks like this puzzle was POTD before: on Mon/Sep/06/2010. <cg> will use re-runs, but they're usually far apart. I've been on this site for almost 5 years, which actually seems to be a pretty long period of time. However, this puzzle was released a few months before my creation.

Oct-27-15  tjshann: f5 wins the Queen, or results in mate if Kd3. It was all explained in the 2010 comments
Oct-27-15  varishnakov: 38...P-B4+ and it's all she wrote.
Oct-27-15  lost in space: 38...f5+ and no defense
Oct-27-15  diagonalley: ...well, if one does (before the end game) decide to park one's king in the middle of the damn board, then one jolly well deserves to get what's coming to one!
Oct-27-15  stst: Let the light pieces do the job:
38..............f5+
39.gxf5 gxf5+
40.KxP or Kf4 QxQ, no compensation at all for Black or if
40.Kd3 Rd2#
Oct-27-15  stst: <move. I was certain - almost instantly - that Qa8+ had to be the right move, but here I looked for a long while before I noticed the real problem with White's position.

- so strange ... ... ...>

Strange is in the comments...

As a problem, the obvious is almost always a blind... so let go the heavy-weights, enter the light-weight: i.e., the pawns, and they got the job done.

On 40.Kd3, sure Qd2 will also kill, but Rd2 got the beauty of taking the Q - but actually not, since the K has no further escape.

Oct-27-15
Premium Chessgames Member
  agb2002: Black has two extra pawns.

White threatens 39.Qxb4.

The white king protects the queen. Therefore, 38... f5+:

A) 39.gxf5 gxf5+

A.1) 40.Kd3 Q(R)d2#.

A.2) 40.Kxf5 Qxd4 - + [Q+P].

A.3) 40.Kf4 Qxd4+ wins also the rook.

B) 39.Kd3 Q(R)d2#.

C) 39.Kf4 Qxd4+ as in A.3.

Oct-27-15  morfishine: <38...f5+> and White is lost
Oct-27-15  stacase: Easier than yesterday.
Oct-27-15
Premium Chessgames Member
  whiteshark: <38...f5+> and that's it.
Oct-27-15  saturn2: After f5 white is left with the choice of loosing the Queen or get mated within at most two moves.
Oct-27-15  patzer2: This was a Monday puzzle on Sep 6, 2010, but it still makes for an easy Tuesday solution today with the deflection (i.e. removing the guard) 38...f5+.

For a White improvement, <RV> posted a Rybka 3 analysis in 2010 indicating 19. a3 = would have held it level, and Deep Fritz 14 in 2015 confirms that assessment.

For an earlier idea for White, instead of 9. Bc4 I slightly prefer the Fritz suggestion 9. 0-0-0 as in Topalov vs Lu Shanglei, 2015.

In looking at more recent games, seems to me the Sicilian, Dragon, Yugoslav Attack (B77), as employed here, is no longer so strong and fearsome a weapon as it one was against the Sicilian Dragaon.

In the Yugoslav attack's hey day, strong GMs often used it to crush opponents daring to employ the dragon against them. A case in point is Fischer vs Larsen, 1958.

However, today, with deep computer analysis enhancing opening preparation, it appears to me well prepared dragon players can hold their own against the once feared Yugoslav attack.

The current world champion certainly didn't fear deploying the Sicilian Dragon to frustrate a strong opponent's Yugoslav attack in Radjabov vs Carlsen, 2008.

Oct-27-15  CHESSTTCAMPS: Black is up two pawns and would likely win a rook and pawn ending after a queen exchange. However, the exposed position of the royal couple allows an easier finish by black:

38... f5+ 39.gf fg+ 40.Kd3 (Kxf5 Qxd4) Rd2#

Oct-27-15  starry2013: I couldn't see anything with rook and queen, but then I noticed the f pawn. Attack the king with the pawn (forcing check), it gets forced away then I take the queen. That's the best I can see after a quick look. Would be good enough to win of course.
Oct-27-15
Premium Chessgames Member
  Oxspawn: I found f5 (Oh, well done me!) but black is two pawns up and swapping queens would eventually win, would it not? The move played is a stiletto thrust - but it seems like the options were a hard pawn or a soft pawn ending. (And that's me done for the day.)
Oct-27-15  Chess Dad: I also think this one was about as easy, or even easier than yesterday's puzzle.

But a nice pawn deflection isn't something that I would have seen instantly a year and a half ago, when I joined.

Oct-27-15  dfcx: White's queen is only protected by the king. Deflecting the king gets the queen.

38...f5+ 39.gxf5 hxf5+ 40 Kxf5 (Kd3? Qd2#) Qxd4

Oct-27-15
Premium Chessgames Member
  gawain: White did not foolishly "decide to park" his king in the middle of the board. He got chased to the middle by a great sequence starting with 32...Qg2+. It all looks forced from there.

(Oh, W could try 34 Kd3 but this loses the queen after 34...Qc2+ 35 Kd4 Qb2+)

Oct-27-15
Premium Chessgames Member
  kevin86: White will soon be given a choice: abandon the queen to go after a lowly pawn or move the king where it will be mated.
Oct-27-15  Cheapo by the Dozen: A very simple diversion -- in two senses of the word.
Oct-27-15
Premium Chessgames Member
  thegoodanarchist: It occurred to me that "LA Tan" is a good pun by itself.
Oct-27-15
Premium Chessgames Member
  Bubo bubo: The white king has to protect his queen, but after 38...f5+ 39.gxf5 gxf5+ he must abandon her (40.Kxf5 Qxd4) in order to avoid immediate checkmate (40.Kd3 Qd2#).
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