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Gavrilov vs Kevorkian
corr (1990), ?
Italian Game: Classical Variation. Giuoco Pianissimo (C53)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
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Feb-28-09  percyblakeney: I actually got this one, I think. Once you see Bg5 the rest isn't too impossible compared to the Wednesday puzzle that I wasn't even close to solving.
Feb-28-09
Premium Chessgames Member
  Willem Wallekers: I thought: Well, white could try Bg5.
Does that count as a correct solution?
Feb-28-09  laskereshevsky: Saw 28.♗g5 almost immediatly, (2 or 3 nanoseconds..)

but as <dzechiel> and many others, i thought after 28... ♙xg5 white before to take back has to play the intermediate 29.29.♕h5+ ....

satisfacted feeling ab. my speedy finding the start move of the combination, a little disapointed ab. my lack in considering how much better was 29.♙xg5....

Feb-28-09
Premium Chessgames Member
  patzer2: Here's my computer (Fritz) checked breakout:

<28. Bg5 !! hxg5>

28... Qf8 29. Qh5 Qg7 30. Bxf7! Nd7 31. Bg6+ Kg8 (31...Kh8 32. Bxh6 Qf6 33. Bg5+ Kg8 34. Qh7+ Kf8 35. Bxf6 Nxf6 36. Qf7#) 32. Bxh6 Qf6 33. Be8 Nf8 34. Bg5 Qg7 35. f6 Qh7 36. Bh6 Ne6 37. Bg6 Qd7 (37... Qh8 38. f7#) 38. f7+ Kh8 39. Bf8#

<29. hxg5 Nd7>

29... Qf8 30. Qh5+ Kg8 31. g6 Qg7 32.
Qg5! Nd7 33. Bxf7+ Kh8 (33... Kf8 34. Qd8#) 34. Qh5+ Qh6 35. Qxh6#

<30. Bxf7> 1-0

Black resigns in lieu of 30...Qf8 31. Qh5+ Kg7 32. f6+ (Fritz prefers 32. Bd5! with mate in 12 moves) 32...Nxf6 33. Qg6+! Kh8 34. Qxf6+ Qg7 35. Qxf2 (More difficult but stronger is Fritz's 35. Qd8+! Kh7 36. g6+ Kh6 37. Kg2! Be1 38. Kf3 a6 39. Kg4 ) 35... Qxg5 36. Bc4 a6 37. Qh2+ Kg7 38. Qg2 Kf6 39. Qxg5+ Kxg5 40. Kg2

or 30...Nf6+ 31. Qh3+ Kg7 32. Be6 Nh7 33. Qh6+ Kh8 34. f6 Qf8 35. Qh5 b6 36. g6 .

or 30...Qxf7 31. g6+

Feb-28-09  goodevans: <percyblakeney: I actually got this one, I think. Once you see Bg5 the rest isn't too impossible ...>

28 Bg5 is the easy bit. I think you have to have seen 28 ... hxg5 29 hxg5 Nd7 30 Bxf7! Nf6 31 Qh3+ Kg7 32 Be6! N(any) 33 f6+ Nxf6 34 Qh6# to claim full marks.

(I think this is an improvement over <patzer2>'s 32 ... Nh7 33 Qh6+)

For the record, I'm only claiming half marks today!

Feb-28-09  Ladolcevita: OHMYGOD,OHMYGOD,OHMYGOD.....
I got it!!!!!!!!Let me calm down....
Feb-28-09  ku0826: Bxf7 !! its took long reading.
Feb-28-09  outplayer: I saw 28.Bg5 even though I wasn't using a progam.
Feb-28-09  UnsoundHero: If Black were to play on, one possible conclusion would be 30 Bxf7 Kg7 31 f6+ Nxf6 32 gxf6+ Kxf6 33 Qg6 mate.
Feb-28-09
Premium Chessgames Member
  patzer2: <Saw 28.Bg5 almost immediatly, ...but as <dzechiel> and many others, i thought after 28...Pxg5 white...has to play the intermediate 29. Qh5+.

....a little disapointed ... in considering how much better was 29. Pxg5....>

Indeed, 29. hxg5! is better than the intermezzo 29. Qh5+, but only because it makes finding the win a lot easier. At first I thought the intermezzo 29. Qh5+! actually risks throwing away the win by taking away the neat double attack option in the final position (i.e. 30. Bxf7 Qxf7 31. g6+ (double attack winning the Queen).

However, it would seem that with a careful and precise attack White can still keep his win alive after 29. Qh5+ Kg8 30. hxg6 Nd7 31. f6! Nxf6 32. Qg6+! Kf8 (32...Kh8 33. gxf6 ) 33. Qh6+ Ke8 (33...Kg8 34. g6 Qf8 35. gxf7+ Qxf7 36. Qg6+ ) 34. gxf6 Qf8 35. Qh3! Kd8 36. Kg2 Bc5 37. Qh7 Ke8 38. Bd1 c6 39. b4 Bb6 40. Bg4 Kd8 41. Qg7 Qe8 42. Bh5 Qd7 43. Bxf7 . The pawn will Queen or Black will have to surrender his Queen to avoid it. Either way, White ends up with a clearly decisive advantage.

Feb-28-09  njchess: I got this one quickly if only because White has few if any good options. Also, I liked the fact that after White retakes with 29. hxg5, his pawns are linked. It wasn't until I looked at that position, did I see the hopelessness of Black's position. He really has no good 29th move. Nicely played by White.
Feb-28-09
Premium Chessgames Member
  patzer2: <goodevans> I like your line 28 Bg5 hxg5 29 hxg5 Nd7 30 Bxf7! Nf6 31 Qh3+ Kg7 32 Be6! N(any) with the improvement <33 f6+> Nxf6 34 Qh6#.

Even though White can prolong the end a few moves after 33. f6+ Qxf6 34. gxf6 Nxf6 , and the line I gave wins with much more difficulty, your improvement 33. f6+! essentially ends the game immediately.

Thanks again!

Feb-28-09  aussie: Pianist against Doctor!
Feb-28-09
Premium Chessgames Member
  Jim Bartle: A battle to the death.
Feb-28-09
Premium Chessgames Member
  RandomVisitor: After the suggested improvement 11.Nf1!


click for larger view

<[+0.50] d=15 11...Kg7> 12.Ng3 Bg6 13.Nh2 d5 14.Qf3 dxe4

[+0.97] d=15 11...Qe7 12.Ng3 Bg6 13.h4 Ng4 14.d4 exd4 15.cxd4 Nxd4 16.Nxd4

Feb-28-09
Premium Chessgames Member
  Jimfromprovidence: It looks like the position is already lost after 27 Qxg4, below.


click for larger view

Is there an improvement besides the text 27...Bxf2? 27...Qf6?! seems to lose to the same threats as the text.

Maybe the puzzle should have begun one move earlier??

Feb-28-09
Premium Chessgames Member
  johnlspouge: Saturday (Very Difficult)

Gavrilov vs Kevorkian, 1990 (28.?)

White to play and win.

Material: B for N. The Black Kh7 has 1 legal move. The White Qg4 has control of an open file; Bb3 attacks Pf7 and beyond it, g8; and Bd2 attacks Ph6. All three Black pieces are loose. The White Kh1 is open to checks on all sides, but is presently secure except for Qxh4+, which White must prevent.

Candidates (28.): Bg5

28.Bg5 (threatening 29.Qh5)

Black must accept the sacrifice or lose a P [28f6 29.Qg8#].

28hxg5 29.hxg5, threatening

(A) 30.Qh5+ 31.f6 then 31Qf8 32.Qg6+ 33.Bxf7 34.Qh5+ or else 32.Qh6 33.Qg7#

With omission of moves not meeting the threat:

(1) 29Kg7 30.f6+ forks Kg7 and Qe7

(2) 30f6 31.Qh5+ Kg7 32.Qh6#

(3) 30Nd7

[<Here, I went for 31.Qh5+ with a draw in hand, but 31.Bxf7 is a nice touch.>]

Feb-28-09
Premium Chessgames Member
  CHESSTTCAMPS: This looks more clear-cut than Wednesday's and Thursday's puzzles, where play against best defense would have produced significant advantages, but not slam dunk wins.

In this position, White's advanced pawns and active bishops measured against black's poorly placed minor pieces provide excellent conditions for an attack. Black's immediate attack on the white h-pawn suggests white's first move:

28. Bg5! Changing the weak h-pawn into an advanced g-pawn more than triples its value! Black can try declining, but with no hope. Starting from the worst first:

A. 28...f6? 29.Bxf6 Qxf6 (or Qd7) 30.Qg8#.
B. 28...Qd7? 29.Bf6 (any) 30.Qg7#
c. 28...Qf8 29.Qh5 Nd7 30.Bxf7 Qg7 31.Bg6+ Kg8 32.Bxh6 with a quick win in sight.

So, if black declines the bishop, even with best defense the weak f and h pawns will fall and white wins quickly. Let's look at acceptance:

28...hxg5 29.hxg5 and now:

D. 29...f6 30.Qh5+ and 31.Qh6#
E. 29...Kg7 30.f6+
F. 29...Kg8 30.f6 and now F.1 Qd7 31.Qh5 Qe8 (otherwise white plays Qh6 and Qg7#) 32.Qh6 Qf8 33.Qg6+ Kh8 34.Bxf7 and black can do nothing about Qh5+ followed by mate. F.2 Qe8 31.Qh5 d5 (Qf8 transposes to F.1) 32.Bxd5 Nd7 33.Qg6+ and 34.Qg7# G. 29...Nd7
(I looked at 30 g6+ but Kh6 31. g7 Nf6 seems to hold. Also 30.Qh5+ Kg8 31.Qg6+ Kf8 seems to hold) 30.Bxf7! (threatening mate in 3 starting with Qh5+) Kg7 31.f6+ Nxf6 32.gxf6+ Kxf6 33.Qg6#! G.1 30...Qxf7 31.g6+ wins
G.2 30...Nf6 31.Qh3+ Kg7 32.Bb3 with no good answer to the threat of Qh6# e.g. 32... Ng8 33.f6+ Nxf6 34.Qh6#

Time to check the game and the earlier posts to see what I've missed...

Feb-28-09  starkidaway: what about this line?

28.Bg5 hxg5
29.Qh5+ Kg7

(29...Kg8? 30.Qg6+ Kf8 (30..Kh8 31.Bxf8) 31.Qh6+ Kg8 [31...Kd8 32.f6! white winds sine queen is trapped do to32...Qd7 33.Qh8#] 32.f6 Qf8 33.Qg6+ Kh8 34.Qh5+ Kg8 35.hxg5! Nd7 36.g6 Nxf6 37.gxf7+ Kg7 38.Qg5+ Kh7 39.QxN B (moves somewhere) 40.Be6! wins for white.

30.hxg5 and white wins.

Feb-28-09
Premium Chessgames Member
  patzer2: <starkidaway> After 28. Bg5 hxg5 29. Qh5+ Kg7, you are correct that 30. hxg5 wins big. Perhaps 29...Kg8 isn't necessarily any worse for Black since both it and 29...Kg7 clearly lose to strong play by White.
Feb-28-09  ruinme: Wow, this is beautiful!! I can't believe this one. Completely missed it. Then again, I was too impatient for the answer, looked for a millisecond.
Feb-28-09  ruinme: This game should be put in a book and annotated!
Feb-28-09  WhiteRook48: I completely missed it too.
Feb-28-09  muralman: Got move no. 28 , 30 and failed to look long enough to see the pawn gumming the works.
Mar-02-09
Premium Chessgames Member
  RandomVisitor: After the proposed improvement 11.Nf1!


click for larger view

<[+0.51] d=21 11...a5> 12.a4 Bg6 13.N3h2 Kg7 14.Ng3 Qd7 15.Qf3 Ne7 16.Ng4 Nxg4 17.hxg4 Ng8 18.Nf5 Bxf5 19.gxf5 Nf6 20.Bd2 Qc6 21.Bc4 Kg8 22.Re2 (6:35.58) 1187900kN

[+0.56] d=21 11...Bg6 12.Be3 Bxe3 13.Nxe3 a5 14.h4 g4 15.Nh2 h5 16.f3 gxf3 17.Nxf3 Nb8 18.a3 Nbd7 (8:28.59) 1548540kN

[+0.61] d=20 11...Kg7 12.Ng3 Bg6 13.Nh2 a5 14.h4 gxh4 15.Nf5 (3:23.19) 591759kN

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