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Boris Valeryevich Alterman vs Marek Matlak
Olympiad (1994), Moscow RUS, rd 9, Dec-10
English Opening: Agincourt Defense. King's Knight (A13)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Given 10 times; par: 61 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Apr-24-11  WhiteRook48: dang, I had the right idea, but wrong first move, I chose 31 Rd6 immediately
Apr-24-11
Premium Chessgames Member
  Once: <Ratt Boy> <WhiteRook48> You shouldn't be so hard on yourselves. 31. Rd6 wins too.
Apr-24-11
Premium Chessgames Member
  Phony Benoni: <JimfromProvidence> That is one wicked succession of pins, counterpins, double pins, and more counterpins:


click for larger view

<34.d8Q! Bxd8 35.Rxd8 Rbg7! 36.Rxg8+ Rxg8 37.Rd8!>

Apr-24-11  Patriot: I gave myself 15 minutes for this and thought 31.Rd6 was interesting. 31...Bxd6 32.Qe6+ Kf8 33.Rxd6 Qc7 34.Bxf6 Rdxd7 and then I had some doubts and wasn't sure how to continue in this line.

Some of my time was spent looking at 31.Qg6 Rbxd7 32.Rg5 Rxd1+ 33.Kg2 hxg5 34.h6 Bf8 and the attack seems to lose steam after a few tries with 35.h7+ or 35.hxg7.

I looked at 31.g5 briefly but didn't investigate it much since my time was up.

Apr-24-11  Patriot: I missed a key line after 31.Qg6 Rbxd7?? 32.Rxd7 Rxd7 33.Qe8+ followed by 34.Rxd7. According to Houdini, 31.Qg6 also wins and ranks slightly below 31.Rd6. Actually just about everything wins according to Houdini. Black is essentially in a bind, so white doesn't have to be spectacular to win.

31.g5 is subtle, yet to the point. This is a very nice touch by Boris Alterman. It makes 31.Rd6 seem "gritty" although that wins as well.

Apr-24-11  SufferingBruin: I'm not giving mysef huge props for seeing g5 since a) it was the only part of the solution I found and b) really, what else is there on the board for white to play.

No, I post for the second time on this game to ask who in their right mind would have played g4 on the previous move? Does this move not seem risky? I think it depends on the player.

What with Alterman being a master and all, he probably thought, "Black's pieces are completely tied down, his bishop can't move so, what the hey, let's attack with g4."

My thoughts: "Black's pieces are completely tied down, his bishop can't move so I'll barbecue my tongue before I expose my king."

The guys who are great recognize their king isn't in jeopardy and will make the move. The guys who aren't (Hi!) will keep their king safe, just in case.

Apr-24-11  tacticalmonster: 1) White should put a major piece on either c8 or e8

2) There is potential bishop sacrifice on f6

3) White should get rid of the Black's DSB to lift the d8 blockade

4) There are weak light squares complex around Black's kingside

candidate: 31 Rd6

a1) 31...Bxd6 32 Qe6+ Kh7 33 Rxd6 Qc7 (33...Qb5 34 Qxe4+ Kg8 35 Qe8+) 34 Qxe4+ Kg8 35 Qe8+ Kh7 36 Rxf6!! Rxe8 (36...Qxd7 37 Rxh6+ gxh6 38 Qg6#) (36...gxf6 37 Qg6+ Kh8 38 Bxf6#) 37 dxe8=Q - White is up a piece as the rook cannot be captured without heavy material loss

a2) 31...Bxd6 32 Qe6+ Kf8 33 Rxd6 Qc7 34 Bxf6 Rxd7 35 Rc6 Qb8 36 Be7+ Rxe7 (36...Ke8 37 Bd6+ Re7 (37...Kd8?? 38 Qg8#) 38 Rc8+ Qxc8 39 Qxc8+ Kf7 40 Bxe7 ) 37 Rc8+ Qxc8 38 Qxc8+ Kf7

b) 31...Qc7 32 Qe6+ Kf8 33 Rc6 Qb8 34 g5! hxg5 (34...fxg5 35 Bxg7+ Kxg7 36 Qxe7+ ) 35 h6 gxh6 36 Bxf6!

candidate: 31 g5!

a) 31...fxg5 32 Rd6! Bxd6 33 Qe6+ Kf8 34 Rxd6 Qc7 35 Bxg7+! Kxg7 36 Qe7+ Kg8 37 Rg6+ Kh8 38 Qg7#

b) 31...hxg5 32 Rd6 Bxd6 33 Qe6+ Kf8 34 Rxd6 Qc7 35 h6! Rxd7 36 h7 and win

Time spent: 42 min

Apr-24-11
Premium Chessgames Member
  Once: <SufferingBruin> The riddle of the sphinx was this - what animal walks on four legs in the morning, two legs in the middle of the day and three legs in the evening?

The answer, of course, is man. As a baby he crawls on hands and knees. Full grown he walks on two legs. As an old man he walks with a stick.

We could have an alternative version of this. What animal is a lamb in the morning, a fox in the middle of the day and a lion in the evening?

To which the answer would be a chess king. In the opening, he cowers behind his own pawns and pieces - much too afraid to get involved in the battle. In the middle game he needs to be cunning. If the coast is clear he might send his bodyguards into the fight - the Nf3 and the f, g and h pawns. But the King himself usually still stays at home.

It is only in the endgame that a king becomes a lion. With most of the pieces off the board he strides forwards from the back rank to go hunting pawn.

Knowing when to switch from lamb to fox to lion? That usually comes with painful experience and nearly always after you have been too fast or too slow to make the transitions...

Apr-24-11  Yodaman: This would be very insane for me in an actual game and there's no way I would make these moves, but because this was a puzzle I managed to figure out the first three moves of the game continuation in about a minute... pure luck, usually I fail miserably at the extra difficult puzzles here.
Apr-24-11  ZUGZWANG67: Material is even but W is on the attack. He has great rooks behind the dangerous passed pawn on the 7th. The b7-rook, e7-bishop and e4-pawn are all unprotected.

My candidates are 31.Qxe4, 31.Qe6+, 31.Qg6, 31.Bxf6 and 31.Rd6.

31.Qxe4 looks good until one realizes that 31...Rbxe7 removes White's major trump.

Once I started studying 31.Rd6 I stopped considering anything else. This opens the gate to Qe6+, gaining the BB. Then 31...Bxd6 32.Qe6+ Kh7 (Black is better keep the K out of the 8th rank, as the risk of a nasty check at e8 is emerging) 33.Rxd6 Qb5 (Black should do his best to keep e8 under control, I think) 34.Qxe4+ Kg8 (34...g6 35.Qxg6+ Kh8 36Bxf6 mate) 35.a4!! and I can't see how B can prevent (36)Qe8+...

Oh no no no! There's 32...Kf8! This too covers e8!

So 31.Rd6 Bxd6 32.Qe6+ Kf8. Now this is less obvious. 33.Rxd6 and now does the BQ have to stay on the diagonal? Probably not, as 33...Qb5 34.a4 and the BQ is out of play. So 33...Qc7, to keep pressuring the pawn. 34.Bxf6 gxf6 35. Qxf6+ Kg8 36.Qg6+ Kf8 37.Rf5+ Ke7 38.Rf7 is mate! There must be something better for Black somewhere. Let's investigate after 34.Bxf6. Does Black really have to take the WB? Say 34...Rxd7. 35.Qe8+. It does not work. (??)

------------

Just after 35.Qe8+ I went for the solution. I'm shocked that the move found by Alterman actually constitutes no less than the gap in my work!

Apr-24-11  ZUGZWANG67: I can't remember who wrote that but this problem reminds me something I read somewhere:

ĞOften in a (wrong) calculation the move you miss is the first moveğ.

Apr-24-11
Premium Chessgames Member
  Once: <ZUGZWANG67> After 34...Rxd7, try 35 Rc6


click for larger view

Now if 35...Qb8, white has 36. Be5 threatening 37. Bd6+ Rxd6 38. Rc8+

Apr-24-11  willrazen: Instead of 31. g5 I thought directly of
31. Rd6 Bxd6 32. Qe6+ Kh7(or h8 or f8) 33. Rxd6 Qc7 34. Bxf6 gxf6 Is there a problem with that?
Apr-24-11  willrazen: Houdini says the best play for black if 31. Rd6 is 33... Qxd6, so I guess that's okay too, since white wins the queen
Apr-24-11  wals: Rybka 4 x 64

The game was equal 24.h5, 0.49.

Black blunder
d 18 : 4 min :
27...Kf7, +3.66. Best,

1. (0.49): 27...c4 28.bxc4 Qxc4 29.R1d2 Qa4 30.Qe6 Rc6 31.Qf5 Rc2 32.Rxc2 Qxc2 33.Be5 Qc1+ 34.Kh2[] Qc6 35.Bf4 b5 36.Rd4 Kf7 37.Kg3 b4 38.Kg4 a5 39.f3 exf3 40.gxf3 a4 41.Qg6+ Kf8 42.Qe4 Qb5

White blunder
d 15 : 4 min :
28.Qg6, +2.09. Best,

1. (3.75): 28.Bxf6 Bxf6 29.Rd6[] Rcxd7 30.Rxd7+ Rxd7 31.Qxd7+ Qxd7 32.Rxd7+ Ke6 33.Ra7 b5 34.Rxa6+ Kd5 35.Rb6 b4 36.Rb7 Kc6 37.Ra7 Kd5 38.Kf1 Kd6 39.Ra6+ Kd5 40.Ke2 Bb2 41.Ra7 Kd6 42.f4 Bf6 43.a4

30...Rb7, +3.80, ensured Black's
demise.

1. (#3): 35...Kxg7 36.Qxh6+ Kf7 37.Qh7+ Kf8 38.Rf6#

Apr-24-11
Premium Chessgames Member
  gofer: I would guess something like...

<31 Rd6 Bxd6>
<32 Qe6+ Kf8>
<33 Rxd6 Qc7>
<34 Bxf6 Rxd7>
<35 Rc6! Qb8>
<36 Bxg7+ ...>


click for larger view

36 ... Rxg6 37 Rc8+ Qxc8 38 Qxc8+ Ke7/Kd7 39 Qxb7 winning

At this point things get interesting...

<36 ... Kxg7>
<37 Qxh6+ ...>

37 ... Kg8 38 Rg6+ Kf7 39 Rg7+ Kd8 40 Qh8#

<37 ... Kf7>
<38 Rf6+ Ke7>
<39 Qg7+ Kd8>
<40 Rf8+ Kc7>
<41 Qe5+ Rd6>


click for larger view

Anything more is very very unlikely to be correct so I'll stop here.Time to check...

Apr-24-11  Dr. J: <Once: <ZUGZWANG67> After 34...Rxd7, try 35 Rc6


click for larger view

Now if 35...Qb8, white has 36. Be5 threatening 37. Bd6+ Rxd6 38. Rc8+>

Black can play 35...Qxc6 36 Qxc6 gxf6, and while White's position is quite pleasant, it is no where near as decisive as the game continuation.

No points for me today - g5 never occurred to me.

Apr-24-11  stst: insane Easter Sunday.. lots of variations, try one (clue is to break thru the wall, and only by sac): 31.Rd6 Bxd6
32.Bxf6 gxf6
33.g5 (Q&P a good attacking couple) hxg5
34.Qg6+ Kh8 (could also go Kf8)
35.Qf6+ Kh7 (W Q has to be alert of tricked by Bk Bxh2, losing Q) 36.Qg6+ Kh8
37.Rxd6 R(d)xd7
38.Rxc6 Rg7
39.Qe8+ Kh7
40.h6 (power of P, thanks to g5 at 33.) Re7
41.Qg6+ Kh8
42.Rc8#
now back to NBA...
Apr-24-11  BOSTER: This position after 22.Qg4.


click for larger view

In this position, where all black pieces have no any mobility, black should try to activate his white bishop by getting it outside the "chain", how said J.Silman-"important rule to keep in mind". After playing 22...Bb5 23.Rd1 Bd3 24.f3 c4
see next position,black pieces will get some space to play.


click for larger view

Apr-24-11
Premium Chessgames Member
  DarthStapler: I got some of the general ideas
Apr-24-11  sevenseaman: The most perceptive comment on this puzzle is < Shatranj Ka Khiladi: If I were good enough to play 30. g4, I would have gotten 31. g5! Alas...>

30. g4!

Its a very good move, and seeing the context of the game, a safe one. It even looks the obvious move ..er now.

<But I have to wonder how many of us would have made it.>

The answer lies with people who can honestly search their hearts and have the courage of conviction.

I think, if I happened to deem it at all, I'd have classed it a desperado move and chickened out.

Apr-24-11  M.Hassan: "Insane" White to play 31.?
Equal in forces.
I studied two lines: one starting with A)31.Qg6 and the otther B)31.Rd6

Line A):
31.Qg6 Rbxd7
32.Rxd7 Rxd7
33.Qe8+ Kh7
34.Qxd7 Qa8
35.Qxf7
And I wrote that it is the time for Black to resign!.Later, I realized that if Black does not capture the d pawn, White can not do anything:

31.Qg6 Bf8
32.Bxf6 Qxf6
33.Qe8 Rbxd7
34.Qxd7 Rxd7
35.Rxd7
And not much is achieved and White Queen is lost and White is behind after exchange. I then diverted attention to
Line B):
31.Rd6 Bxd6
32.Qe6+ Kh7
33.Rxd6 Qc7
34.Qf5+ Kh8
35.Qe6 Rxd7
36.Qe8+ Kh7
37.Qg6+ Kg8
1/2 1/2
Time to check

Apr-25-11  dufferps: Just taking it from 31.g5 fxg5,
32. Rd6 Bxd6, 33. Qe6+ Kf8, 34. Rxd6...

I think at that point Black would have done better to play 34. ... Qxd7. Then I think a likely continuation might be
35. Bxg7+ Kxg7
36. Qg6+ Kf8
37. Qxh6+ Ke8
38. Qh8+ Ke7
39. Qf6+ Ke8
and from this point I think it is a draw (unless white manages trade his rood for the black queen and promote his h-pawn).

Apr-25-11
Premium Chessgames Member
  Once: <Dr. J> Yes, but then the black pawns fall with surprising speed. Here's the position after black has played 36...gxf6


click for larger view

White sweeps up f6 (with check). Then h6 and e4 are not long for this world either. Lots of connected passed white pawns and an easy endgame win.

Oct-20-18  Saniyat24: Rook+Queen+Bishop= Control+Alter+Delete...!
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