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Kore Akshayraj vs Shukhrat Safin
7th UI&UL GM (2005), Dhaka BAN, rd 7
Spanish Game: Morphy Defense. Anderssen Variation (C77)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Aug-03-12  RandomVisitor: Best play from the puzzle position is likely 42...Qxe3 43.Bxe3 Ng4+ 44.Kg1 Nxe3 45.Rb2 f2+ 46.Rxf2 Rxf2 47.Kxf2 h2 48.Qc8 h1Q 49.Kxe3


click for larger view

Black has a clear advantage <Rybka4.1>

[-0.50] d=25 49...Qe1+ 50.Kd3 Qf1+ 51.Kd2 Bg6 52.Qg4 Kg7 53.Kc2 Qc4 54.Qd7+ Kf6 55.Qg4 Qc5 56.Qf3+ Kg7 57.a6 Be7 58.Qe2 Qa3 59.Kd2 Bg5+ 60.Kc2 Qc1+ 61.Kd3 Qg1 62.Qg4 Qd4+ 63.Kc2 Qf2+ 64.Kb3 Qb6+

Aug-03-12
Premium Chessgames Member
  Castleinthesky: I give myself 1/2 credit, I saw the queen sac and pawn promotion, but not the mate. 1/2 credit for me is about right on a Friday, the other 1/2 is at the pub :)
Aug-03-12  The Last Straw: Got only up to 44…♘xe3 but still take half credit.
Aug-03-12
Premium Chessgames Member
  Jimfromprovidence: <sevenseaman>

<42...Qxe3 43. Bxe3 Ng4+ 44. Kg1 h2+ 45. Kh1 Nxe3 46.Nb1 f2 47. Nd2 Bf3+ 48. Nxf3 f1=Q+ 4<9>. Qxf1 Nxf1 <50>. Rb1 Rxf3 5<1>. Kg2 Rxg2+

and White has to submit as the K must take f1 and h1=Q+ wins.

Alternatively,

<50>. Rb3 Nxg3+ 5<1>. K~ h1=Q+ wins>

You’ve hit a blind spot with this puzzle. There is no forced pawn promotion. Here is the position after 49...Nxf1 in your line.


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White can play either 50 Rb3 or 50 Nxh2 here. You say 50 Rb3 Nxg3+, but white has 51 Kxh2.


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Black’s knight is en prise and white has a dangerous passed pawn.

Aug-03-12
Premium Chessgames Member
  kevin86: The queen sac leads to a situation where either the queen is regained (with interest) or white's king is caught in the net.
Aug-03-12  beonlychampion: cant believ my eyes ruy lopez haz changed in kings indian i


click for larger view

Aug-03-12  Prosperus: Since that is the main aim of queen's sacrifice, I think also the early f2 is possible:

42. ... Qxe3! 43. Bxe3 f2!? 44. Bxf2 (44. Nd1? f1=Q 45. Qxf1 Ng4+!; 44. Qf1 Ng4+) Bf3! and now

45. Kxh3 Rh7#

45. Kg1 h2+ 46. Kxh2 Rh7+ 47. Kg1 Rh1#

45. Qd3 Ng4+ 46. Kg1 h2+ 47. Kf1 h1=R#

Aug-03-12  sevenseaman: <Jimfromprovidence> <<sevenseaman>

<42...Qxe3 43. Bxe3 Ng4+ 44. Kg1 h2+ 45. Kh1 Nxe3 46.Nb1 f2 47. Nd2 Bf3+ 48. Nxf3 f1=Q+ 4<9>. Qxf1 Nxf1 <50>. Rb1 Rxf3 5<1>. Kg2 Rxg2+

and White has to submit as the K must take f1 and h1=Q+ wins.

Alternatively,

<50>. Rb3 Nxg3+ 5<1>. K~ h1=Q+ wins>

You’ve hit a blind spot with this puzzle. There is no forced pawn promotion. Here is the position after 49...Nxf1 in your line. White can play either 50 Rb3 or 50 Nxh2 here. You say 50 Rb3 Nxg3+, but white has 51 Kxh2.

Black’s knight is en prise and white has a dangerous passed pawn.>

Ok, it goes like this;

51 Kxh2. Nxe4 52.a6 Nc5 leads to 0-1

or

52. Ra3 Nc5 54. a6 Nxa6 55. Rxa6 Rxf3 0-1

Or you give your specific line after 51. Kxh2 and we shall see how Black can respond.

White has a passed P and Black has an extra minor piece.

Aug-03-12  stst: difficult for White to find good move/defense.
After 42.....Ng4+, 43.NxN Qd2 White finds it hard to defend the B@f2. If 44.Qg1, BxN will lock up the K.
If 44.Nh6+, Kg7; 45.NxR QxB+; 46.Kxh3 KxN; 47.Kh4 Qh2+ etc and P@f3 will advance & promote.
Aug-03-12
Premium Chessgames Member
  Jimfromprovidence: <sevenseaman> <Ok, it goes like this;

51 Kxh2. Nxe4 52.a6 Nc5 leads to 0-1>

53 a7!


click for larger view

Also, there's the Rybka analysis of <Random Visitor>.

Aug-03-12  gars: From 42) ... Qxg3 to 46) Rb1 I guessed everything all right, but 46) ... Bf4 was above and beyond my waning combinative powers.
Aug-03-12
Premium Chessgames Member
  agb2002: Black has the bishop pair for a bishop and a knight.

White threatens to push the a-pawn to promotion.

The knight on e3 seems to be the best defender of the white king and can jump to f5 if needed. The white bishop blocks the advanced f-pawn. These details suggest 42... Qxe3 to eliminate both pieces:

A) 43.Bxe3 Ng4+

A.1) 44.Kxh3 Nxe3

A.1.a) 45.Rb1 Bg4+ 46.Kh2 (46.Kh4 Be7#) 46... f2 followed by 47... Rh7#.

A.1.b) 45.Qd3 f2

A.1.b.i) 46.Rb1 Bg4+ is similar to A.1.a.

A.1.b.ii) 46.Qxe3 f1=Q+ 47.Kh4 (47.Kh2 Rf2+ 48.Qxf2 Qxf2+ 49.Kh3 -49.Kh1 Bf3#- 49... Bf3 with a mate attack) 47... Qh1+ 48.Kg5 Rg7+ 49.Kf5(6) Qf1+ wins.

A.1.c) 45.g4 Bxg4+

A.1.c.i) 46.Kg3 f2 47.Rb1 Rf3+ and mate next.

A.1.c.ii) 46.Kh2 f2 47.Rb1 Rf3 and the threat Rh3# wins.

A.1.c.iii) 46.Kh4 f2 47.Rb1 Be7+ 48.Kg3 Rf3+ 49.Kh2 Rh3#.

A.1.d) 45.Kh2 f2 46.Rb1 Bg4 and 47... Rh7+ wins.

A.2) 44.Kg1 h2+ 44.Kh1 Nxe3 followed by f2, with the double threat f1=Q and Bf3+, Kxh2, Rh7#.

A.3) 44.Kh1 Nxe3 looks similar to A.2.

B) 43.Rxf8+ Rxf8 44.Bxe3 Ng4+ followed by Nxe3 and White looks defenseless against the advance of the f-pawn.

Aug-03-12  rilkefan: <<LTJ>: I don't do anything so as to act out of negativity - even if sometimes it may come across that way. It's just a paradox which I have happily reconciled.>

Comedy gold.

Aug-03-12  LoveThatJoker: <Jimfromprovidence> and <sevenseaman> Guys, I know you are have a one-on-one here - awesome!

Just want to let you know that I already solved the 44. Kg1 h2+ 45. Kh1 dilemma.

44. Kg1 h2+ 45. Kh1 Nxe3 46. Nb1 f2 47. Nd2 Bf3+! 48. Nxf3 (48. Kxh2 49. Rh7#) 48...Rxf3 49. Rb1 f1=Q+ 50. Rxf1 Nxf1 51. Qa7 (51. Qe2 Rxg3 52. Qxf1 Rg1+ 53. Qxg1+ hxg1=Q+ 54. Kxg1 Bh6 55. Kf2 Bd2 56. a6 Ba5 ) 51...Rxg3 52. a6 Rg1+ 53. Qxg1+ hxg1=Q+ 54. Kxg1 Bh6

Note that I solved this after I posted my solution post; as I after I did so, I started to read the conversation between you two and I was intrigued on the matter.

At one point, I couldn't see how Black could win after

47...Bf3+ 48. Nxf3 Rxf3 49. Rb1 f1=Q+ 50. Rxf1 Nxf1 51. Qc8 Rxg3

Analysis Diagram - Position after 51...Rxg3


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52. Qe6+ Kg7


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53. Qd7+


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It was here after 53. Qd7+ where I could not see that Black had a winner, I consequently fired up Stockfish to see what it produced on the matter and it came to the rescue with,

53...Kh8!!


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That's how I came to find the win to the position in discussion between you two after posting my solution for the day.

LTJ

Aug-03-12  LoveThatJoker: <rilkefan> The way you express yourself to others is comedy gold.

LTJ

Aug-03-12  rilkefan: <LTJ> - I'm glad you're able to laugh at yourself, it's a sign of maturity.
Aug-03-12
Premium Chessgames Member
  profK: Does 45.g4 Cause a hiccup?
Aug-03-12  LoveThatJoker: <rilkefan> Are you able to laugh at yourself?

LTJ

Aug-03-12
Premium Chessgames Member
  Jimfromprovidence: <LTJ> <Just want to let you know that I already solved the 44. Kg1 h2+ 45. Kh1 dilemma.

44. Kg1 h2+ 45. Kh1 Nxe3 46. Nb1 f2 47. Nd2 Bf3+! 48. Nxf3 (48. Kxh2 49. Rh7#) 48...Rxf3 49. Rb1 f1=Q+ 50. Rxf1 Nxf1 51. Qa7 (51. Qe2 Rxg3 52. Qxf1 Rg1+ 53. Qxg1+ hxg1=Q+ 54. Kxg1 Bh6 55. Kf2 Bd2 56. a6 Ba5 ) 51...Rxg3 52. a6 Rg1+ 53. Qxg1+ hxg1=Q+ 54. Kxg1 Bh6>

I like the 48...Rxf3 move because that keeps the h pawn on the board after 49 Rb1 f1Q 50 Rxf1 Nxf1.


click for larger view

Black also now has a mating threat, 51...Rxg3, seeing 52...Rg1#. White has to spend a tempo moving his queen so the a pawn can advance but it's one tempo too late to be able to trade his queen for black's knight successfully.

Your line looks winning to me.

So, we need to know why <RV> says black only has a .5 advantage.

Aug-03-12  LoveThatJoker: <Jimfromprovidence> It should be noted that <RV>'s line is different to mine in that his goes 42...Qxe3 43.Bxe3 Ng4+ 44.Kg1 Nxe3.

I start with the intermezzo 44...h2+ 45. Kh1, and only then 45...Nxe3.

LTJ

Aug-03-12  sevenseaman: <Jimfromprovidence>

53. a7 Nxb3 54. a8=Q Rxf3 leaves a Q and 2 Ps against a R, B, N and 3 Ps. I do not know how the engines (RV) assess it, I think it should be a win for Black.

<LoveThatJoker> I have now had time to study your line. I find it good and thoughtful.

I work with bare hands and have no engines to assess my output. Its mainly so because I prefer to avoid that sophisticated complication.

Whenever I feel the need for engine assessment I ask some kind friend with the engine to help me out. I have made quite a few references to <Patriot> who has readily obliged.

Aug-03-12  LoveThatJoker: <sevenseaman> Your note is appreciated. Thanks for the kind compliment on the line.

LTJ

PS. If here and there you want Stockfish's evaluation on any particular line, I will gladly fire it up for you. God knows that <Patriot> and his espousal of Houdini has also been of tremendous assistance to me also in the past!

Aug-03-12  muratski: I noticed that Safin passed away in 2009.
Here's an article I found about him. RIP Safin.
http://www.chessbase.com/newsdetail...
Aug-04-12  RandomVisitor: Best play from the puzzle position is likely 42...Qxe3 43.Bxe3 Ng4+ 44.Kg1 Nxe3 45.Rb2 f2+ 46.Rxf2 Rxf2 47.Kxf2 h2 48.Qc8 h1Q 49.Kxe3 and according to deep analysis white can hold.


click for larger view

Rybka 4.1 x64:

[-0.07] d=28 49...Qa1 50.Kd3 Qf1+ 51.Kd2 Bg6 52.a6 Qg2+ 53.Kd3 Qf3+ 54.Kd2 Qf2+ 55.Ne2 Qc5 56.Ke1 Qb6 57.Kf1 Qe3 58.Qg4 Kg7 59.Qd7+ Kh6 60.Qh3+ Bh5 61.Qh2

Aug-04-12  LoveThatJoker: <RV> I'm still thinking that the line that goes 42...Qxe3 43. Bxe3 Ng4+ 44. Kg1 h2+ 45. Kh1 Nxe3 is best.

Fire up Rybka 4.1 for that, and I'm sure you'll see that it will produce a higher winning evaluation for Black there.

LTJ

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