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Konstantin Rufovich Sakaev vs Daniel Langier
Wch U18 (1992), Duisburg GER, rd 10, Jul-??
Dutch Defense: General (A80)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
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Sep-12-09  butilikefur: hey <Chessttcamps>

In your line A.3) after 68...Re7 White can mate with <69. Qf8+ Kxh7 70. Rh1+ Kg6 71. Qf6+ mate>

Sep-12-09  PinnedPiece: 62.Nxf5 was my choice, because I wanted to keep the bishop in the ensuing attack. I also brought the rook to h1, rather than a7.

So I guess I failed. These Sat & Sunday puzzles for me are very hit/miss affairs.

.

Sep-12-09  PinnedPiece: <A Karpov Fan: I knew something was going down on f5, just like when you are queuing at the bank and the guy infront is wearing a ski-mask. :-)>

!!

You're wondering why you didn't catch the weather report for snowstorm, right?

.

Sep-12-09  lost in space: I had a closer look (with the help of a silcon monster) to 62. e6. This move is rubish, maximum what white can get is 0,00
Sep-12-09
Premium Chessgames Member
  Breunor: Once,

Please don't apologize for the long post! For a player like me, what you said was very valuable! Although I often find the solutions to these puzzles, I question whether I would find them in a 'real' game where nobody stops me and says ' if you find the right move, you win.'

So determining when to go into 'puzzle mode' is very important. Your posts are very helpful and I look forward to them!

Sep-12-09  5hrsolver: I thought I had this problem. I missed the 67.Ra7 line. That line wins a lot of pawns and should win the game.

Anyway, I learned my lesson today. When it says "very difficult" treat it as such.

Sep-12-09
Premium Chessgames Member
  agb2002: Material is even. White can open the black castle with either 62.Nxf5 or 62.Bxf5. The position is complex enough as to allow an easy decision based on general considerations (keep the good bishop, keep the knight because it controls e6, a possible flight square for the black king, keep the bishop because it x-rays h7, keep the knight because it can create dangerous forks, etc.) so one should solve the dilemma by direct calculation.

In the case of 62.Nxf5 (threatening 63.Nd6):

A) 62... gxf5 63.g6 (threatens 64.Qxh7+ Kf8 65.Qf7#)

A.1) 63... Qd7 64.Bxf5 and White will obtain three pawns at least for the knight.

A.2) 63... hxg6 64.Rh1 Qd8 65.Qh7+ Kf8 66.Qxg6 + -.

B) 62... d4+ 63.Nxd4 Nd5+ 64.Kd2 Nxb4 65.Bxg6 hxg6 66.Rh1 + -.

In the case of 62.Bxf5 gxf5 (62... Qd8 63.Bxg6 hxg6 64.Rh1 + -) 63.g6

A) 63... Qd7 64.gxh7+ Kh8 (64... Kg7 65.Qf6+ Kxh7 66.Rh1+ Kg8 67.Rh8#; 64... Kf7 65.Qf6#) 65.Qf6+ Qg7 (65... Kxh7 66.Rh1+) 66.Qxg7+ Kxh7 67.Ra7 Kxh7 (67... Re7 68.Nxf5+ + -) 68.Rxc7+ Kg6 69.Nxc6 + - [2P].

B) 63... hxg6 64.Rh1 Ne6 65.Qh8+ Kf7 66.Rh7+ Ng7 67.Qxg7#.

It seems that 62.Bxf5 is much more effective.

Sep-12-09
Premium Chessgames Member
  vonKrolock: The ♗ sacrifice followed by g5-g6 is a good idea, a closer look will reveal if this was the faster way of winning the game
Sep-12-09  CHESSTTCAMPS: <butilikefur> <hey <Chessttcamps> In your line A.3) after 68...Re7 White can mate with <69. Qf8+ Kxh7 70. Rh1+ Kg6 71. Qf6+ mate>>

True, and very pretty, but 69.Nxe7 Qxe7 (else 70.Qxg7#) 70.Qxe7 N-moves (else 71.Qxg7#) 71.Rg8# works out equally well.

Sep-12-09  BEDRICH: FEN 7K/8/8/8/ k7/ PP6/8/8/
Sep-12-09  BEDRICH: wotawa 7T/8/3T4/8/8/1K6/4p1P1/1k1t white wins
Sep-12-09  remolino: "Once: <dzechiel> Excellent job, as always, of setting out the key variations!"

<dzechiel> does a nice job of setting out the key variations sometimes, not always. Often he goes into wrong lines altogether, like many of us.

What's the deal with <dzchiel> does a great job here and a great job there, bla, bla, bla. A patzter can tell a patzer, with all due respect.

Sep-12-09
Premium Chessgames Member
  dzechiel: <Once: ... Apologies - a very long post. Hope someone finds is vaguely interesting or helpful.>

No apology required! Your post was well thought out and expressed. I enjoyed it immensely.

From years of playing correspondence chess I have some humble answers for your two key questions:

<1. In an OTB game, how would I spot that a combination was "on" in this position?>

My experience is that this comes about one of two ways.

1 - you see an idea way in advance and try to steer the game in that direction. This sometimes works, but is by no means guaranteed.

2 - your opponent makes a mistake and allows the combination that was heretofore unavailable. This also happens, but not as often as you would like.

You can provoke these kinds of mistakes by playing recklessly, but, of course, you open yourself to winning moves as well. It boils down to which adage you prefer:

"Slow and steady wins the race."

or

"Nothing ventured, nothing gained."

<2. How do I get to a position like this in my games?>

Make good moves, it's that simple. :D

Sep-12-09  alphee: 62. ♗xf5 looked like the most appropriate versus ♘xf5 as threatening the queen it forced gxh5, then the next 3 moves were a logical continuation even if 63. ... ♕d7 did not come immediately to my mind. At first sight, looking at the puzzle, I expected the ♖a1 to move to h1 supporting the ♕f4 but it did not bring me anywhere.
Sep-12-09  alphee: <Once> Good posting, not too long and worth reading ... twice. I particularly liked point 1 and even printed it! Thanks.
Sep-12-09  wals: [Event "Duisburg Wch U18m"]
[Site "Duisburg Wch U18m"]
[Date "1992.??.??"]
[Round "10"]
[White "Konstantin Sakaev"]
[Black "Daniel Langier"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2625"]
[BlackElo "2395"]
[Annotator "Rybka 3 1-cpu (30m)"]
[PlyCount "133"

{A80: Dutch Defence:

........... 41. N2f3 Bc8 (41... Ng7 42. Ke1 ) 42. Rh1 (42. Ra8 Bd7 ) 42... Nc7 (42... Ng7 43. Kc1 ) 43. Qg2 (43. Rha1 Ne6 ) 43... Na6 ♗lack threatens to win material: ♘a6xb4 (43... Kh8 44. Rha1 ) 44. Rb1 Kh8 (44... Ra7 45. Bd3 ) 45. Qf2 (45. Ke2 Nc7 ) 45... Bc7 (45... Ra7 46. Ne1 ) 46. Ne1 (46. Ke1 Kg8 ) 46... Bb8 47. Neg2 (47. Nef3 Ra7 ) 47... Bc7 (47... Rf7 48. Ne1 ) 48. Bd3 (48. Ke1 Rf7) 48... Bb8 49. Kc3 (49. Bc2 Ra7) 49... Qg7 (49... Nc7 50. Kb2 ) 50. Rba1 (50. g4 fxg4 51. hxg4 Kg8) 50... Ra7 (50... Nc7 51. Kd2 ) 51. g4 fxg4 52. hxg4 Kg8 (52... Ra8 53. Nf3 ) 53. Nf3 Qd7 (53... Ree7 54. g5 ) 54. g5 This push gains space f5 (54... fxg5 55. Nxg5 Qg7) 55. Ne5 White threatens to win material: ♘e5xd7 (55. Nge1 Qe6 ) 55... Qe6 (55... Qb7 56. Ne1) 56. Nh4 (56. Qe2 Bxe5 57. dxe5 Ra8 ) 56... Bxe5 (56... Ree7 57. Nhf3) 57. dxe5 Ra8 (57... Bb7 58. Nf3 ) 58. Nf3 Bb7 59. Nd4 Qc8 (59... Qd7 60. Qg2 Rf8 61. Kb3 ) 60. Qh4 (60. Qg2 Qd7 61. Bxf5 gxf5 62. g6 ) 60... Nc7 ?? <blunder> cost ♗lack the equivalent of 4.70 pawns and further deteriorates the position (60... Qd7 would have maintained the 1 pawn disadvantage. ) 61. Rxa8 Bxa8 ( 61... Nxa8 otherwise it's curtains at once 62. Nxf5 gxf5 ) 62. Bxf5 Decoy: f5 gxf5 63. g6 Mate attack Qd7 (63... hxg6 64. Rh1 Mate attack) (63... -- 64. Qxh7+ Mate threat) 64. gxh7+ Kh8 65. Qf6+ Qg7 66. Qxg7+ Kxg7 67. Ra7 ( + 5.86 67. Ra7 Kxh7 68. Rxc7+ Kg6 69. Nxc6 Bxc6 70. Rxc6+ Kg7 71. Rf6 ) 1-0

The above may be of interest to those seeking help.

Sep-12-09  Athamas: I think my favorite move of the whole game was 56. Nh4

The bishop sacrifice is nice but setting up a knight move to dominate the game by starting with this move is very instructional.

Sep-12-09  LIFE Master AJ: Ist comment. Initially I tought that <"62 '?'"> was an error, it had to be 26 '?'

Did anyone else make this mistake?

Sep-12-09  WhiteRook48: I tried 62 Qh3 with plans of Bxf5
Sep-12-09  LIFE Master AJ: Breunor, Once.

I also found <Once's> post useful, funny and informative.

Sep-12-09  LIFE Master AJ: <Once> Too many people post pure garbage here. (No offence to anyone in particular.) You should never have to apologize for such a thoughtful and well-written post!
Sep-12-09  LIFE Master AJ: <WhiteRook48> I think almost EVERYTHING wins for White!!!!!
Sep-12-09  LIFE Master AJ: My thought processes were similar to <Atahamas> and <dzechiel> so I won't bother repeating everything that they have thoughtfully posted. (Good job, guys!)

I nailed this one, once you start sacking, the moves come pretty easily. Bxf5!, g6! and if Black captures, Rh1 looks like a mating attack.

Just so everyone knows, I am a rated OTB master. I think that solving the daily problems here is an EXCELLENT idea ... good training for your next tournament.

I can't prove it, but I think I have recently jumped several levels. (For a VERY long time, I never got the Sunday puzzles. Recently, I have had several perfect weeks.)

I won't know if this translates into a better tournament performance, its been several months since my last OTB tournament. (Although Tuesday I won an online tournament with several titled players.)

So ANYONE who is serious about improving their tactics needs to come here ... for at least 5-10 minutes a day!!!!!

Sep-13-09  TheBish: Sakaev vs D Langier, 1992

White to play (62.?) "Very Difficult"

White is down a pawn, but Black's bishop couldn't be worse, stuck in the corner behind a wall of his own pawns. In light of this, White's next move isn't too much of a surprise, since White is practically a piece up, at least in terms of an immediate attack. You could say that White is playing with a "stacked deck"!

62. Bxf5! Now White has a winning attack whether Black accepts the offering or not.

A) 62...gxf5 63. g6!

This not only threatens mate in two, but it opens all lines to the king, as well as preventing 63...Re7.

A1) 63...hxg6 64. Rh1 and White mates quickly, i.e. 64...Qd7 65. Qh8+ Kf7 66. Rh7# or 64...Kf8 65. Qf6+ Kg8 66. Rh8# or 64...Ne6 65. Qh8+ Kf7 66. Rh7+ Ng7 67. Q(or R)xg7#.

A2) 63...Qd7 64. Nxf5 hxg6 (or 65...Qxf5? 66. Qxh7+ Kf8 67. g7+, winning the queen, or 64...Ne6 65. Qf6! Ng7 66. Nh6+ Kh8 67. Nf7+ Kg8 68. gxh7+ Kxh7 69. Rh1+ Kg8 70. Rh8#, or 64...Rf8 65. Ne7+, winning the queen or mating) 65. Nh6+ Kh7 (or 65...Kf8 66. Qf6+, mating) 66. Rh1 with an overwhelming attack, i.e. 66...Qe7 67. Qxe7 Nxe7 68. Nf5+ Kg8 69. Nxe7+, or 66...Qd8 67. Qxd8 Rxd8 68. Nf7+, or 66...Ne6 67. Nf5+ Kg8 68. Qh8+ Kf7 69. Qf6+ Kg8 70. Rh8#.

B) Declining the bishop with 62...Qd8 63. Bxg6! is crushing, i.e. 63...hxg6 64. Rh1, and there is no escape from the threat of mate with 65. Qh8+ and 66. Rh7#, i.e. 63...Kf7 64. Qh7+ Kf8 65. Qh8+ Ke7 66. Rh7#, or 63...Ne6 64. Qh8+ Kf7 65. Rh7+ and mate next move.

Sep-13-09  ruzon: Well, I saw the key themes of a sac on f5 and moving the Rook to a7, but without visualizing g6, it hardly matters whether to sac the Knight or the Bishop.

Kudos to all of you who did.

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