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Diego Valerga vs Carolina Lujan
79th Argentine Championship (2004), Buenos Aires, rd 4, Sep-26
Sicilian Defense: Kan. Modern Variation (B42)  ·  1-0



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sac: 34.Qh8+ PGN: download | view | print Help: general | java-troubleshooting

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Jan-09-06  JustAFish: <I went to a training session with D & it was all about strategy - where r his tactics? Do u study them online or in a book?>

Sorry, I got confused. It was George Renko's intensive tactics training course- not Dvoretsky's. I actually like CT-ART 3.0 a bit better, however.

Jan-09-06  khammer: I currently use CT-ART 3.0, but that is starting to get too easy. Does anyone have any suggestions as to good follow up tactics software that would be slightly more advanced, and also some good endgame tactics software for the advanced player (1900-2700)? I love CT-ART's format, but most of the problems aren't challenging enough anymore.
Jan-09-06  JustAFish: <khammer> Try Renko's software, it's harder.

Jan-09-06  yoshi927: <patzer2>: Believe me, I tried everything I could think of on the third puzzle. And I'll get right to work on the second puzzle. Can't believe I didn't see Kf1.
Jan-09-06  mr j: another happy monday for me :)
Premium Chessgames Member
  patzer2: <The17thPawn> Excellent effort! Thanks for trying the puzzles.

For puzzle 2, the move 36...Qe1 allows White to equazlize after 37. Qh8+! Kg6 38. Ne5+ Kf6 39. g5+! = (0.00 @ 18 depth per Fritz 8). Although not objectively the strongest move, probably the easiest practical solution here is 37...Qd5+ 38. King moves Qxf7 winning the loose Knight for a decisive advantage.

For puzzle 3, your move 36...Nf4+! 37. Kg3 Nd3! 38. Qh8+ Kg6 39. Ne5+ Nxe5 (-2.59 @ 15 depth) wins neatly. Also, it appears easier to find over the board compared to Fritz 8's solution. This is the kind of simple but clear solution Masters look for in practical OTB combinations.

Jan-09-06  Mendrys: I saw 34. Nxf7 threatening Queen and mate on h8 but wait, it's not Qh8++, but just check. Black has 34...Qd2+ to save his queen in any case. Qh8+ is much stronger. Regarding the posts about beginners studying openings. I agree that it would be a waste of time to spend hours doing in depth study of opening lines. However, there is nothing wrong spending a little time to study general opening theory. Find out the general ideas behind the Giuoco Piano, Ruy Lopez and such. Discover why moving a piece twice in the opening can be bad and when there are exceptions! Example: After 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 the following position is reached.

click for larger view

Here, it is tempting as white to take the d pawn as it's only protector is pinned. This would be bad because after 6. Nxd5? Nxd5! 7. Bxd8 Bb4+ white has to give his queen back and is now down a knight! Both sides moved their knight twice in the opening but black's was an exception to the rule as white commited the tactical blunder. Does anyone have a good beginner's book on openings that they would recommend? I remember learning chess in the early 90's and seemed to remember a good simple opening book by Fine but lost it. To sum it up when you are not playing (the best way to get better is always to play lots of games.) you should study 1. tactics, 2. tactics, 3. More tactics and 4. A little time on opening theory.

Jan-09-06  The17thPawn: <Patzer 2> - In the second puzzle do you mean 36...Qf4+? D5 is guarded by a white pawn and the puzzle starts on blacks 36th move. Also did you have time to look at Flear vs.Nunn 1987 as Iwould like to see if I was on track there as well? Appreciate any comments and thanks for the feedback.
Jan-09-06  yoshi927: <patzer2> Man I'm totally stumped here... I'm going to come back to that position tommorow
Premium Chessgames Member
  patzer2: Since <The17thPawn> and <yoshi927> have combined to help find excellent practical solutions to my three puzzles, I'll go ahead and share the Fritz 8 solutions:

1. After 34. Nxf7?? Qd2+ 35. Kg3 Ne2+ 36. Kh4 (diagram below),

click for larger view

Black mates in two moves with either (a) 36...Qe1+ 37. Kh6 g6# (37... Nf4#) or (b) 36...g5+ 37. Nxg5 (37. Kh5 Ng3# or 37. Kh5 Nf4#) 37...Qxg5#.

2. After 34. Nxf7?? Qd2+ 35. Kg3 Ne2+ 36. Kh2 (diagram below),

click for larger view

Black puts White into a mating web after Fritz 8's neat waiting move 36...Qd4! 37. Qh8+ Kg6 38. Ne5+ Qxg5 .

Also winning here are the simple 36...Qf4+! 37. Kg2 Qxf7 or the more complex 36... Nc1+! 37. Kg3 Qe1+ 38. Kh2 (38. Kf4 Nd3#) 38... Qf2+ 39. Kh1 Qxf3+ 40. Kh2 (40. Kg1 Ne2+ 41. Kh2 Qg3+ 42. Kh1 Qg1#) 40... Qf2+ 41. Kh1 Qf1+ 42. Kh2 Qf4+ 43. Kh1 (43. Kg2 Nd3 ) 43... Ne2 44. Qc5 Qf3+ 45. Kh2 Qg3+ 46. Kh1 Qxh3#

3. After 34. Nxf7?? Qd2+ 35. Kg3 Ne2+ 36. Kf2 (diagram below),

click for larger view

White wins with the Fritz 8 solution 36... Nc1+ 37. Kg3 Qe1+ 38. Kg2 (38. Kf4 Nd3#) 38... Nd3 39. Qh8+ Kg6 40. Ne5+ (40. f4 Nxf4+ 41. Kf3 Nd3 42. Kg2 Qf2+ 43. Kh1 Qxf7 ) 40... Nxe5 .

However, as a practical OTB solution, I like the <The17thPawn>'s winning line 36... Nf4+! 37. Kg3 Nd3 38. Qh8+ Kg6 39. Ne5+ Nxe5 .

Premium Chessgames Member
  patzer2: <The17thPawn> All three of the puzzles started on Black's 36th move. I understand the confusion though. I meant for puzzle 2 that 36...Qf4+! (not 37...Qf4+ as I previously misnumbered the move) 37. Kg2 Qxf7 with a winning double attack was a good winning alternative. I will look at the Flear vs. Nunn 1987 game again and post a comment later.
Jan-09-06  America: goood game
Jan-09-06  misguidedaggression: I've found that once you're good enough with tactics and stratigy, you don't need to study openings at all. If you know the general ideas behind an opening and you're wary of traps, you'll follow book lines without even knowing it. (Yes, you'll use up a little more time on the clock than someone who memorized the opening, but when your opponent goes out of book you'll be able to figure out how to punish him, and when you go out of book, you won't lose immediately to some stupid opening trap.) There are recuring themes in openings, memorizing the themes is a lot more important than memorizing the moves. These themes are all based on tactics and stratigy. You want to study openings as a beginner? Study this:

1.Open with a central pawn; KP or QP, preferably the former.

2. Develop your pieces in order of value: knights first, then bishops, then rooks, queens last!

3.Avoid moving pieces twice until you have completed your development.

4.Castle early!

5.Try to develop with threats.

6.Be wary of your opponent's threats. Try to develop while parrying these threats.

7.Material is of the least importance during the opening. Development and initiative are most important!

8.The best way to refute a gambit is to either not accept it, or give the material back!

9.Develop towards the center. The center is the most important part of the board. Control it and you control the game!

If I forgot anything, let me know.

Jan-09-06  alexandrovm: number 4 depends on the position, that is my opinion
Jan-09-06  HillGentleman: I prefer 36....a4.
Jan-09-06  HillGentleman: Then the black knight goes to c5, and the black king goes to the middle of the board. - It would hold longer.
Premium Chessgames Member
  patzer2: <misguidedaggression> <I've found that once you're good enough with tactics and stratigy, you don't need to study openings at all.> Well I'm not a big fan of too much study of the openings (especially to the exclusion of adequate study of strategy, tactics and endgame technique). However, I wouldn't go that far, and I suspect you may have deliberately overstated the case to make a point.

My personal recommendation for learning endgame technique, tactics and strategy is to combine the study of those facets of the game with Opening Gambit play. In particular for players below expert level, the King's Gambit, the Mora gambit in the Sicilian, the Cochrane gambit in the Petroff and the Blackmar-Deimer gambits as White and the Benko gambit and Marshall attack in the Ruy Lopez as Black are excellent choices for play rich in combinational possibilities.

For new players or those with very limited time for opening study I suggest learning a few simple equalizing (i.e. drawish) lines in mainline openings, and then to focus on developing their middle game and end game technique to secure the advantage. For example, the Queen's gambit as White and the QGD slav and Caro-Kann as Black could be the basis of a limited opening repertoire.

Jan-10-06  Father Karras: <misguidedagrresive> <patzer2> I think both your ideas have already helped my chess improve vastly.
Jan-10-06  misguidedaggression: <alexandrovm> I think they all depend on the position. (Sometimes castling kingside in the French is just suicidal!) But for the most part, beginners are less likely to get run over early if they're castled.

<patzer2> True, but still, the worst thing you can possably do is pick up an ECO and start memorizing! When I want to play a new opening, the first thing i do is find the traps, stratigys, pawn formations and piece deployments in the opening. Once you know where everything goes and why, the lines tend to work themselves out naturally. I equate memorizing lines to playing computer assisted... except with your opponent having the ability to unplug you with a novelty! If you are going to have to think for yourself anyway, why not start on the first move. :)

<Father Karras> Thanks, I know LIFE Masters that have never gotten that kind of compliment!

Jan-10-06  Stonewaller2: <eaglewing, HillGentleman> CM8K agrees with you both that 36. ... a4!? gives Black fighting chances. I hadn't tried ♔g2-f1-e2 against that to chase the ♘ to c5 but will tonite and let you all know how it comes out (full disclosure: when I do stuff like that I give myself like 20 mins. to the machine's 10) . . .
Jan-10-06  alexandrovm: <misguidedaggression: <alexandrovm> I think they all depend on the position. ...> thanks for your explanation. Anyway, I think your "guide" to a "gg" is very good if and only if we consider it as it is, a guide. I have a friend that follows most of your "guide" and this hurts his games because he can't excplore out of it. Sometimes is hard to make a decition that comes right from your heart.
Jan-11-06  misguidedaggression: Actually, It's just regurgitated from a handout a chess techer friend gives his students. It's for beginners so they don't waste too much time studying openings when they should be studying tactics. Openings come later. Learn to crawl before you can walk.
Jan-14-06  DeepBlade: I dont have much problems with chess, but what really bothers me, I cant transpose between opening to middle-game. Determing the game's character, giving the game character or leading/steering the game, is really hard for me. Open games are really fun, the moves are a little bit move obvious sometime, but when it comes to closed games I simply get locked up. As <misguidedaggression>'s guide says, its all about the theme.
Jan-18-06  Stonewaller2: <DeepBlade> Check out GM Euwe's "Judgement and Planning in Chess," that's the modern standard work on that phase of the game.
Feb-04-06  DeepBlade: <Stonewaller2> Thank you verry much!

Im gonna buy a lot of chess books so I can read them in the summer holiday, I hope. Going to the beach of pool, hanging around with friends and stuff, and when it is a it quiet and cold, like 11 o clock, I play chess with people who live near me. I plan on writing the moves down, so I can share the games with the kibitzers on

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