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Torsten Schmehl vs Andrej Simonov
Bad Zwesten op 8th (2004), rd 4, Jan-04
Nimzo-Indian Defense: Saemisch Variation (E26)  ·  1-0



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Kibitzer's Corner
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Oct-29-14  dfcx: It's easy to find 15.Bxh7. But not so easy when black plays the best defense.

16.Ng5+ Kg6
17.Qg4 f5
18. exf6 Kxf6
19. Nxe6 Qe8
20. Qxg7+ Kxe6
21. Rfe1+

White is still only +1.5 ahead, not a easy win yet.

click for larger view

Oct-29-14  JTV: At first glance of the situation, after 14. Ndxc4, Black only has one defender on the h7 pawn. What is that knight doing on c4 when he should be defending his post against white's white squared bishop? This is a major weakness in black's camp and 15. Bxh7+ exploits this weakness. The king can't take because of Ng5+, but he does it anyway. So, after 16. Ng5+ Kg8 17. Qh5, black is in trouble of a checkmate and needs to sacrifice the queen (Qxg5)in order to prevent the onslaught. After 17. Re8, it's checkmate in 5 moves...
Premium Chessgames Member
  Fusilli: <Once> I hear you. On the other hand, Audacis Fortuna Juvat, my friend. Sometimes the reaction of the player on the other side is "oh, my God, I allowed that damn sac!" In this case, Mr. Simonov obviously couldn't keep it together.
Oct-29-14  Dezaxa: After 16...Kg6 17 Qg4 f5 18 exf6 Kxf6 19 Nxe6, if Black plays 19 Qe8 then 20 Nf4 looks stronger than Qxg7 to me. It threatens Rf1 with gain of tempo followed by Qg6 mate and Black must give up a lot of material. I still think 19...dxe6 is best for Black, with 20 Bg5 Kf7 21 Bxd8 Rcxd8 leaving Q+P vs BNN. White is clearly better, but Black's position is hardly resignable.
Oct-29-14  kyg16: Ahh the old Greco gift sacrifice. So useful in blitz chess many times.
Oct-29-14  awfulhangover: After 16.-Kg6 things are not so easy. If black plays best moves, white must do the same to win.
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop, a knight and a pawn.

Black threatens 15... Nxd2 16.Bxa6 Nxf1 17.Bxc8 Qxc8 simplifying the position.

The black castle look defenseless which invites to play 15.Bxh7+:

A) 15... Kxh7 16.Ng5+

A.1) 16... Kg6 17.Qg4 f5 (17... Qe7 18.Nxe6+ and mate in two) 18.exf6 Kxf6 (18... Nxd2 19.Ne4+ Kf7 20.Qxg7+ Ke8 21.Nd6#) 19.Nxe6

A.1.a) 19... dxe6 20.Bg5+ Kf7 21.Bxd8 Rxd8 22.Rfe1 and White has the queen and a pawn for a bishop and two knights.

A.1.b) 19... Nxd2 20.Rfe1 and White seems to have enough compensation for both pieces. For example, 20... dxe6 21.Qxe6+ Kg5 22.Re5+ Kf4 (22... Kh4 23.Qh3#) 23.g3+ Kf3 24.Re3#.

A.1.c) 19... Qe8 20.Nxf8 Qxf8 (20... Nxd2 21.Qf4+ Ke7 22.Rfe1+ Kd8 23.Rxe8+ Kxe8 24.Re1+ Kd8 25.Qxd2 + -) 21.Bg5+ Kf7 22.Qxd7+ and White has a slight material advantage and good attack prospects.

A.2) 16... Kg8 17.Qh5 Re8 18.Qxf7+ Kh8 19.Qh5+ Kg8 20.Qh7+ Kf8 21.Qh8+ Ke7 22.Qxg7#.

A.3) 16... Kh6 17.Nxe6+ wins the queen por two pieces and a pawn.

A.4) 16... Kh8 17.Qh5+ Kg8 18.Qh7#.

B) 15... Kh8 16.Ng5

B.1) 16... Nxd2 17.Qh5 Qxg5 (17... g6 18.Bxg6+ Kg7(8) 19.Qh7#) 18.Qxg5

B.1.a) 18... Kxh7 19.Qxd2 Bxf1 20.Rxf1 + - [Q vs R+N].

B.1.b) 18... Nxf1 19.Qh5 Re8 (19... g6 20.Bxg6+ Kg7(8) 21.Qh7#) 20.Bd3+ Kg8 21.Bxa6 wins material.

B.2) 16... g6 17.Qg4

B.2.a) 17... Nxd2 18.Qh4 looks similar to B.1

B.2.b) 17... Qxg5 18.Qxg5 also similar to B.1.

Oct-29-14  bunbun: Schmehl, Simonov, Hasenpfeffer incorporated
Premium Chessgames Member
  kevin86: A pseudo- epaulette mate is coming. Not only is the king blocked by his own pieces but also white's pawn prevents the king's escape behind his own pieces.
Oct-29-14  WJW147: What a crock. That's not a puzzle.
Oct-29-14  BOSTER: Black game was not very good, but at least he had plan.

He had a good plan in the opening fighting against weak c4 pawn.

What he didn't know (maybe) that the pawn is equal 3 tempo,and if in order to win the pawn you spent more than 3 tempo, this is a wrong strategy, and is too greedy.

But if black played 12...d5 with pressure on c4 and fighting for e4, he 'd had a good position, where white bishop d2 was blocked (diagram).

click for larger view

After <Once> analysis I'd say that white has not enough power to win this game,and some players would prefer to play on the black side.

I believe that 3 pieces have more power than the queen.

Oct-29-14  Dr. J: Another botched puzzle, in my view. The only way to evaluate this as "Medium/Easy" is if you never looked at Black's correct defense. (Here's a very not-Wednesdayish line that could have happened: 16...Kg6 17 Qg4 f5 18 exf6 Nxd2?! 19 Nxe6+ Kxf6 20 Nxd8 Nxf1 21 Qxd7 Rfxd8 22 Qxa7 Bd3 23 Qxb6+ Nc6 24 Rxf1 [24 Qxc5? Nxd4] Bxf1 25 Kxf1)

I have no doubt that White's attack should eventually win. But couldn't White do just as well by "saccing" Black's material instead?: 15 Qe4 g6 16 Bg5 f6 17 exf6 Rxf6 (pretty much forced) 18 Bxf6

As is no doubt obvious, I don't think much of "30-ply_computer_analysis_ shows_this_is_an_ obvious_win_for_White" -type of puzzles.

[Also, <Fusilli>, "Maybe my opponent will panic" is not the solution to a puzzle.]

Now you kids get off my lawn.

Premium Chessgames Member
  LucB: Does it count if I scroll through the game up until the critical move (move 15 in this case - without looking at the right side of the screen of course) and then guess white's move, one move at a time? Do I get half marks for this perhaps?... :)

I'm curious to know how others do it.

Oct-29-14  Chess Dad: <LucB: Do I get half marks for this perhaps?>

I do it exactly that way sometimes. On the easier puzzles (which for me is limited to Mon / Tues) I don't, but starting on Wednesday I often do.

But since nobody is keeping score, do what helps make you a better player.

Premium Chessgames Member
  Fusilli: <Dr.J> <[Also, <Fusilli>, "Maybe my opponent will panic" is not the solution to a puzzle.]>

That's a pretty unfair interpretation of my comment, which was meant to be a follow up on <Once>'s reflections on this type of sac. But if you get a kick out of correcting people for what they did not say, knock yourself out. Happy to give you an excuse to feel good.

Premium Chessgames Member
  OhioChessFan: <[Also, <Fusilli>, "Maybe my opponent will panic" is not the solution to a puzzle.] >

Tal made a career of it.

Oct-29-14  Dr. J: <Fusilli>: I did not mean to offend. My apologies.
Premium Chessgames Member
  Once: Peace, folks, peace. One of the problems of communicating by the written word only is that it's hard to show when we're jesting.

And all I can see today is folk jesting. No malice or offence intended, I'm sure.

I think Dr J and Fusilli are both right. It isn't a great puzzle but the sac is worth playing anyway from a pragmatic point of view because it gives black plenty of opportunity to go wrong.

Oct-29-14  BOSTER: < Dr.J : no doubt obvious-type of puzzles>.

According to CG Rules« substantial material »
means the winning a piece or at least the exchange. So, evaluation 2,37 dosn't fit CG Rules.

Premium Chessgames Member
  LucB: Thanks for the comment, <Chess Dad>!
Premium Chessgames Member
  Once: <BOSTER>

This is what chessgames say about the puzzles - it's taken from the "about our puzzles" text on the home page:

<The goal is to find the best move, or sequence of moves, in the given position.

You do not always have to find a checkmate! Just find the best move.

Usually, this move will lead to a superior position, either by a forced sequence of moves which leads to checkmate, or (more commonly) wins substantial material.

By "substantial material" we mean usually winning at least the exchange (i.e. trading a knight or a bishop for a rook). More commonly the winning move will net a whole piece (bishop/knight/rook) and sometimes will win the queen. Occasionally, the material will be only a single pawn--this usually happens in endgame situations where the extra pawn will surely decide the game. >

Today's POTD certainly qualifies. The question is whether the best defence for black is too tough for a Wednesday, or if there isn't a better alternative with 15. Qe4

Premium Chessgames Member
  Fusilli: <Dr J.> <Once> I was feeling a little feisty, I admit. :)
Premium Chessgames Member
  thegoodanarchist: If you have studied Vukovic's "The Art of Attach in Chess" then you are certainly familiar with this beautiful attack.

If you have NOT read it, then you are probably still already familiar with it.

If not, study it well - it is surprisingly common. You may well have your own opportunity to play it.

Premium Chessgames Member
  Bubo bubo: As everything is prepared for the classical ♗-sac, I strongly suspect 15.Bxh7+ to be the solution, but I'm unable to find a convincing follow-up to 15...Kxh7 16.Ng5+ Kg6!.

So, to my great disappointment, this Wednesday seems to be too tough for me...

Premium Chessgames Member
  Bubo bubo: After looking at the "solution" I'am even more disappointed: No Kg6, but Kg8, of course followed by that standard mating sequence after the ♗-sac on h7 (really an old chestnut!).
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