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|Apr-09-11|| ||patzer2: For today's Saturday puzzle solution, Karpov's 29. Bxe7+!! treats us to a rare double pin on the enemy King, or to be technically accurate a double "absolute" pin.|
Here's a move-by-move look with Fritz:
<29. Bxe7+!! Rxf7 > Makes a sham sacrifice of the Bishop to set the first pin by the Queen of the Rook on f7.
If 29...Kh8, then 30. Qe6! (better than 30. Bxg6 ) is the strongest winning move. From here play might continue 30...Bxe4 31. Rxe4 Nf6 (diagram below)
click for larger view
32. Ne5! Nxe4 33. Nxg6+ Kh7 34. Nxf8+ Rxf8 35. Qg6+ Kh8 36. Rxe4 Qa8 37. Ba2 Qb7 38. Re7 .
<30. Ng5! hxg5 31. Nxg5> Offers up a second piece as part of the sham sacrifice just to pile on and attack the pinned piece a second time. Clearly Karpov had calculated this combination to a winning advantage, as two pieces would have been too much for a solid player like him to offer up for an unclear speculative attack.
<31...Rdf8> is forced to defend the twice attacked pinned Rook.
If 31... Ne5, then White wins after 32. Rxe5! (not 32. Nxf7?? c4! 33. Qb5 Qb7! 34. Re4 Nf3+ ), when play might continue 32... Rdf8
33. Nxf7 Bxe5 34. Nxe5+ Kg7 (diagram below)
click for larger view
35. Nxg6! Kxg6 36. Qe6+ Rf6 37. Qg4+ Kh6 38. Re5 Qe8 39. Rxe8 Be4 40. Rh8+ Bh7 41. Qh4+ Kg6 42. Qxh7+ Kg5 43. Qh5#.
<32 Re8!> Now Karpov sets the second and decisive pin, which also attacks the Queen and threatens a wicked double attack (e.g. 32. Re8! Rxe8 33. Qxf7+ Kh8 34. Rxe8+ winning the Queen).
<32...Qxd6> is a desperate but futile attempt to hold.
Best according to Fritz is 32... c4, when White has a clear win after 33. Qxc4 Ne5 (diagram below)
click for larger view
34. R1xe5! Qb7 (diagram below)
click for larger view
35. Qxf7+! Qxf7 36. Nxf7 Bxe5 37. Rxf8+ Kxf8 38. Nxe5 Be4 39. Nd7+ Kf7 40. Nxb6 Ke6 41. d7 Ke7 42. a5 Bd3 43. f4 .
<33. Qxf7+!> The queen is perfectly safe in capturing the piece as the double absolute pin on the King makes the Black Rook's protection of the pinned Rook a mere illusion. By the way, this is the only clear winning move, as for example the tempting 33. Nxf7?? risks throwing away the win and losing to 33...Qd5! to .
<33...Kh8 34. Ne6> 1-0
Black resigns as the mate threat forces him to give up the Queen with 34...Qxe6 35. Qxe6 , or suffer an even greater disadvantage after 34...Bh6 35. Nxf8 Nxf8 36.Rxa8 .
P.S.: Karpov was not one to make speculative sacrifices like Tal, but obviously he was capable of some impressive sham sacrifices in a deep combination such as this one.
|Apr-09-11|| ||agb2002: From an Indian Defense, I suspect.
White has a bishop and a knight for the bishop pair.
Black threatens to win a pawn with 29... Bxe4 30.Rxe4 Qxd6.
The convergence of the white pieces on the black king side suggests 29.Bxf7+:
A) 29... Rxf7 30.Neg5
A.1) 30... hxg5 31.Nxg5
A.1.a) 31... Rdf8 32.Nxf7
A.1.a.i) 32... Rxf7 33.Re8+ Qxe8 34.Rxe8+ Bf8 35.Rxa8 + - [Q+2P vs B+N].
A.1.a.ii) 32... Kh7 33.Ng5+ Kh8 (33... Kh6 34.Qc4 Kxg5 35.Qh4+ Kf5 36.Qf4#) 34.Qc4 Bh6 35.Qh4 Kg7 36.Re7+ + -.
A.1.b) 31... Ne5 32.Rxe5
A.1.b.i) 32... Bxe5 33.Qxf7+ Kh8 34.Qh7#.
A.1.b.ii) 32... Qb7 33.Qxf7+ Qxf7 (33... Kh8 34.Re8+) 34.Nxf7 Kxf7 35.Re7+ Kf8 (35... Kf6 36.R1e6+ Kf5 37.g4+ Kxg4 38.Rxg7 + - [R+P vs B]) 36.d7 Bc6 37.Re8+ Rxe8 38.Rxd8+ Kf7 39.d8=Q + -.
A.1.c) 31... Qb7 32.Qxf7+ Kh8 33.Re8+ Nf8 (33... Rxe8 34.Rxe8+ Nf8 35.Rxf8+ Bxf8 36.Qxf8#) 34.Qxb7 Rxe8 (34... Bxb7 35.Rxd8 + - [2R+2P vs 2B]) 35.Rxe8 Bxb7 36.d7 + -.
A.2) 30... Rdf8 looks similar to A.1.a but even more favorable for White.
B) 29... Kh7 30.Bxg6+ Kxg6 31.Qc2
B.1) 31... Bxe4 32.Qxe4+ Kh5 (32... Kf7(6) 33.Qe6#) 33.g4#.
B.2) 31... Kh7 32.Nf6+ Kh8 33.Qh7#.
B.3) 31... Kf7 32.Neg5+ hxg5 (32... Kf6 33.Re6#) 33.Nxg5+ Kf6 34.Re6+ Kxg5 35.Qg6#.
B.4) 31... Nf6 32.Neg5+ Ne4 33.Nxe4 + -.
C) 29... Kh8 30.Bxg6 Bxe4 31.Bxe4 Qxd6 32.Bb1 followed by Qc2 with a winning attack (32... Nf6 33.Ne5 with the double threat Nf7+ and Ng6+).
|Apr-09-11|| ||FSR: Looks pretty easy: 29.Bxf7+ Rxf7 30.Neg5 hxg5 31.Nxg5 Rf8 32.Nxf7 Rxf7 33.Re8+. What am I missing?|
|Apr-09-11|| ||takchess: After seeing the answer and coming back to the puzzle after 4 hours. I set my chess clock for 20 minutes and gave it a long think. I'm trying to teach myself some patience and calculation muscle. An interesting experiment. |
i did see the danger of allowing black to gain a tempo with Qg7 as well as the knight position on f6.
|Apr-09-11|| ||FSR: OK, the immediate 32.Re8 is even better than my line.|
|Apr-09-11|| ||agb2002: 33.Qxf7 in my lines A.1.b.i and A.1.b.ii is a hallucination and 32.Nxf7 instead of 32.Re8 in A.1.a is a blunder that allows Black equalize after 32... Qb7 33.Ng5+ Qd5.|
|Apr-09-11|| ||Once: The deliciously opinionated Nimzowitsch coined the phrase "overprotection", and several generations of chess players drive themselves to distraction trying to work out exactly what he meant. I mea, just listen to these words of wisdom:|
"...the contact established between the strong point and the overprotector can only be of advantage to both parties. To the strong point because the prophylactic induced by such a process affords it the greatest security against possible attack; to the overprotector since the point serves him as a source of energy, from which he may continually draw strength."
No - me neither. I can just about understand the bit about the security against attack, buty the "source of energy"? Er ... nope. Zip. Nada. Nuffink.
But then it occured to me that if Nimzo had been born a few decades later, he would surely have been influenced by the artistic movements of the time. Most noticeably, the Hollywood summer blockbuster.
And that might have made him think in a slightly different direction. Instead of overprotection, we might have had the concept of over-attacking.
What do I mean by over-attacking? It's bringing a gun to a knife fight. It's the one good moment in the Star Wars prequels when Darth Maul unleashes his two-bladed light sabre. It's Crocodile Dundee facing down a punk with a switchblade by saying: "Naaah, that's not a knife ... <pulls out immense bowie knife> ... Now THAT's a knife."
Or in chess, it has to be our old friend the reloader. Attack a square once, the other guys defends, then attack the same square for a second time. Now that's a knife.
And for today's POTD, Karpov unleashes that most rare of weapons - a triple reloader. The white queen and bishop reload on f7, the two white rooks reload on e8 and the two white knights reload on g5.
Or as Neo said to Trinity: "We need guns...
... lots of guns."
|Apr-09-11|| ||morfishine: Absolutely nailed the first 3-moves. Feel chagrined that I considered, albeit fleetingly, <32.Re8> only to discard it and move on. One must not discard winning moves. Excellent puzzle.|
|Apr-09-11|| ||theodor: great game from Karpov!|
|Apr-09-11|| ||falso contacto: just knew the game.|
|Apr-09-11|| ||patzer2: <David2009> Thanks for the interesting study position for today's game. You often seem to come up with some variations that are difficult to win in these puzzles. <tacticalmonster> great solution to David's problem with <After 29 Bxf7+ Rxf7 30 Neg5 hxg5 31 Nxg5 Rf8 32 Re8! Qxe8 33 Rxe8 Ne5, White has the quiet move 34 Qe6!.>|
I struggled a bit in David's variation but after 34. Qe6! finding the win was a lot easier.
|Apr-09-11|| ||Slurpeeman: <David 2009> Yes there is inded a win (which I missed because I only considered Rxe5 instead of Rxf8+ due to Nf3, it just didn't occur to me to move the queen out of the way). |
So I found the win in the endgame position bentley found, and my line starts with g5, then h-pawn moves up, while the f-pawn moves once to f3 where it defends against devastating checks via Rh1+. I don't have the exact move order yet since I couldn't remember all checks and pawn moves I played, but Black ends up having to sac his Rook for one of passed pawns so it comes down to Q+p vs B+p.
An hour too late, and I would've discarded Karpov's combination as unsound.
|Apr-09-11|| ||solskytz: (to Domdaniel) well, to me actually, 29. Bxf7+ Rxf7 30. Neg5 hg 31. Nxg5 Rf8 32. Re8 Qxe8 33. Re8 Ne5 34. Rxf8+ Bxf8 35. Nxf7 doesn't seem all that wrong. |
Did you examine 35...Nf3+ 36. Qxf3 Bxf3 37. d7 Be7 (looks quite forced) 38. d8=Q+ Bxd8 39. Nxd8? white is a pawn up, can easily stop the c-pawn with his knight on c2 or c4 (the white squares), and has a devastating k-side majority. If white is winning here, Nxf7 can't really be considered weak, right?
|Apr-09-11|| ||sevenseaman: A light-veined cameo for your tired mind after the draining Karpov-Georgiev!|
click for larger view
White plays and mates in 3 moves.
|Apr-09-11|| ||TheBish: Karpov vs Kiril Georgiev, 1994|
White to play (29.?) "Very Difficult"
I have no time today, but I'm going to guess 29. Bxf7+(!) Rxf7 30. Neg5 hxg5 31. Nxg5 Rf8 32. Re7 as being a main line (maybe game).
Just enough time to check!
|Apr-09-11|| ||TheBish: Very close! "Missed it by that much!", as Maxwell Smart (Get Smart) used to say. May have seen this in the distant past, but can't remember.|
|Apr-09-11|| ||WhiteRook48: I got really close but I ended up inverting the move order, I tried 29 Neg5 first... black can play 29...Bxf3.
Thus I failed the puzzle|
|Apr-09-11|| ||James Bowman: <TheBish> would you believe I solved this puzzle in 10 seconds with my eyes closed "no" how about 2 minutes with one eye open "no" er ok would you believe I got a head ache after fifteen minutes and guessed the first three moves. |
Kinda fitting just had a son March 22cnd his name is Josiah Maxwell.
During my wifes cesarean section they asked me if she was an organ donar I said no but we gave a piano away once would that be good enough? Had my wife in stitches. My response could have been you got her open is anything missing, I mean really why ask me I never took inventory?
Sorry <TheBish> you got me started ;o]
|Apr-09-11|| ||sevenseaman: <Bowman>: Mordant humor; kinda painful but you hafta laf! "I never took inventory", ha ha!|
|Apr-09-11|| ||M.Hassan: "Very Difficult" White to play 29.?
Queen and Bishop battery eyeing f7 suggest the strting move:
32.Re7 Qb7 threatening mate on g2
I must have made a mistake somewhere.It should not take this long!!. Time to check
|Apr-09-11|| ||LIFE Master AJ: COLOR COMMENTARY
1.) White gets a slight edge.
2.) b2-b4 locks down Black's Q-side and prevents the freeing break ...c7-c5.
3.) Black eventually frees himself (a little) with ...a5. However, he is left with a backward b-pawn and a Rook on the horrible a5-square.
4.) Bereft of counterplay, Black decides to redeploy his KB to g7.
5.) Just when it looks like Karpov has been stymied, he explodes the center ... even though he is left with an isolated pawn.
6.) All of Karpov's pieces get to perfect squares.
7.) White kicks the BQ away with g3 and then slams the door with d6!
#8.) Karpov fixes a target on f7 ... and lowers the boom on poor Georgiev.
|Apr-09-11|| ||stst: was comparing the direct Bxf7+ and the quiet Nh4 to take g6, but find the direct line more appealing.
After pinning the Bk R@g7, Re8 is the killer, for Bk Q cannot caputre (guarded by yet another R@e1.)
Bk is actually lost at this point, QxP is merely prolonging, and the Bk K is basically cramped.
A very tiring Sat, now is real bed time, or the next puz will be out ...|
|Apr-10-11|| ||CHESSTTCAMPS: In this middlegame position, black has the two bishops, but white has the space advantage and the superior concentration of force directed towards the enemy king. The specific focus is on f7 and white is ready to strike now:|
I first considered 29.Neg5, but this would allow black more options. Now black must decide immediately whether or not to put the rook into a brutal pin.
A) 29... Rxf7 30.N4g5! hxg5 31.Nxg5 Rf8 32.Re8 (pinning the 2nd rook) Qb7 33.f3! (Rxf8+? Nxf8 forces an unwanted queen exchange) Qd5 34.Qxg6 B(/Q)d4+ 35.Kg2 and Qh7# follows soon.
A.1) 30... Bxf3? 31.Qxf7+ Kh8 32.Re8+ wins.
A.2) 32... Rxe8 33.Qxf7+ Kh8 34.Rxe8+ wins.
B) 29... Kh7 30.Qe6 Qb7 (g5 31.Qg6+ Kh8 32.Neg5 forces mate) 31.Qxg6+ Kh8 32.Nfg5! hxg5 33.Qh5+ Bh6 34.Qxh6#
C) 29... Kh8 30.Qe6 followed by Qg6 (transposing to B) or 30.Bxg6 should win easily.
Time for review.
|Apr-10-11|| ||CHESSTTCAMPS: Missed the 32... Qxd6 defense.|
|Aug-03-15|| ||whiteshark: Super-GM Ivan Sokolov explains this game in depth : http://www.youtube.com/watch?v=g3Cz... Learn and enjoy! :D|
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