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| Oct-11-11 | | Patriot: What's amazing is that after I finally looked at 27.Nc8+, the back rank weakness stood out like a flashing light. So seeing this efficiently depended on quickly considering each check without getting entangled in anything deep. |
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| Oct-11-11 | | newton296: saw Nc8+ but thought ...Qc5 refuted it.
I missed Rd8 mate after RxN QxQ Rd8++ |
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| Oct-11-11 | | newton296: maybe I'm showing my lack of opening knowledge here. but Rhe1 was s shocker to me! this is a some game by victor! a real sac festival. |
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| Oct-11-11 | | sevenseaman: Two tough pieces of visualization involved in this game are; 1. Whatever discovered check you choose, the N move must command influence over e7 - easy to see. 2. The R at b8 may not interfere with the mating procedure (Rd8#) - not so easy to see, even difficult. The only way you arrive at the 2nd visualization is when you compare the characteristics of 27. Nf5+ and 27. Nc8+. This takes time. May be 2-3 minutes for an experienced solver, 10 - 15 minutes for a callower one. That is why I will not call it a run-of-the-mill Tuesday puzzle but a much tougher one. |
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| Oct-11-11 | | newton296: <chrisowen: kuprechik the big man offload c8+ in wood preservation nor we hans it blue nd7 ha in bang on the moonshine in knight piece da cote am in it house again qa3 ursa windmill guillotine great bear tses miss both qxe7 next on rc8 low champion alekhine rack his brain would have found it the h5 lemon or a5?
record checkoff, in keebler company - film crew
rebranded poly-warner-cracker!>
I'm trying to figure out if your post or the puzzle is harder to understand? right now I leaning toward your post! |
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| Oct-11-11 | | Treestar: Took a minute or two to find the right square for the knight to go to, ie on <c8> & there is <Rd8#> to follow, now it looks familiar; just play the moves in the right order <27 Nc8+, Qc5 28Qxc5+, Nxc5 and hey presto 29Rd8#> Nice mate in 3 puzzle. |
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| Oct-11-11 | | CHESSTTCAMPS: White has two pawns for a bishop and a dangerous battery aimed at the black king. Our fairly straightforward task is to investigate which (if any) of the discovered checks can do serious damage. The natural checks Nb5+ and Nf5+ are both met by 27... Qc5, after which white must exchange queens and then spend a tempo to move the knight out of danger - probably lost for white. Slightly better is Ne4+ or Nb7+ (controlling c5 and preventing interposition), but with no clear continuation for white after 27...Ke8. But there is a somewhat counterintuitive shot that does the trick. 27.Nc8+! forces a quick decision:
A) 27... Ke8 28.Qe7#
B) 27... Qc5 28.Qxc5+ Nxc5 29.Rd8#
C) 27... Nc5 28.Qxc5+! Ke8 (Qxc5 29.Rd8#) 29.Qxc7 Rxc8 30.Qxc8+ Ke7 31.Rd7# This particular N+R edge mate in line B pops up one in a while, but is somewhat rare compared with an Arabian or Anastasia's Mate, more familiar R+N checkmates. Good Tuesday puzzle. |
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Oct-11-11
 | | agb2002: White has two pawns for a bishop.
The relative position of the white queen and knight and the black king suggests 27.Nc8+ to attack e7 and block the rook on b8: A) 27... Qc5 28.Qxc5+ Nxc5 29.Rd8#.
B) 27... Nc5 28.Qxc5+ Ke8 (28... Qxc5 29.Rd8#) 29.Qxc7 + -. C) 27... Ke8 28.Qe7#. |
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Oct-11-11
 | | kevin86: The knight move block's black rook and set up mate threats along the eighth row. |
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| Oct-11-11 | | Patriot: <newton296> <chrisowen...I'm trying to figure out if your post or the puzzle is harder to understand? right now I leaning toward your post!> Good luck with that! I think he does it just to be irritating. |
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Oct-11-11
 | | Gilmoy: <newton296: maybe I'm showing my lack of opening knowledge here. but Rhe1 was a shocker to me!> Perhaps just an unfamiliarity with Kupreichik :) He <always> hangs an N just to dupe the fish of the day into shattering his own Ps. He does this so regularly that the fish think, "I should think deeper and decline it -- but hey, this time it's winning for me, really it is!!" Eventually the fish stopped biting on his N sac + shallow tactics, so he had to offer N + bonus, and use medium tactics -- as here :) |
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| Oct-11-11 | | Marmot PFL: A lot of discoveries to look over before realizing that 27 Nc8+ is the best |
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| Oct-11-11 | | MaczynskiPratten: This reminds me of a famous puzzle where White mates in less than a move. Solution - lift the knight on d6 and discover the check (but still control e8 and f7). Sadly, it doesn't work here (even if it was legal) because Black can interpose. The original problem was WQ on a1, WN on f6, BK on h8, WK on h1 (or anywhere). |
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| Oct-11-11 | | srag: <ughaibu> and <Dr.J>: thanks a lot! |
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| Oct-11-11 | | Inco: Only thought of Nb5. |
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| Oct-11-11 | | JustAFish: Never try to solve puzzles on little sleep at 2:00 a.m. Bleary-eyed, I saw Nc8, but I also saw Qc5 which blocked it and gave up analysis at that point. It would have required a slightly more awake me to note that the black king's flight square was covered by the knight. |
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| Oct-11-11 | | gofer: It looks like <20 ... Qxe7> would have allowed black to hold on much longer... |
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| Oct-11-11 | | LIFE Master AJ: Kupreichik vs Tseshkovsky, 1976. White to move, (27. '?').
(Did this on notepad, working only from the diagram.) OK, I think I have this one.
I looked at this earlier in the day, but nothing sprang to mind. White is a piece down, but Black's position is highly disorganized. The second time around, I was perplexed for a couple of minutes. (First, I quickly ran through my checklist.) In my mind, the White Knight kept cart-wheeling around to different squares, however, there was no descisive result. I looked at 27.Nf5+, but Black plays 27...Qc5; and the second player looks to be OK. 27.Nb5+, hitting the BQ does nothing, again 27...Qc5; seems to hold. Then I (finally) found the idea.
27.Nc8!!+, Nc5; (Forced. If 27...Ke8?; then 28.Qe7#.) 28.Qxc5+!, QxQ/c5; (Might as well, otherwise the BQ is lost for nothing.) 29.Rd8#. And let's see if the hyper-critical, pendantic "nit-pickers" ... can find anything wrong with this post! |
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| Oct-11-11 | | LIFE Master AJ: BTW, I am "two-for-two," this week. (But I am sure a lot of thers are as well!) :) |
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| Oct-11-11 | | BOSTER: Today POTD arose the tricky question:
can the queen trust own knight?
I'll give you one ex.
When Spassky was young, he believed that the knight is faithful guy and played such position, putting his queen on g4 under protection by knight f6. 
click for larger view But Korchnoi has already known that knight with it's royal priviledge, that none of enemy's pieces can't block it's path, has unpredictable behavior, and he played Nd5! and black resignhed. (after Qxf3 Nxf6+ Ke7 white knight had the time to return back Nd5+).
Be careful to put the queen under knight protection! |
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| Oct-11-11 | | sevenseaman: <BOSTER> A wonderful illustration! Although its a time-worn trick with N's special moves, Korchnoi was still a fox in thinking of it in this situation. |
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| Oct-11-11 | | stst: Easy only if one picks the good N move, instead of the obvious Nb5 fork, the hidden Nc8, or even Nc7 are good.
27.Nc8, either Qc5 or Nc5
28.Qxc5 followed by Rd8#
IF 27.Nc7 dis+ , again either N or Qc5 will lose a piece when WNxc5, and Bk has no good move to follow.
Interesting! |
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| Oct-11-11 | | M.Hassan: "Easy" White to play 27.?
White has two pawns for a Bishop.
I spent some time trying to give discovered check by Knight movements of Nb4, Nb2 and even Ne4. None worked!
The knight can move to eight squares from where it stands and one can result in checkmate and finally I found it:27.Nc8+
This move delivers check and blocks the 8th rank for the Rook 27.........Nc4 <if...Ke8 28.Qe7#> 28.Qxc4+ Qxc4 (forced or else Q is lost)
29.Rd8#
I think this must be it |
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Oct-12-11
 | | Peligroso Patzer: <HeMateMe: A tougher problem: who won the '76 USSR championship?> (from page 1 of this thread) Karpov took clear first by a full point in the 1976 Soviet Championship on a result of +8 -1 (to Geller) =8. Balashov was second (on 11/17), with Petrosian and Polugaevsky equal third with 10.5 points. Interestingly, although he defeated Smyslov, Geller, Taimanov and Sveshnikov (in addition to this fine win) during the tournament, Kuprechik had only 2 draws and no fewer than 10 losses to finish clear 18th (in a field of 18, i.e., dead last) in this event. Crosstable: http://al20102007.narod.ru/ch_urs/1... |
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Oct-12-11
 | | chrisowen: <newton296> a dali feint good why it in aim clockung appled pomfruit get eh codbones to pickled delight kuprechik cent nc8 by eck~ |
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sac: 16.Rhe1