|
< Earlier Kibitzing · PAGE 2 OF 4 ·
Later Kibitzing> |
Dec-06-08
 | | chrisowen: No cautious or dilatory strategy here by the young master, it is a fervent attack calculated precisely ...20.Nxf7 Kxf7 Rxe6!. What if 24..Ne6? Does the rook sac work if he fires again? |
 |
| Dec-06-08 | | FabrikaLaHun: I saw 20.Nxf7 forking the rook and bishop and the follow-on 21.Rxe6. Not much after that due to a "foggy" brain from too much fun last night. I'm new to this whole daily puzzle thing but it seems there really weren't many other better moves. Is it rated harder b/c the line runs on longer after that rather than an easy mate? Agree with <al wazir> above that <"I found the first move, aided by a big hint (the fact that <CG> set this as a puzzle)"> My problem would be getting to that point in the game....this was pretty. Nice game by Caruana. |
|
| Dec-06-08 | | goodevans: How difficult does a puzzle have to be before they call it insane? I guessed what the first two moves would be but after that … wow! Incidentally, <dzechiel: 21 … Kxe6 22 Bc4+ Bd5 23 Qe4+ Ne5 24 Qxd5+ Ke7
I dunno, this isn't ending as quickly as I would like.>: I’d have thought simply 25 Re1 would have been enough to have brought about a resignation. |
|
Dec-06-08
 | | Eyal: <chrisowen: What if 24..Ne6?> It loses to 25.Qg4, with ideas of Bc4, Bxd6+ and Qxg7+. If 25...Rg8, then 26.Bxd6+ Qxd6 27.f4, to be followed by f5. |
|
| Dec-06-08 | | piever: Wow, astonishing....
After spending some time trying to find a solution all I came up with is: "well, 20. Nxf7 Kxf7 21. Rxe6 deserves attention..."
Excellent game by Caruana! |
|
Dec-06-08
 | | johnlspouge: Saturday (Very Difficult)
F Caruana vs E Berg, 2008 (20.?) White to play and win.
Material: Even. The Black Kg8 has 2 legal moves, both to dark squares on the back rank. The White Ne5, supported by Re1 and Bg3, attacks Pf7. The White Bd3 controls h7. The White Qh4 gives White a huge local superiority at the Black K-position. Only the White Rf1 requires activation. The White Kh1 is relatively secure, although Bb7 and Qc7 could create threats along the a8-h1 diagonal. Candidates (20.): Nxf7
20.Nxf7 (threatening 21.Nxd6)
20…Kxf7 [Bxg3 21.fxg3 loses a P] [else, drop a P]
21.Rxe6 (threatening 22.Rxd6, winning a P to start)
Beside counterattack (which is infeasible here), there are 4 defenses to the threat of capture: (A) capture the attacker (Re6); (B) protect the attacked piece (Bd6) again; (C) interpose a piece; or (D) move the attacked piece (Bd6). Black cannot accept the second sacrifice and capture the attacker, however: (1) 21…Kxe6 22.Bc4+ Bd5 23.Qe4+
(threatening 24.Qxd5+ and mate soon)
23…Ne5 [else, material loss to avoid mate]
24.Qxd5+ Kd7 [Ke7 25.Re1] [Kf6 25.Qe6+ and mate soon] 25.Bxe5
The Black Kd7 is trapped in the center [25…Kc8 26.Qxa8+]. Although material is now equal, Ra8 is out of play, so White is essentially a B up during an attack and should win. (2) 21…Ne5 22.Rxe5 Bxe5 [else, drop 2P]
23.Qh5+ (threatening 24.Bxe5)
Black cannot defend Be5 [23…K protects B 24.Qf5+ etc.], so White has material equality with a winning attack. (3) 21…Bxg3 22.Re7+ Kg8 [Kf8 23.fxg3+ etc.]
23.Rxg7+ Kxg7 24.Qg4+ then 25.Qg7# |
|
Dec-06-08
| | johnlspouge: < <Slurpeeman> wrote: [snip] can someone share the link to the Sunday's puzzle, with me, please? > Click on my or <dzechiel>'s handle to get to our kibitzes, which are almost exclusively to puzzles. At <minasina>'s suggestion, we now record the move for every puzzle. < <goodevans> wrote: How difficult does a puzzle have to be before they call it insane? > Indeed, I tremble to think what tomorrow will bring. Given all the possibilities, I did not analyze 21...Nc5. |
|
| Dec-06-08 | | SufferingBruin: I was familiar with this one from following the Olympiad. I played it over and over again, wondering how on earth I can ever expect to be able to play chess like that. So, Fabi... how about wearing the red, white and azure in the next Olympiad? |
|
Dec-06-08
| | johnlspouge: In my Variation (3), Toga points out that 24.Qg4+ Kh8 wins for Black, so White should play 24.Qe7+ with a forced mate. Otherwise, the analysis is alright. |
|
Dec-06-08
 | | berbanz: why can't black play 28...Qd1 ? |
|
Dec-06-08
| | johnlspouge: < <SufferingBruin> wrote: [snip] I played it over and over again, wondering how on earth I can ever expect to be able to play chess like that. > Complete obsession with chess is probably a good start :) |
|
| Dec-06-08 | | Samagonka: Cut and clear solution today. I'm still digesting it. |
|
| Dec-06-08 | | njchess: I remember this game from the recent Olympiad, so I knew the sequence already. 20. Nxf7 Kxf7 is pretty straightforward, but the question of what next often plagues players. Qh6+ is one move that looks better than it is. While it check's Black's king, it also allows him an avenue of escape via Kf8. What makes Rxe6 so good is that it gives White open lines of attack on the king. Black dare not take the rook because of 22. Bc4+ Bd5 23. Qe4+. Great play by Caruana to take advantage of the seemingly innocuous 19. ... Nd7?; a normal enough move played at precisely the wrong time. |
|
Dec-06-08
 | | whiteshark: easier than yesterday in my opinion. Was able to see it, yesterday was impossible for me, didn't even consider the played move. |
|
Dec-06-08
| | johnlspouge: < <berbanz> wrote: why can't black play 28...Qd1 ? > Discovered checks provide peremptory defense: 29.Re1+ - a useful trick to remember. |
|
Dec-06-08
 | | Kinghunt: 28...  d1 loses to 29.  e1+ |
|
| Dec-06-08 | | anandrulez: csn anyone tell me what will happen if black plays kxe6 ( aceept rook sac) and on bc4 play kf5 ? |
|
| Dec-06-08 | | blair45: <<dzecheil>> and black doesn't have time for the zwischenzug 20...Bxg3 because once white recaptures with 21 fxg3 the rook now protects the knight against capture. So...
Other interesting lines develop after 21.Nxh6 ch.gxh6 22.Qg4 ch.Kf8 23.fxg3ch.Ke8 24.Qxe6# or 21. ... Kf8 22.fxg3ch. or 21. ...Kh8 22.Nf7 dbl. ch. Kg8 23. fxg3 |
|
| Dec-06-08 | | veerar: 13... Rfd8.Is it the wrong rook,as they say?Superb game by the Italian,teenager,Fabiana Caruana! |
|
Dec-06-08
 | | Jimfromprovidence: I found what I thought was a clever line that unfortunately did not work.
21…Qc6 ?! (threatening mate in one)
click for larger view
Then after 22 f3 (not Be4) I followed with 22… Bxg3 (hoping to win material and force a queen trade).
click for larger viewBut this line fails to 23 Qe7+!. Now black is losing after 23…Kg8 24 Rxc6 Bxc6 25 Qe6+ Kh8 26 Qxc6.
click for larger view |
|
Dec-06-08
 | | al wazir: <Eyal: 24.Bc4+ first> I found that myself after I posted. But thanks once again. |
|
Dec-06-08
| | Eyal: <Jimfromprovidence: I found what I thought was a clever line that unfortunately did not work. 21...Qc6 ?! (threatening mate in one) Then after 22 f3 (not Be4) I followed with 22… Bxg3 (hoping to win material and force a queen trade). But this line fails to 23 Qe7+!. Now black is losing after 23…Kg8 24 Rxc6 Bxc6 25 Qe6+ Kh8 26 Qxc6.> Another line worth mentioning after 21...Qc6 22.f3 is 22...Nf6 23.Rxf6+! gxf6 24.Qh5+ Ke7 25.Re1+ Kd7 26.Bb5. |
|
| Dec-06-08 | | spreadsanity: White doesn't end up with as much of an advantage if black plays 21...Ne5 |
|
Dec-06-08
 | | Once: It was my son's birthday party today. Fourteen boisterous 7 to 8 year olds alternately trying to kill each other, smear pizza over the the church hall floor and see how loud they can scream. Back home, a well-deserved glass of Uisge Beathe and the saturday CG puzzle of the day. But I have to confess that my ears are still ringing, so I haven't got the energy to calculate any further than 20. Nxf7 Kxf7 21. Rxe6. Again we see the limitations of a defensive knight. The Nd7 blocks black's second rank and turns the Qc7 into little more than a tall bishop. I feel a diagram coming on ... We tend to focus on pattern recognition of the squares that a knight can control. But what about the squares that a knight cannot control? Here they are: 
click for larger viewIn most of our recent POTDs we have had attacks slipping past clumsy defensive knights. Great in attack - rubbish in defence. Can't type any more today. I've got a headache. Today experience might convince a lesser man of the virtues of chastity ... |
|
Dec-06-08
| | johnlspouge: < <spreadsanity> wrote: White doesn't end up with as much of an advantage if black plays 21...Ne5 > Because I missed 21...Nc5 but analyzed 21...Ne5, I hoped you were right. I miss far too many accurate defenses. Toga thinks 21...Nc5 better than 21...Ne5, however. |
|
|
|
< Earlier Kibitzing · PAGE 2 OF 4 ·
Later Kibitzing> |
