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< Earlier Kibitzing · PAGE 1 OF 3 ·
Later Kibitzing> |
| Oct-17-12 | | hominid: How about black respond 19... Bb7 |
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| Oct-17-12 | | vinidivici: Nice combination. A little bit hard for Wednesday.
Anyway. Good puzzle |
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| Oct-17-12 | | Blunderdome: If 19...Bb7 white has 20. Rxh6+ gxh6 21. Qg6.
I guess 19...Qe5 is the stickiest defense for black. |
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Oct-17-12
 | | Phony Benoni: Took a few minutes to put the pieces together. None of the obvious sacrifices seemed to work. Thought about setting up a potential fork with ideas like 19.Rd6 or 19.Bxb5 Qe5 20.Nxf7+, but 20...Rxf7 21.Rd8+ Ng8 is fine for Black. 19.Nxf7 Rxf7 20.Qg6 didn't seem to go anywhere. Then it finally hit me that the fork was on after 19.Bxf7 Rxf7 20.Rd8+. If Black declines the bishop, White has ideas like 20.Qg6 planning 21.Rxh6+ gxh6 22.Qxh6+ Nh7 23.Qxh7#. This looks hard to defend, even with giving up the exchange on f7. Basically a case of spinning all the wheels until the three cherries came up. |
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| Oct-17-12 | | vinidivici: <hominid> in case of that, the easiest way is to draw back the bishop with overwhelmingly attack advantage. or Qg6 looks good too.
I think. |
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| Oct-17-12 | | Razgriz: I didn't get it at all. .__. |
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| Oct-17-12 | | kasputine: <hominid>
If black responds 19 ... Bb7 then:
20 Rxh6 gxh6
21 Qg6 Rxf7
22 Nxf7 wins. |
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| Oct-17-12 | | Steve.Patzer: If 19...Bb7 20.Qg6 |
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| Oct-17-12 | | Ray C: What am I missing after 20. Rd8+? Clearly Ng8 is no good, and Ne8 and Rf8 likewise bring immediate doom. But 20...Qxd8 21. Nxf7+ Kg8 22. Nxd8 and Black is way down in material, perhaps he might as well resign, but that still isn't checkmate. |
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| Oct-17-12 | | vinidivici: <kasputine>
Yes, Thats it. A decent calculation surely would find it,. |
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| Oct-17-12 | | Caissas Clown: Similar to yesterday insofar as it was played to mate in a variation where black was more worried about saving his Q than his K. Fairly easy for a Wednesday , which is usually about my limit. |
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Oct-17-12
 | | al wazir: 19. Bxf7 Bg4. Now what?
I suppose 20. f3 Rxf7 21. Nxf7+ Qxf7 22. fxg4. White is up an exchange and a ♙. |
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| Oct-17-12 | | Abdel Irada: <Don't throw me in the briar patch, Brer Legky!> White's knight on g5 and bishop on c4 are both attacked by pawns; but unlike the knight, the bishop really is in danger. This suggests moving it, and the "danger square" f7 invites. <<>19. Bxf7!...> Now Black must tread carefully. Having forced the bishop to go exactly where it wanted to be, he cannot take it. If he does, he loses as follows: <<>19. ...Rxf7?
20. Rd8†!, Qxd8>
Not 20. ...Ng8??; 21. Qh7#.
<<>21. Nxf7†  > After the forced 21. ...Kf8; 22. Nxd8, White has a winning material advantage. What, then, is Black to do? I don't see many options that change anything save for the worse. Let's assume, then, that he tries a "safe" developing move: <<<>>(1) 19. ...Bd7
20. Qg6...>
Here is another advantage accruing from 19. Bxf7: The pawn that White has won was also the pawn that prevented this decisive incursion. The threat is 21. Rxh6†, gxh6; 22. Qxh6†, Nh7; 23. Qxh7#. <<<>>20. ...Rxf7
21. Rxh6†...>
White does it anyway. The bishop is no longer a factor. <<<>>21. ...gxh6> No better is 21. ...Kg8; 22. Qxf7#.
<<<>>22. Nxf7#>. Black is mated because he no longer controls f7, enabling the sac on h6. So, what if he develops in a way that leaves the queen watching f7? <<<>>(2) 19. ...Bb7
20. Qg6, Rxf7
21. Rxh6†...>
A good idea is hard to stop.
<<<>>21. ...Kg8> Black fares no better with 22. ...gxh6; 23. Nxf7†, Qxf7; 24. Qxf7 . <<<>>22. Nxf7 > White not only leads by the exchange and two pawns, but his attack goes on, with a threat of 23. Rh8#. And if Black takes the knight, 23. Rh8† wins the queen. |
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| Oct-17-12 | | Infohunter: <Ray C: What am I missing after 20. Rd8+? Clearly Ng8 is no good, and Ne8 and Rf8 likewise bring immediate doom. But 20...Qxd8 21. Nxf7+ Kg8 22. Nxd8 and Black is way down in material, perhaps he might as well resign, but that still isn't checkmate.> For what concerns moves *per se* you are not missing anything. However, in your line Black's material deficit--Queen for a mere Bishop (with a Pawn minus thrown in for good measure)--is so great that his eventual loss is virtually as certain as if it were actual checkmate. For reasons known only to him Legky chose to end it quickly in this game. |
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| Oct-17-12 | | Abdel Irada: <RayC>: The object of <CG.com> puzzles is to find the best move in the position. Sometimes this will lead to mate, but more often, it will simply force a winning advantage. This is rather different from the "White to play and mate in __" variety of problems, but no less valid. |
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Oct-17-12
 | | scormus: 19 Bxf7. Quite easy .... if you could count on1 19 ... Rxc7. Otherwise I was thinking 20 Qg6 as the natural follow up A cool continuation would be 19 ... Qe5 20 Qe6 Qc5 21 Rxh6+ gxh6 22 Qxh6+ Nh7 23 Nxh7 Qxh7 24 Qxf8+ 1-0 |
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| Oct-17-12 | | abuzic: Both 19.Nxf7+ and 19.Bxf7 should lead to winning position: -19.Nxf7+ Rxf7 20.Bxf7 Qxf7 21.Rd8+ Ng8 22.Qxc6 Bb7 23.Rxh6+ gxh6 24.Qxh6+ Qh7 25.Qxh7+ Kxh7 26.Rd7+ Kg6 27.Rxb7
click for larger view-19.Bxf7 Qe5 20.f4
<20.Qxc6 loses to 20...Qxg5> 20...Qxe3+ 21.Kh1 Qe7 22.Qg6 Bf5 23.Qxf5 Rad8 24.Rc1 Rxf7 25.Nxf7+ Qxf7
click for larger view |
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| Oct-17-12 | | dick50: White Knight and Rook (on h4) have already reached the battlefield and ready for final assault on Black King. White Queen is already poised to enter the arena for the final assault, but needs an entry point. So the main objective of Bishop sacrifice 19 Bxf7 is to eliminate pawn on f7 so as to post the Queen on g6. Acceptance of this Bishop sacrifice, however opens opportunities for quicker finishes. On any move by Black other than !9...Rxf7, White will post Queen on g6. Now White Queen, Rook, Knight, Bishop are all very close to Black King. Other white Rook also can join quickly if required. Black King will not be able to survive for long |
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| Oct-17-12 | | Robespierre: As I often do on Weds (& Thurs) puzzles, I identified the 'elements' or 'building blocks' of the answer, but I failed to put them together in the right order. |
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| Oct-17-12 | | rilkefan: I wanted to play 19.Qg6, but 19.Bxf7 first works a lot better. I figured black ought to have some defense even though he couldn't play ...Rxf7, but white just has too great a concentration of force on the weakened black kingside. Excellent puzzle, wish I had solved it a bit quicker than the several minutes it took me. |
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| Oct-17-12 | | Steve.Patzer: Blunderdome is correct. After 19....Bb720.Rxg6+ is best. |
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| Oct-17-12 | | Steve.Patzer: If 19....Bg4 20.Rxh6+ gxh6 21. Qg6 |
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| Oct-17-12 | | Djoker: What happens after 19...Bf5? |
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| Oct-17-12 | | dick50: After 19...Bf5,
20 Qxf5 Rxf7 21 Nxf7 Qxf7 (White is pawn plus exchange up). Now other white Rook enters the arena vide 22 Rd6. White's bind on King side would continue , while loose Black pawns on c6 and b5 would be captured. Should be decisive. |
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Oct-17-12
 | | FSR: 19.Bxf7! is very strong. Black can't take: 19...Rxf7 20.Rd8+! winning the queen after 20...Qxd8 21.Nf7+ or the king after 20...Ng8 21.Qh7#. If Black doesn't take, the threat of 20.Qg6! is crushing, e.g. 19...Bg4 (the sad 19...Bf5 20.Qxf5 Rxf7 21.Nxf7+ Qxf7 looks best, albeit hopeless for Black) 20.Qg6! (anyway), and now Black is mated after 20...Bxd1 21.Rxh6+ gxh6 22.Qxh6+ Nh7 23.Qxh7#, or lost after 20...Rxf7 21.Nxf7+ Qxf7 (21...Kg8 22.Nxh6+ Kh8 23.Nf7+ Kh8 24.Rh8#) 22.Qxf7 Bxd1. Black would then have only bishop and knight for queen, and a passive position to boot. White can start vacuuming up pawns with 23.Qc7, or sac an exchange to accelerate the process and open up Black's king more with 23.Rxh6+ gxh6 24.Qxf6+ Kh7 25.Qxc6. And yes, a bit hard for a Wednesday. |
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Kibitzing
sac: 19.Bxf7