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Later Kibitzing> |
| Feb-24-16 | | agb2002: Already seen. |
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| Feb-24-16 | | lost in space: already seen and not forgotten. In my age it is more important that it is not forgotten. |
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| Feb-24-16 | | The Kings Domain: Another one of those simple puzzles that took me a long time to figure out :-). Good game. |
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| Feb-24-16 | | diagonalley: 32.R-Q7+ does it... (could be a tuesday puzzle, but the proliferation of active pieces somewhat obscures the solution) |
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| Feb-24-16 | | Once: Now that is mildly irritating. I was feeling all warm and smug for spotting the solution this morning and then when I read the kibitzing I realise that it's an old puzzle and I've been here before. I suppose it's a sign of encroaching old age that I can't remember what I've done and what I imagined (or wished!) I'd done. Or in this case, what I had forgotten I've done. |
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| Feb-24-16 | | stacase: Once you notice that Black's Knight is pinned against an undefended Rook .... |
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| Feb-24-16 | | WorstPlayerEver: Hmm.. the trouble with this puzzle is that I found the solution á tempo, but then I noticed White is a piece down and Black has a nasty pawn on e3... So I started to calculate 33. Qg7 Rf8 and then? 34. Rf7 Rf7 35. Qf7 Kd8 but now I noticed taking the N leads to an endgame with bishops of opposite colors and I didn't like it lol After a while I just gave up and I was relieved that my engine came up with 33. Qg7 Rf8 34. Rd1 Tricky, but at least it doesn't lead to an endgame in which the win is still asking a lot of skill from White. 34. Rd1 is also far more instructive (read: decisive) if one notices at first White is still a piece down in this variation! |
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| Feb-24-16 | | Ayaend: Hey all, What a better defense on 26.Nf5 ?
26...gxf4 idk... |
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| Feb-24-16 | | cocker: A premature resignation by my standards. |
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| Feb-24-16 | | saturn2: I was stuck for a more than quarter of an hour in Rxf7, exf7, and Qxe5 but finally went for Rxd7. Now when I look at it it seems rather plain and I ask myself why I wasted so much time for other moves. |
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| Feb-24-16 | | gofer: This one seems quite easy... ...but the win is by no means as clear-cut
as we might expect for a Wednesday.
<32 Rd7+ Nxd7>
<33 Qxg7 ...>
33 ... Ne5
34 Rxf7+ Nf7
35 Qf6+! 
<33 ... Rf8>
<34 exd7 Kxd7>
<35 Rxf7+ Rxf7>
<36 Qxf7+ Kc8>
<37 Qxc7+ Kxc7>
<38 Bxa6 >
click for larger view~~~
Yep! |
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| Feb-24-16 | | patzer2: For our regulars here, today's Wednesday puzzle was more like a recent TV rerun, a memory test or a surprise pop quiz on the material covered last month. No matter. I passed the test with the game moves <32 Rd7+ Nxd7 33 Qxg7 1-0> According to the computers, had Black not resigned after 33. Qxg7, the strongest continuation is 33...Rf8 34. Rd1! (+46.10 @ 45 depth, Stockfish) as shown in the diagram below: 
click for larger viewFrom here, after 33...Rf8 34. Rd1! (diagram above), play might continue 34...Ne5 (34... Qe5 35. Rxd7+ Ke8 36. Qxe5 Be7 37. Qb8+ Bd8 38. Qxd8#) 35. Qf6+ Ke8 36. Bxa6 Bd6 (36... Qe7 37. Bb5+ Nd7 38. Bxd7+ Kd8 39. Qe5 Ba7 40. Qa5+ Bb6 41. Qxb6#) 37. Bb5+ Nc6 38. e7 e2 39. exf8=Q+ Kxf8 40. Rh1 e1=Q+ 41. Rxe1 Be5 42. Qxc6 Qxc6 43. Bxc6 Bf4 44. a4 (#20, Deep Fritz 15 @ 25 depth). Black's last best chance to hold the balance might have been by replacing <21...Nd7>, allowing 22. g5!  (+0.57 @ 26 depth, Komdo 9.3) with 21...h5 = (0.00 @ 23 depth, Komdo 9.02). |
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| Feb-24-16 | | thegoodanarchist: I found the first move. Then my conscience asked me, "Who am I, to decide how Anand should play?" So I jumped right to the game score to just enjoy the play of a World Champion, without trying to play the position myself. That is my brain on insomnia. |
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| Feb-24-16 | | patzer2: <gofer> After 33...Ne5, the computers finds 34. Qf6+ with a forced mate (#9 @ 42 depth, Stockfish 7). |
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Feb-24-16
 | | gawain: I solved this one--but I can't pat myself on the back. It seems that maybe I have seen this finish somewhere before. |
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Feb-24-16
 | | Jimfromprovidence: After many comments about what wins after 32 Rd7+ Nxd7 33 Qxg7 Rf8, let us throw 34 b4 into the mix.
click for larger viewIt's fund to work out and shows just how strong white's position is. |
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| Feb-24-16 | | kevin86: My misteak: I tried the queen sac...hoped it would work...and I wound up in the ditch. |
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| Feb-24-16 | | BOSTER: < jamesmaskell: Kazim never looked like breaking through>.
This is the pos after 28...gxf4 closing "f" file, instead of 28...Rg8.
click for larger view
With white knight too far from actions it is difficult to say that white is better. |
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| Feb-24-16 | | jith1207: Yep, I remembered this game from last year. As soon as I saw Anand Vs Kasim, I was wondering if that's the same game - a quick look at the Queen's pin against the Black Rook confirmed the same. I remember having fun going through all the lines last year from all these wonderful posters last year, and I am delighted to relive again. Sometimes, some games are too good to not revisit, I agree with <CG>. |
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| Feb-24-16 | | YetAnotherAmateur: Finding the game line was not too difficult. You just need to check forcing moves, and you find 32. Rd7+ Nxd7 (Ke8/f8 33. Rxc7 )
33. Qxg7 and now black can't stop both mate and promotion of the e-pawn. |
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| Feb-24-16 | | YetAnotherAmateur: <gofer> Why would you play your continuation rather than, say:
33. ... Ne5
34. exf7
A) ... Nxf7
35. Rxf7+ followed by Qf6# or Qf8#
B) ... Rf8
35. g6 and whether fighting or fleeing I don't see how black doesn't concede a promotion. |
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| Feb-24-16 | | catlover: Well, I was able to visualize the game continuation up to when black resigned, but I did not really think it was a winning position. I'm not sure that counts for solving the puzzle. |
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| Feb-24-16 | | WorstPlayerEver: I looked at it for a while, made myself some coffee..
..and soon I noticed the mate in 30 moves (59 plies). Guess I made some progression lately ;)
However, after 32. Rd7 Nd7 33. Qg7 Rf8 34. Rd1 is not easy to find, since White is still a piece down. |
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| Feb-24-16 | | houtenton: <Jimfromprovidence> What is special about b4? No need to
make it complicated. I played here 34.Rxf7 Rxf7 35.Qxf7 Kd8
36.Qxd7 Qxd7 37.exd7 Kxd7 38.g6 Bf8 39.Bxa6 and 1-0.
It's becoming clear more ad more to me that this kibitzing box
is a meeting place for retired chessloving grandfathers with
chessplaying grandchildren. Nothing wrong with it, I don't
feel alone, I'm 70 years old. The difference with most of
the older boys over here is that you seem to have the time
every day to play chess almost the whole day (?). There is
a grandmother here too, not playing chess, asking at least
some attention. And so is my bike (can't play chess either).
Well, taking the POTD in my head or in my phone, I try
to solve it, or at least think about it outdoor on my bike.
Recognizable? Are there by the way any grandmothers among us,
or is it a typical man society? |
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| Feb-24-16 | | stst: Very late to the game..
The two W Rooks are in excellent position to strike/sac, but which one first/better?Opt for the f-one:
32.Rxf7+
(A)
32...Nxf7
33.Qxf7 pins ....
(Ai)
33................Ke8
34.Qg8+ Ke7
35.Qxf7#
(Aii)
33................Rf8 (try to protect N)
34.Rd7 forks, and Black Q lost
(Aiii)
33................Rd8 (to stop Rd7 forks)
34.Qxf7#
(B)
32................RxR
33.exf7
(Bi)
33................Nxf7
34.Qg7 pins
(Bia)
34.................Ke8
same story ...jack up the K back to e7
35.Qg8+ Ke7
36.Qxf7#
(Bib)
34..............Rf8
35.g6 and the N is doomed
(Bic)
34................e2 (rush to promote?)
35.Qxf7#
etc etc, once the N on e5 clears the path, the W Q exerts tremendous pressure on the f and g files. But of course the Black N can stay on e5, thus
(C)32........... RxR
33.exR Rf8 (to stop promotion)
34.g6 and again if Nxg6 allows W Q access to g7 etc etc |
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Kibitzing
sac: 32.Rd7+
