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Sep-09-12
 | | chessgames.com: We erroneously listed this puzzle as 30.? when in fact it was intended to be Black to move 30...? Our apologies if this caused any wasted efforts; fortunately we fixed it in short order. |
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| Sep-09-12 | | andyatchess: Qxf3? |
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Sep-09-12
 | | andrewjsacks: <chessgames.com> Thank you. Mistakes can happen anywhere and to anyone, but this quick correction and follow-up note display the type of professionalism that characterizes the management of this site, and it is appreciated by many here. |
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| Sep-09-12 | | jpolchinski: If 34. Qxf3, R8e3 35. Qf1, Rxa2 leads to zugzwang, e.g. 36. Rg2, Rxh3+ 37 Kg1, Bb6+ |
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| Sep-09-12 | | labrats5: @andyatches
If 34. Qxf3?, then Re8e3 threatening mate with Rh3, so white must go to Qf1. Notice how now none of whites pieces can move. If he moves the queen, its mate with Rh3. If he moves the Rook, then Re1 loses the queen. So now black can move Ba5, Bc3, Be5 threatening mate with Rh2, and white can do nothing to stop it without sacrificing the queen. |
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Sep-09-12
 | | al wazir: Even with the clue that this is a puzzle I am clueless. I would have played 30...Qd7. In the game as played, what's wrong with 34. Qxf3 ? If 34...R8e3, then 35. Qf1. Now what? I suppose 35...Ba5, with Zugzwang. (36. c5, the only move I can think of, doesn't work.) Is that right? And both players saw this??? |
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Sep-09-12
| | al wazir: <labrat>: You're ahead of me, but I'm going to leave my post. I'm that stunned by this combination. |
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| Sep-09-12 | | newzild: I went for 30...Rxe4 31. Rxg5 Re1+ 32. Rg1 Rfe8 33. Qf2, as played in the game. However, instead of 33...R1e2, I thought Black had to play 33...R1e3 followed by 34...Bb6 and 35...R8e4. So no point for me today.
Can anybody see the win after 34. Qxf3? Presumably Black plays 34...R8e3 35. Qf1 (forced) Ba5, when I can't see a forced win for Black, although White is in zugzwang. |
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| Sep-09-12 | | newzild: Looking at the comments, <labrats5> has answered my question to my satisfaction. I see that <al wazir> wondered the same thing. I would be really surprised if anybody gets today's puzzle correctly without using a board and pieces. |
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| Sep-09-12 | | rilkefan: I got the first two moves immediately but didn't consider 32...Rfe8 - instead I only looked at ...Rxg1/Re8, which is obviously not as good. Probably pushing wood I would have seen the correct order. In the game line I would have played 34...R8e4, which comes to the same thing. My guess is that this will generally be considered an easy Sunday. |
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Sep-09-12
 | | An Englishman: Good Evening: Maybe a little too easy for Sunday; I had to work at this one, but I finally solved it. After the first three moves Black has such a strong grip on the position that perhaps <newzild's> will also win in the long run. |
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Sep-09-12
 | | Tiggler: After the first two moves as in the game, I did not chose 32. .. Rfe8, because like others, I did not see the answer to 34.Qxf3. Instead I chose 32. ... Re2 and attempted to analyze the lines after 33. (a)Qh3 or (b)Qg3. (a)33. ... f2
34. Rf1 Rfe8
35. Qg3 Bb6
36. Kg2 (what else - white is in volkswagon) Re1
(b)33. ... f2
34. Rf1 Rfe8
35. Rxf2 Re1+
36. Kg2 Bb6
In each case black seems to have an edge, but none of this is the least bit convincing. Best I could do today, though. |
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| Sep-09-12 | | rilkefan: <<newzild>: Can anybody see the win after 34. Qxf3? Presumably Black plays 34...R8e3 35. Qf1> Here I had in mind to play ...Re4 36.Qh3 Bb6, which is crushing. Black's king is safe, while his rooks are supported by h5 and the bishop in the attack on white's king, and h4/g5 restrict the space of the crowded white pieces. And the queen isn't great at defending in this context. |
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Sep-09-12
 | | sevenseaman: May be 'Insane' but 2 minutes and (on a similar logic) I decide on 2 viable candidates, equally appealing; <30. Rxe4> and <30. f2> a) 30...Rxe4 and my Q looks safe on a/c of the looming 31...Rxe1+ . If; ai) 30...Rxe4 31. Rxg4 Rxe1+ 32. Rg1 Rfe8 33. Qf2 R1e2 34. Qg3 Bb6 35. 35. Rf1 R8e4 36. Qh3 Rg4  aii) 31. Rxg4 Rxe1+ 32. Rg1 Rfe8 33. Qf2 R1e2 34. Qg3 R8e4 and Q will not find a place after the threatened Rg4 (35. Qxf3 invites 35...Rh4+ and White Q will be lost).{ ] b) 30...f2,
bi) 31. Qxf2 Qh3+ 32. Qh2 Qf3+ 33. Rg2 Rxe4 bii) 31. Nxf2 Qd4 Ref1 Re2 33.Rg2 Re8 with 34...Bb6 to follow. White looks overwhelmed. Both lines seem to bring the bacon home. Instinctively I prefer the 30...Rxe4 line. Both lines are prolific in variations. These will take some hard work that I will postpone to after seeing the score. |
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| Sep-09-12 | | fokers13: Saw the doubling of the rooks as well as Bb6 idea,was unusually easy for a sunday. |
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| Sep-09-12 | | sfm: As often before, the first move(s) is easy to guess.
The rest was hard. Realizing that black still wins without the f-pawn took me some time. As on 34.Qxf3,R8e3 35.Qf1 white can only move Q-side pawns without losing the Queen for a rook, or being mated. A very rare and classic-looking zugzwang-like situation with so many pieces still on the board. Black can sadistically play 35.-,Be7 and wait for White to run out of moves. Of course it is not real zugzwang, as White loses anyway. Bd8-b6-d4-e5 and White must convert his material advantage to a piece less. Cutting to the bone, this one is genuine mutual zugzwang. White to move must accept a draw with e.g. QxR, but Black to move loses.
click for larger view |
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| Sep-09-12 | | Prosperus: 30. ... Rxe4 31. Rxg4 Rxe1+ 32. Rg1 Re2!? |
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| Sep-09-12 | | goodevans: <An Englishman: ... Maybe a little too easy for Sunday> Indeed. I got it much quicker than yesterday's. That's the first 7/7 for me for months. :) |
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Sep-09-12
 | | morfishine: <30...Rxe4 31.Rxg4 Rxe1+> forces the only move for White to retain his
Queen <32.Rg1>
Here, I had 3 candidates for Black move 32: Re2/Re5 & Rfe8 but couldn't
find a decisive continuation for any of these, so figured I missed the line
entirely
========
After seeing the finish, its astonishing the way Blacks pawn on <f3>
sits there immune from capture. Its an open question as to which part
of this sequence is more insane: The Queen sac or the pawn on <f3>? |
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| Sep-09-12 | | Eurotrash: I got the first move, so I take full credit. |
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| Sep-09-12 | | sfm: Oops! In my diagram Black to move holds with Re7. OK, let's add a black traitor-pawn on h7. |
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Sep-09-12
 | | paulalbert: Got to 32Rg1 but did not see all the follow up by black to make that line work. I need both more imagination and better calculating vision! |
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Sep-09-12
 | | Memethecat: 30...Rxe4 31.Rxg4 Rxe1+ 32.Rg1 Rfe8 33.Qg3 Bb6 (33.Qxd6 f2 34.Rf1 ??? )34.Rxe1 Rxe1+ 35.Kh2 f2 white has to give up the Q for the pawn ==========
I gave up at this point because stuff needs doing, but even if I'd continued later I doubt I'd of seen 33...R1e2 threatening to trap the Q with 34...R8e3, nice puzzle. |
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| Sep-09-12 | | cyclon: Relatively quiet 30. -Qf5 made me doubt the "insanity" of this puzzle, because on, for example 31. Nxd6 f2, or 31. Ng3 Qf4 keeping the bind and 31. Nf2 Bb6 with the clear edge. Also 31. Qc2 f2. Maybe I'm missing something here. In the "spirit" of the Sunday's puzzle would be something like 30. -Rxe4 30. Rxg4 (what else?) -Rxe1+ 32. Rg1 Re2 <( -Rfe8 33. Qxd6 [ or maybe even 33. Qg3/f2 ] doesn't quite impress me E-N-O-U-G-H )> 33. Qxd6 and without going into too far fetched analysis, I'm not quite sure about Black's position here in the sense that how he wins the game. Neither there's win in 30. -f2 31. Qxf2. Either I'm wrong, or then I'm missing some some real brilliancy. It would be nice to know how someone rescinds quiet 30. -Qf5. |
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| Sep-09-12 | | Funicular: Like most of you, i saw clearly through 32. Rfe8. It makes sense, since a check would win the queen. After that, it's about thinking how the bishop can kick in anc combine the rooks for an advantage. By the way, if Qxf3, then Bb6 and then R8e3 or something. Note how the queen is tied to defensive tasks and the black rooks dominate the 7th rank. And like most of you, i think the same thing, it's rather easy for a sunday. There's some forcing moves in all lines, since the king is exposed. You usually expect sunday puzzles to include deep positional moves which only become clear after 3 or 4 moves, when their real power kicks in. |
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sac: 30...Rxe4