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Jun-26-11
 | | bright1: Wednesday puzzle with White to play and win on move 30. |
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| Dec-02-11 | | IRONCASTLEVINAY: Easy one |
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| Dec-02-11 | | think: I was very close, but had 32. Be6. It's less forcing, but I think it still wins. Is there anything wrong with it? |
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Dec-02-11
 | | Phony Benoni: After fooling around with bishop sacrifices on h7 and g6, 30.Qg6 popped into my head as a possibility. Of course, Black could simply consider 30...Rxf5 conceding the exchange, but if the queen is taken there are possibilities: 30...hxg6 31.hxg6+ Kg8, and now I was looking at 32.Be6:
click for larger viewThis also seems to force mate but allows Black a few spite checks. Zawadzka's line is cleaner. |
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| Dec-02-11 | | rhickma4: The double discovered check idea makes this fairly easy to see.
You just need to work out the Black can't wiggle his way out. The main line is:
30.Qg6 hxg6 31.hxg6+ Kg8 32.gxf7+ Kxf7 33.Be6+ Ke7 (3...Kg6 Bf7#) 34.Bg5# With the White Q hanging, does Black have any interference moves. 30...Rxf5 31.Qxe8 looks to be winning for White
30...Na3+ or 30...Nd2+ only delay the main line, so I think this is the solution. |
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Dec-02-11
 | | Jimfromprovidence: After 30 Qg6 if 30... Rxf5 follows, then comes 31 Qxe8 Qxd5, and black's back rank weakness is fully exposed.
click for larger view Now in workmanlike fashion, white wins after 32 Qxf8+ Rxf8 33 Rxf8+ Qg8 Rxg8+ Kxg8. 
click for larger view |
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| Dec-02-11 | | dzechiel: White to move (30?). Material even. "Difficult."
I looked at this one for some time, trying to make 30 Bg6 work. It just wouldn't happen for me. Finally I considered something different... 30 Qg6
This threatens 31 Qxh7# and cannot be ignored. Black has two tries here: - 30...Rxf5
- 30...hxg6
First things first.
30...Rxh5 31 Qxe8
Not only does this pick up an exchange, but the threat now is 32 Qxf8+ Rxf8 33 Rxf8#, mate. 31...Rxf1 32 Rxf1
Black is still down the exchange, and the bishop will fall next move, with black facing imminent checkmate. Perhaps it would be better to take the queen...
30...hxg6 31 hxg6+ Kg8
The only move.
32 Be6
Pinning the rook and threatening both 33 Bxf7# and 33 gxf7#. Protecting the rook doesn't help, as after 32...Ne5 it's 33 Bxf7+ Nxf7 34 gxf7#. And 32...Be7 allows 33 Bxf7+ Kf8 34 Rh8#.
That should just about do it. Time to check. |
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| Dec-02-11 | | rilkefan: First thought is Qg6. Takes is forced, then pawn takes check, Kg8 box, and Be6 is double-check after gxf7+ Kxf7. Actually 32.Rh8+ Kxh8 33.gxf7 threatening Rh1# as well as fxe8=Q looks winning too if not mate next. |
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| Dec-02-11 | | sevenseaman: Equal. Black's Q is a bit hemmed in, but should I care? Bxh7 looks promising. 30. Bxh7 Kxh7 31. Qg6+ Kg8 32. Qxf7+ is how I'd like but Black has choices that cannot be ignored. First; he may not take the B at h7. White can then play Rxf7 and push h6. Second; after Kxh7 he could go to h8 losing the Rf7. Either way its not much to write home about. Ambiguity continues to prevail.  though. What I have been trying to do is to find a way to win the game. The position is <so loaded> that it looks the puzzle can be cracked with some elan, some spectacular move. The h1 R needs only the h5 P to get out of its way.
A very good brain wave has hit me unexpectedly! How about trying for a mate in 2, or something close to it. 30. Qg6. This <is> it. Black cannot swallow, nor can he breathe. He simply has to resign. Its not a mate in 2 though if he plays on. I am on a winning trail without doubt. <30. Qg6 hxg6 31. hxg6+ Kg8 32. gxf7+ Kxf7 33. Be6+ Ke7 34. Bg5#> (Careful, 34. Rf7+ allows K to escape to d8) 
click for larger viewor <33...Kg6 34. Bf7#> |
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| Dec-02-11 | | Dr. J: <rilkefan: ... Actually 32.Rh8+ Kxh8 33.gxf7 threatening Rh1# as well as fxe8=Q looks winning too if not mate next.> Sorry, no. 33...Rf1! 34 Rxf1 g6 refutes. |
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| Dec-02-11 | | rilkefan: Oops - stockfish tells me what I should have realized, that 32.Rh8+ Kxh8 33.gxf7 loses to ...Re1+ and ...g5. It also notes that hxg6 isn't forced - ...Rxf5 avoids mate. |
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| Dec-02-11 | | rilkefan: ... as does <Dr. J>. I'm a sucker for baroque flourishes. |
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| Dec-02-11 | | M.Hassan: "Difficult" White to play 30.?
Equal, but white has a Bishop for a Knight.
30.Bxh7 Kxh7
31.Qg6+ Kh8
32.Qxf7 Rc8
33.h6 gxh6
34.Bxh6 Bxh6
35.Rxh6#
Or in case the king declines taking Bishop:
30.Bxh7 Rxf1
31.Rxf1 Rc7
32.Bf5 Ne5
33.Qg5 Qc7
34.Be6 Qe7
And I am not sure if this line works
Time to check. I am doubtful if I have solved tonight's puzzle |
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| Dec-02-11 | | tacticalmonster: candidate: 30 Bxh7 and Qg6
a) 30 Bxh7 Rxf1 31 Qxf1 Kxh7 32 Qf7 Re7! 33 Qxf8 Qxd5 = b1) 30 Qg6 hxg6 31 hxg6+ Kg8 32 Be6 Be7 33 Bxf7+ Kf8 34 Rh8# b2) 30 Qg6 Rxf5 31 Qxe8 Qxd5 32 Qxf8+ Rxf8 33 Rxf8+ Qg8 34 Rhf1 |
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| Dec-02-11 | | raul555: A good one. I tried for 5 min and i was not able to solve. |
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| Dec-02-11 | | ajile: Ha got it. This position just begged a fancy move like 30.Qg6! |
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| Dec-02-11 | | sevenseaman: <rilkefan> Forget about what Stockfish tells. I think your first post here has a win hidden in it(somewhere). (I'll come back; feeling too snoozy, have to doze off a bit). <First thought is Qg6. Takes is forced, then pawn takes check, Kg8 box, and Be6 is double-check after gxf7+ Kxf7. Actually 32.Rh8+ Kxh8 33.gxf7 threatening Rh1# as well as fxe8=Q looks winning too if not mate next.> |
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| Dec-02-11 | | thegoldenband: It's interesting how different people's minds work. I saw the Qg6 idea almost instantly -- like, within 5-7 seconds -- and almost expected it to be a spoiler since it seemed too obvious. I'm totally surprised to read how other, stronger Chessgames.com members didn't have the same reaction, but were drawn to other ideas first. I wonder what the difference in thought process is? |
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| Dec-02-11 | | alshatranji: I thought of something much more fanciful. 32. Rh8+ Kxh8 33. gxf7 (threatening Rh1# and fxe8=Q). Now I can see it can be refuted with the beautiful 33... Re1. Well, too bad. |
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| Dec-02-11 | | Quentinc: <thegoldenband,> I had the exact same reaction. Honestly, I think it's hit or miss to a large extent. I can't see any pattern to the ones I find really easy, and then the ones I struggle with that everyone else seems to find easy. |
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| Dec-02-11 | | redmaninaustin: I had 32.Rh8+ Kxh8 33.gxf7 threatening both fxe8(Q) and Rh1 mate. Is this also a winning line? |
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| Dec-02-11 | | whiteshark: <30.Qg6> aka <Alekhine's block> http://www.amazon.com/Alekhines-Blo... Recommended: Game Collection: Alekhine's Block |
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Dec-02-11
 | | LIFE Master AJ: First of all, I was drawn to 30.Qg6!! almost instantly. Secondly, after just a few minutes, I rejected it, it seemed to run out of gas, as I was not capturing the Rook on f7, but trying to mate instead. Third - I tried a bunch of other things ... nothing came close to being really promising. Fourth - I looked at the clock and realized that over 35+ minutes had flown by, it seemed like just a handful of minutes ... so (by my own limitation), time forfeit. Then I came back to 30.Qg6. It was then that I tried, 30.Qg6, hxg6; (This seems forced, to prevent the mate on h7.) 31.hxg6+, Kg8; 32.gxf7+! (finally, I actually examine this capture in detail) 32...KxP/f7; (This also seems forced, otherwise White captures on e8 and makes a new Queen ...) 33.Be6+!, Ke7; 34.Bg5#. I think that this has to be it, time to check ... |
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Dec-02-11
| | LIFE Master AJ: OK, I did not seriously think about the King going to g6, but not surprised it was easily dealt with. (Too much firepower pointed at the Black King, the second player's army are just idle spectators ...) |
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Dec-02-11
 | | HeMateMe: Not dfficult. Parking a Queen on g6 (when there is a Rook on a1) is a common enough motif, to open up the a file. |
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sac: 30.Qg6