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| Jul-15-11 | | think: Well, I rarely get Friday puzzles, but I nailed this one. Saw the played line up until move 22, where I assumed White had won. I'm surprised such an exciting game as this one has no comments yet! |
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Jul-15-11
 | | LIFE Master AJ: I went with 20.Rf7, although I don't think Black sould take the WQ. |
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Jul-15-11
 | | Phony Benoni: 
click for larger view
<20.?>
Black's up a pawn, but his rook is a tempo away and White has a lot of pieces floating around the kingside. The ♘e6 stirs thoughts of 20.Bxh6 Bxh6 21.Qxh6+ Kxh6 22.Rh4#, but the rook needs to be lifted before that can happen. Besides, Black doesn't have to take the bishop,he can... At this point, I noticed the White queen was attacked. Nothing to worry about: 20.Bxh6 Nxd2 21.Bxg7 followed by 22.Rf7 ... oh, wait, that confounded knight takes the rook first! But we have 21...Nxd4 22.Bxg7 Nxf4 23.Nxe4 threatening mate ... but White has invested too much material, and Black can just play ...Qxe6 if nothing else to emerge up the exchange. Still trying to be brilliant: how about 20.Qd4 Bxd4 21.Rf7+ Kh8 22.Bxd4+ and ... 22...Ne5 stops White dead. Again some attack remains, but certainly not enough to compensate. So I finally decided that <20.Rf7> first was the way to go: 20...Nxd2 21.Rxg7+ Kh8 22.Bd4 with what seems a deadly discovery in the works. And that's what seems to have worked. So it's the old lesson about fooling around with the order of moves until you find one that clicks. The key, in a game, would be realizing this is the moment to strike, before Black can finish mobilizing. There's also the Principle of Desperation. Since quiet queen moves allow ...Nxe3 taking the steam out of any attack White might have, this is the moment to put a few extra brain cells to work and see if something spectacular is available. |
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| Jul-15-11 | | dzechiel: White to move (20?). Black is up a pawn. "Difficult." Well, my eye was first drawn to the possibility of
20 Rf7
Only then did I notice that the white queen was hanging, and I started looking around for moves that were a little more forcing. But after a lot of looking around, I think maybe my first idea was right after all. After 20...Nxd2 21 Rxg7+ Kh8 22 Bd4
Black has no good way to deal with the rook giving discovered check and white should also be able to pick off the black queen, depending on where she moves. This is all I got right now, time for me to check. |
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| Jul-15-11 | | rilkefan: Oops, went astray on move 22, lack of patience gets me again. |
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| Jul-15-11 | | cormier: what about 20...QxNe6 |
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| Jul-15-11 | | Quentinc: This being a puzzle, 20 Rf7 pretty much leapt right out, but I wasn't (and am still) not sure what's White's best after 20...Rg8. |
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| Jul-15-11 | | mario1031: Quentinc maybe after 20...Rg8 21Qd4? ... |
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| Jul-15-11 | | Quentinc: <Cormier>, White may have something more decisive, but 20...Qxe6 21.dxe6 Nxd2 22. Rxe7 Nc4 23. Bd4 Ne5 24. Rxc7 looks pretty good. |
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| Jul-15-11 | | Catfriend: <cormier> 20..Qxe6 21. dxe6 Nxd2 22. Rxe7 with victory due to the threats on d2 and Bd4. <mario1031> 20..Rg8 21. Qd4 is correct, but the line goes further: After 21..Ne5, White uses another feature of the position, one that distracted me at first - 22. Rxg7+ Rxg7 23. Nf8+ winning the queen. |
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| Jul-15-11 | | Quentinc: Mario 1031> I wanted to make 21.Qd4 Ne5 22. Bxh6 Kxh6 23.Qe4 work, but Black would play 22....Nxf7 instead. But perhaps 23. Bxg7 Nf5 24. Nxf5 gxf5 25. Qf6 still wins. |
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| Jul-15-11 | | Quentinc: <Catfriend>, good find in the 20..Rg8 line! |
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| Jul-15-11 | | BiteByBits: so was thinking it has to be Rf7 threatening Rxg7 or Qd4 (if Bxd4 we can threaten Rf7+) |
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| Jul-15-11 | | ajile: Got it.
The black rook at the end is a dead duck no matter what. If 26..Kh8 White can play the amusing discovery again and eat all Black's q-side pawns until he reaches Rxa7+ winning the rook. And if Black plays 26..Kf8 then 27.e7+ forces 27..Ke8 after which 28.Rg8+ wins the rook on a8 as well. |
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| Jul-15-11 | | rhickma4: It looks like the theme here is for White to create a windmill around g7.
But what is the best way to go about it.
There seem to be 2 options 20.Rf7 and 20.Qd4, but the latter is easily shown to be flawed.20.Rf7 Nxd2 21.Rxf7+ Kh8 22.Bd4
Now White threates 23.Rxe7+ and 24.Rxd7, ending two pieces up. Black cannot directly block the discovered check. Can he hide the Q?
22...Qa5 23.Rxe7+ Qxd4 (or else W will chomp all the Queenside pawns, and eventually the Q)
24.Nxd4 and W is a clear piece ahead.
Moving the Q to the bank rank also fails to the windmill.
So Black must find a way to block or capture the B
22...Bf4 23.Rxe7+ Ne5 24.Bxe5+ dxe5 25.Rxd7 and again White is 2 pieces ahead 22...Nc6 23.Rd7+ Nxd4 24.Nxd4 and W has one a piece, and 22...Nf5 23.Rd7+ follows the same line. I think this must be it. |
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Jul-15-11
 | | An Englishman: Good Evening: I feel you have to see the first three moves if Black accepts the sacrifice to claim full credit, and this is a curious combination; it starts with a passive sacrifice of an entire Queen, and finishes with a quiet Bishop move. However, declining the sacrifice is tougher to beat. The best I could find was 20...Rg8; 21.Qd4 with crushing pressure. |
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Jul-15-11
 | | scormus: Had a bit of luck here. Saw 20 Rf7 and all the possibilities fitted into place. So easy, then saw the WQ was en pris, thought about it and realised it didnt matter. Perhaps if I'd seen the Q en pris at the start I might not have considered Rf7 Could B have done better by not immediately taking the Q? I cant find anything that helps much eg. 20 ... Qxe6 21 dxe6 Nxd2 22 Rxc7 Nc4 23 Bd4 |
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| Jul-15-11 | | RobertLangdon: <Quentinc: <Cormier>, White may have something more decisive, but 20...Qxe6 21.dxe6 Nxd2 22. Rxe7 Nc4 23. Bd4 Ne5 24. Rxc7 looks pretty good.>In this line I also saw 23... Rg8 24. Nxe4 g5 25.
Bxg7 Rxg7 26. Nf6+ Kg6 27. Rxg7+ Kxg7 28. e7 and wins. |
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Jul-15-11
 | | piltdown man: Saw the first move, but the follow up was difficult. |
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| Jul-15-11 | | rilkefan: Where does black go astray here? Maybe on move 10 ...Nh5 or Bxf3 would be better? No, scratch Nh5. The opening explorer suggests ...Bd7 and the more interesting ...b5. |
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| Jul-15-11 | | rilkefan: And I see Seirawan played into this line up through move 13 a few years later so I guess it can't be that bad:
Timman vs Seirawan, 1981 |
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| Jul-15-11 | | mike1: saw the game before which made me wonder about 20 Rf7 Qxe6.
21.dxe6 Nxd2 22. Bxd2 Nd5.
Any clear wins in this line?
23. c4 e3 24. Be1 Nf6 is not convincing. |
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| Jul-15-11 | | morfishine: Went with 20.Rf7 Nxd2 21.Rxg7+ Kh8 22.Bd4 figuring 22...Qxe6 23.Rxe7+ However, 23.dxe6 is much better, so I can only take pleasure in starting on the right line. A pointed finish: Blacks rook is lost |
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| Jul-15-11 | | goodevans: 20 Rf7 seemed to me to be the only promising move so it was just a case of staying with it until the solution was worked out. Part of the luxury of knowing it's a puzzle! |
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| Jul-15-11 | | abuzic: 19...Nc4? 20. Rf7!
If 20...Rg8 then 21. Qd4, and now only 21...Ne5, ...Kh8, ...Nf5 or ...Qxe6 can avoid immediate #. - 21...Ne5 22. Rxg7+ Rxg7 23. Nf8+ and 24. Nxd7
- 21...Kh8 22. Rxg7 Ne5 (22...Qxe6 23. Rxg8+ Kxg8 24. dxe6) 23. Bxh6 Rxg7 24. Bxg7+ Kg8 (24...Kh7 25. Nf8+ and 26. Nxd7) 25. Bxe5...etc.
- 21...Nf5 22. Rxd7 Nxd4 23. Bxd4...etc.
- 21...Qxe6 22. dxe6 |
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Kibitzing
sac: 20.Rf7