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Jun-12-08 | | natrix75: While i'm at it is move 17. Bxh7+ that "greek gift" i've heard about? It seemed takeable even with the knight check coming can someone tell me why it would be bad to take? |
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Jun-12-08 | | JG27Pyth: Got the puzzle, but Al Wazir's solution gets the exclamation point. Bg8! Rapier sharp... by comparision the game's solution is thick-ankled and thuggish. |
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Jun-12-08
 | | ganstaman: <natrix75: While i'm at it is move 17. Bxh7+ that "greek gift" i've heard about? It seemed takeable even with the knight check coming can someone tell me why it would be bad to take?> Yes. Without doing much analysis on my own, here's the typical idea of such a sacrifice: 17. Bxh7+ Kxh7 18. Nxg5+ and then if
A) 18...Kg8 19. Qh5 and trying to prevent Qh7+/Qh8# may be impossible. B) 18...Kg6 19. Qg3 setting up a killer discovered check. |
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Jun-12-08 | | Jolly Wally: Several solutions here. I went for 20. Qxf7+ Nxf7 21. Ng6+ Ke8 22. Bg8! with mate to follow, simply because none of black's adjacent peices can be moved to save his king! (glad to see others also suggested this line) |
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Jun-12-08 | | DWINS: <dzechiel,At first I wanted to play 20 Qxf7+...> Your first instinct was correct. 20.Qxf7+ transposes to the game continuation after 20...Nxf7 21.Ng6+ Ke8 22.Bg8 forcing mate. How is your son doing? I am a diagnostic medical sonographer in Phoenix and have scanned many people with cholelithiasis where the stone is lodged in the common bile duct. It is fairly common, unfortunately. I hope he tolerated the surgery well and is on the way to a complete recovery. |
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Jun-12-08 | | dzechiel: <DWINS: How is your son doing? I am a diagnostic medical sonographer in Phoenix and have scanned many people with cholelithiasis where the stone is lodged in the common bile duct> I expect he will come home on Thursday, making a full and complete recovery. If you want the long version of the story (and it's really long), send me an e-mail. Thanks very much for your concern, Dave Zechiel |
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Jun-12-08
 | | Morten: My solution was 19. Qxf7+; Nxf7 20. Ng6+; Ke8 21. Bg8 and mate next move by either Bxf7 or Rf8. I like the "quiet" move Bg8. |
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Jun-12-08 | | paulsss: did not take long to get this one queen sac |
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Jun-12-08 | | Chaoticmaster: this one is not that hard to find solved it in 10 sec. |
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Jun-12-08 | | aldehyde: got it........
was a cool thursday puzzle to crack |
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Jun-12-08 | | openingspecialist: i think it was a bit easy for a thursday |
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Jun-12-08 | | stacase: Removing the support of the black Knight at d6 was important. The Queen sac did the job. Comments were a fun read this morning. |
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Jun-12-08 | | ravel5184: I found the mate in fifteen seconds. 20. Ng6+ is a very easy move to see. This should be a Tuesday puzzle instead. (P.S. I didn't get the Tuesday puzzle!) Also see User: ravel5184 - I have some new chess puzzles up! |
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Jun-12-08 | | eblunt: Damn missed it. I went for 20 ♘e4 overloading the ♘ protecting f7. Seems to allow the correct answer afterwards anyhow .... |
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Jun-12-08 | | vangogh228: I came up with a different solution that, though one move longer, appears to me to have equal strength in the end. Any comments/analysis is greatly appreciated.
20. Ng6+ Ke8
21. Bg8 Nf5 (only way to stop Bxf7)
22. Qc5 Qd6
23. Qxd6 Nxd6
24. Rxf7 Nxf7
25. Rf1 and mate is inevitable. There's no way to protect the f7 Knight from capture. If Black moves the Knight, then Rf8#. If he doesn't, Bxf7#.If 22. ... Nce7
Then
23. Qxe7+ Nxe7
24. Bxf7#
If 22. ... Nd6
Then
23. Bxf7+ Nxf7
24. Qf8#
I think all Black's moves are forced to prolong the game. Like I said, any comments are welcome! You know, I think I might even give myself an "!" for move 22. |
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Jun-12-08
 | | johnlspouge: Thursday (Medium): White to play and win.
Material: Even. White has a battery Rf1 and Qf2 pinning Pf7 to Kf8. The Re1 also has an open file. The White Bh7 takes the square g8 away from Kf8, and the White Nh4 can give check Ng6+. The only even relatively inactive White piece is Nc3. The Black pieces on the Q-side are awkwardly bunched for defense of Kf8, with only Nd3 contributing by protecting Pf7. Candidates (20.): Ng6+
20.Ng6+ Ke8 21.Qxf7+ Nxf7 22.Rxf7 (threatening 23.Rf8#) The Rf7 is untouchable, because of
22…Kxf7 23.Rf1+ Ke8 24.Rf8#
Neither Rd8 nor Bd7 can move to give Ke8 a flight square, so to prevent mate at f8, Black must play 22…Qd6 23.Ref1 (threatening 24.Rf8+ Qxf8 25.Rf8#)
and despite the logjam of pieces on the Q-side, Black is pathetically helpless to prevent mate. The mate is an Arabian mate in the center of the board! Here are <two> Arabian mate links http://chess.about.com/library/week...
http://www.chessforchildren.com/Ara... My chess forum http://home.comcast.net/~johnlspoug... lists other named mates. |
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Jun-12-08
 | | johnlspouge: <al wazir>'s mate with Bg8 has a deft, delicate touch to it. Naturally, I preferred to blunder in with all Rs blazing ;>O |
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Jun-12-08 | | goodevans: Having missed the best solution yesterday (I chose one of the many slower wins) I got this really quickly today including <al wazir>'s quicker and more elegant 22 Bg8. |
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Jun-12-08 | | sambo: I saw 20 Ng6+ Ke8 21. Bg8 without the queen sac. It still looks good to me; is this a valid solution? After any move except Nf5 the continuation is 22. Bxf7+ Nxf7 23. Qxf7#; if 21...Nf5 then 22. Qc5 wins, threatening 23. Qf8# or if the knight moves back 23. Bxf7+ Nxf7 24. Qf8# |
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Jun-12-08 | | griga262: I saw the first move easily, but then I went with 21.Nh8. If this doesn't work, can anyone explain why? |
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Jun-12-08 | | hedgeh0g: I went for 22. Bg8 instead of Rxf7. It gets the job done. |
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Jun-12-08
 | | kevin86: I tried the "noisy" way with the queen sac at f7,but gave it up-not thinking that it leads to mate. Instead,I went for the quiet Ne4 but I guess the reply of f5 would gum up the works. I saw that without the pawn on a6-that white has the winning move of Nb5 (of course,even in this case,the text is far superior.) |
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Jun-12-08 | | zanza: Got it! |
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Jun-12-08
 | | Once: Beautiful!
I found the same line as <al wazir>, by chance as the first line that I looked at. 19. Ng6+ demands to be considered. It exploits the pinned g pawn, shoves an attacking knight up the board (most great combinations rely on a far advanced knight) and it owns two of the squares around the black king (f8 and e7). 19. ... Ke8 is forced. Now we have a stalemated black king, and the rule for stalemated kings is to check, check, check until dead. The check has to come on f7, so let's try 20. Qxf7+ Nxf7 (forced). Now we need another check on f7, so let's look at Bg8. The knight cannot be defended, so we are home free. No, wait, the knight can dodge out of the way and still defend f7 from its new post. Ah, that's okay we have 21. Rf8 mate. You have got to love the plight of the black bishop on d7. Black would dearly love to move it, either to defend f7 or to allow the queen to defend along the seventh rank. But it is totally hemmed in by its own pieces on all four compass points. Is the theme of this week - combinations that lead to classic mates? |
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Jun-12-08 | | eblunt: < kevin86: I tried the "noisy" way with the queen sac at f7,but gave it up-not thinking that it leads to mate. Instead,I went for the quiet Ne4 but I guess the reply of f5 would gum up the works > 20 Ne4 f5 21 gxe5 ep. and it's not pretty for black. IMO Black's best reply is 21 ... Ke7 (or else loses the d6 Knight) but it goes downhill pretty quickly after that. I think e4 is winning, but much more slowly. |
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