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Sk Nasir Ahmed vs Ziaur Rahman
Bangladesh Championship (2006), Dhaka BAN, rd 5, Mar-14
Sicilian Defense: Paulsen Variation (B46)  ·  0-1
ANALYSIS [x]

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sac: 26...Rh1+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 4 ·  Later Kibitzing>
May-29-07  ounos: <Richerby>, <boprael>, thanks, I couldn't make sense out of the comments! :-)
May-29-07  realbrob: I got 26..Rh1+, but White chose the "easier" win for White (27.Kxh1 Qxh3+ and forced mate in 1 move). It was more difficult to spot 27.Kg3 Qg4+ 28.hxg4 h4#.

Sometimes I wonder why a strong player doesn't resign rather than playing a move like 27.Kxh1 which leads to forced mate in 2..

May-29-07  nimzo knight: If white has an extra rook. There is no puzzle at all ;)
May-29-07
Premium Chessgames Member
  Gilmoy: <TrueBlue:> We feel your pain. I had help -- I won a game once (blitz-ish on pogo) with a similar long pin and Q "sac" (not really, since his g-pawn was pinned), so that pattern leaps out at me now. Winning by Q sac, even a faux one, tends to be a great mnemonic device :)

As I recall, I blundered an R to his Bish^H^H^H^Hbrilliantly sacked the exchange to steal the long diagonal from him. Soon thereafter, with his K helpfully on h1, I saw the cute Qh3 faux sac. My killer move was first Bd6! to surreptitiously double on h2 -- he remained blissfully unaware. When I uncorked the Q move, his scalp crawled north twice: (1) I'm so pinned (2) I can't even defend h2. There followed Kg1[] Qxh2+ and a swift 1-square king hunt (or is that redundant?)

Another lesson I took from that game: Fight back, nobody ever won a game yadda yadda. Bril(ahem)liant!

May-29-07
Premium Chessgames Member
  YouRang: Okay, I found 26...Rh1+ right away, and if 27. Kxh1? then 27...Qxh3+ & Qxg2#.

So, I expected white to play 27. Kg3, and I spent the longest time trying to figure what to do next. I was just about to punt when, as a last gasp, I looked at the queen's only check: 27...Qg4+!!. Of course then 28. hxg4 h4#!

Very pretty combination - tricky for a Tuesday though.

May-29-07  Crowaholic: I saw ..Rh1+ Kxh1 ..Qxh3+ and mate quickly but didn't find ..Qg4+!! after White declines the sac. This sort of pin in mating attacks is essential, I've only studied 6 games from Kasparov's My Great Predecessors by now but these pins seem quite common in high level play, at least as a latent threat. Anyway, I considered ..h4+ after Kg3 but that's not much use without the additional rook on the 8th (the score and diagram were already corrected). ..Qg4+ hxg4 ..h4# is a very nice finish, though.
May-29-07  siu02jm: yourang <27...Qg4+!!. Of course then 28. hxg4 h4#!> hey thats what i have been missing.
May-29-07  Duque Roquero: <Sometimes I wonder why a strong player doesn't resign rather than playing a move like 27.Kxh1 which leads to forced mate in 2..> 27. ♔g3 leads to forced mate in 2 as well.
May-29-07
Premium Chessgames Member
  kevin86: I think I see a flaw in one of the variations: 27 ♔g3 ♕xh3+ 28 gxh3 h4+ is nOT mate because of ♔g4 How does black win?
May-29-07  Crowaholic: A missed opportunity for a similiar and very interesting (quality) sacrifice was discovered by user Shams in S Kriventsov vs J Shahade, 2003.

<kevin86: I think I see a flaw in one of the variations>

I tried that line too but nothing came of it. The trick is that Black plays 27. ..Qg4+, not ..Qxh3+. Now after 28. hxg4 (only move) h4#, there is no 29. Kg4 because g4 is blocked by a friendly pawn.

May-29-07  goodevans: <Duque Roquero: 27. Kg3 leads to forced mate in 2 as well.> Yeah, but not as obvious as for 27 Kxh1 so I think 27 Kg3 might have been worth a punt for white. After all, if Kramnik can overlook a simple mate in 1 (vs. Deep Fritz) then lesser mortals are capable of missing more complex ones.
May-29-07
Premium Chessgames Member
  playground player: Very obliging of Black to play Kxh1! Wish my opponents would make moves like that. Kg3 gave me tons of trouble. I did not find Qg4+ leading to mate; but what's wrong with Qg6?
May-29-07  waddayaplay: I completely missed it, instead trying to get Qxh3 to work.
May-29-07  siu02jm: <kevin86: I think I see a flaw in one of the variations: 27 Kg3 Qxh3+ 28 gxh3 h4+ is nOT mate because of Kg4 How does black win?> not 27..Qh3, the key is Qg4!!
May-29-07  siu02jm: <goodevans: <Duque Roquero: 27. Kg3 leads to forced mate in 2 as well.> Yeah, but not as obvious as for 27 Kxh1 so I think 27 Kg3 might have been worth a punt for white. After all, if Kramnik can overlook a simple mate in 1 (vs. Deep Fritz) then lesser mortals are capable of missing more complex ones.>

Same here, I ruled out Kxh1 as immediately losing. You are right there is something serene about Qg4+ eventhough its a mate in 2. Could be argued that the opponent didn't want the black to have a flashy finish. Imagine if one regigns in the middle of 'immortal game'.

May-29-07  LIFE Master AJ: I was going to say that this was way too dificult for a Tuesday puzzle, but the official CG post (see above) already covered that.
May-29-07  LIFE Master AJ: "Problem of The Day" (POTD)
Tuesday; May 29th, 2007.
(Corrected gamescore.)


click for larger view

White: Kh2, Qc5, Be3, Rb6; pawns - a2, c2, c4, f2, g2, & h3. Black: Kf7, Qe6, Bb7, Rd1; pawns - a6, e5, f6, g7, & h5.

Black to move. (26... ???)

May-29-07  Kleve: Yeah... I saw Rh1+, an easy enough mating pattern if Kxh1. But I couldn't find the winning line after Kh3 for the life of me!

Qg4+!! Fantastic. Thanks for your analysis, all!

May-29-07  schnarre: Rh1+ was obvious enough, though Qg4+! took longer. A nice finish!
May-29-07  Tactic101: Seen this sort of puzzle before, so the answer came instantly.
May-29-07  iceman77: The bishop on b7 prevented the pawn to take on the queen on h3. A fairly easy one but one can totally miss it.
May-29-07  Fezzik: Now that the game score has been corrected, 27...Qg4! (after 27.Kg3!) is not only the prettiest way to win, but the only way to mate!

The corrected puzzle is hard enough to warrant a Thursday slot, but I was happy enough to see it today. Maybe this week will be full of tough puzzles!

May-29-07
Premium Chessgames Member
  Beancounter: Did the editor wake up with a toothache this morning? This is a tuesday!!
May-29-07
Premium Chessgames Member
  fm avari viraf: Ziaur Rahman, the first GM of Bangladesh, finishes off with one of the prettiest combinations. Here, he first sacrifices his Rook & when grabbed White is mated in two & if the White King moves to g3 then the stunning Queen sac comes 27...Qg4+ 28.hxg4 h4#
May-29-07
Premium Chessgames Member
  patzer2: The daily puzzle solution 26...Rh1! is a decoy which allows the Black Queen to exploit the pin and force mate-in-three after 27. Kxh1 Qxh3+ 28. Kg1 Qxg2#.
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