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Oct-12-06
 | | al wazir: <Vanish Doom>: After 27...Rxe1+ 28. Rxe1 Qe5! 29. Ne3 black has 29...f5. |
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Oct-12-06
 | | An Englishman: Good Morning: 28.Rf1,Rxf1+; 29.Kxf1,Rc1+; 30.Ke2,Re1+; 31.Kf3,Qxe4+; 32.Qxe4,Rxe4; 33.Kxe4,gxf5+ is the best I can find for White. |
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| Oct-12-06 | | Confuse: its interesting how putting ur pieces directly where they "shouldnt be" usually ends up as the best position! nice one by shirov. |
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| Oct-12-06 | | DWINS: It's interesting to note that Shirov had to play 28...Kg7 or else the combination not only wouldn't work, but he would end up being mated! If 28...Kh8 29.Qe2 Rxe1+ 30.Qxe1 Qxe4 31.Qa1+ is all she wrote. |
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| Oct-12-06 | | jahhaj: Saw 27...Qb4 almost immediately but never saw 30...Qxe4. Eventually decided on 27...Qb4 since I couldn't see anything better and it seemed to get Black out of trouble at least. So is that at hit or a miss? A miss I guess. |
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| Oct-12-06 | | eaglewing: <Vanish Doom> and <An Englishman>: Rf1 seems to be an interesting defense idea. However, like <An Englishman> line shows, it needs to be improved by 28. Nxe7+ Kg7 first, then gxNf5 in his line is not possible and we need something better for a convincing Black win. Any ideas? I don't see easy Black improvement in that case. |
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Oct-12-06
 | | Honza Cervenka: Nice shot based on weak back rank and pin. |
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| Oct-12-06 | | Aristarch: Easy for a Thursday - saw the entire combination in less than half a minute. I guess I was just lucky. |
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| Oct-12-06 | | thorndeux: <eaglewing> That's a very good idea. So the question is, if we can find a better move after
27...♕b4
28.♘xe7+ ♔g7
29.♖f1
I think the best try is still:
29...♖xf1+
30.♔xf1 ♖c1+
31.♔e2 ♖e1+
when the position looks like this:
click for larger viewNow the intuitive 32.♔f3 loses to 32...♕c3+:
1)33.♖e3 ♖xe3+ 34.fxe3 ♕f6+ picking up the knight;
2)33.♔f4 ♘xd5+ 34.♘xd5 (34.♔g5 ♕f6#)♖xe4+ 35.♔xe4 f5+ 36.♕xf5 ♕c2+ winning the queen for a knight. It seems better for White to move 32.♔d3, as after 32...♕xb3+ both possible moves (33.♔d2 and 33.♔d4) seem to hold for Black. Do you have any ideas how to win after 32.Kd3? |
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| Oct-12-06 | | eaglewing: <thorndeux> Not 33.Kd4. 32. Kd3 Qxb3+ 33. Kd4 Qc4+ 34. Ke5 f6
and now Kd6/e6/f4 allows Qxe4. |
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| Oct-12-06 | | cjhasbrouck: I overlooked one branch of the line but overall I feel I solved the puzzle, because I got Qb4 pretty easily and in an actual game, I would have been lucky enough to have that overlooked branch still be a winning one. One of the few Thursday puzzles I have solved in less than 10 minutes. |
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| Oct-12-06 | | NBZ: <thorndeux> Kd2 Rxe4 Qxe4 Nc4+ and now:
1) Kc1 Qb2+ Kd1 Qd2#
2) Ke1 Qc3+ Ke2 (if Kf1 Nd2+; if Kd1 Qd2#) Qb2+! and black is lost (Kf3 Nd2+; Kf1 Nd2+; Ke1 Qd2+ Kf1 Qd1+ Qe1 Nd2+; Kd3 Qd2#)
3) Ke2 Qb2+ transposes to line 2)
So it appears Kd2 loses too.
Anything I missed? |
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Oct-12-06
 | | gawain: I am so pleased with myself! Somehow I saw the ...Qb4 deflection right away. Only because I knew there was a puzzle-type solution though. Never would have seen this over the board. Kibitzers have pointed out some interesting wrinkles after 29 Rf1. Thanks! |
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| Oct-12-06 | | RandomVisitor: 1: Pedzich Dominik (POL) - Shirov Alexei (LAT), Ch World (juniors) 1990
click for larger viewAnalysis by Rybka 2.1o mp: 20-ply
1.  (-1.63): 27...Qb4 28.Kf1 Rxe1+ 29.Rxe1 Qxg4 30.Nh6+ Kg7 31.Nxg4 Nxd5 32.Rd1 Rc5 33.g3 a6 34.Kg2 2. ยต (-1.37): 27...Rxe1+ 28.Rxe1 Qd7 29.Nh6+ Kf8 30.Qf4 f6 31.h3 Nxd5 32.Qd4 e5 33.Qd2 Qc6 34.Ng4 (, 12.10.2006)
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| Oct-12-06 | | Castle In The Sky: Got it-beautiful fork-this is fork week. |
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| Oct-12-06 | | YouRang: Yay! Once you spot white's back rank weakness, the tactical possibilities appear! Add to this that black's queen is under attack (giving a little hint that the key move is a queen move), and 27...Qb4! is pretty obvious. I didn't look at the intervening knight move, but I did see how Black would win after Qe2. |
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| Oct-12-06 | | thorndeux: <eaglewing><NBZ> You are both right. Cool. That means that 29.Rf1 loses by force. 32.Kd3 looked as though it couldn't work, I just didn't see how. <NBZ> I saw the 33.Kd2 line up to 34...Nc4+ 35.Ke2 but missed the fork after 36.Kf3 - shows once again: queen and knight work together very well against a king. <eaglewing> I totally missed 33...Qc4+ and thought Black's only try was 33...Rd1+ instead. |
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| Oct-12-06 | | YouRang: <RandomVisitor> Thanks for pointing out White's defense using the knight fork to recover the queen! I completely missed that. Still, Black is up by 2 pawns going into the endgame - should be a clear win. |
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| Oct-12-06 | | kevin86: To me,following the recent puzzles on overworked pieces and on threat themes,Qb4 is almost reflex. It was just a minute or two to check out possible foils. Today,the back-row mate threats combine with the overworking of white's rook and later,the queen. |
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| Oct-12-06 | | talfan: Shirov magic!
simple but still beautiful |
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| Oct-12-06 | | CheckWhat: What would black do if white 28.Kf1. How would black respond? The way I see it it moves on to a longer end game which I can still see black winning, but atleast this gives a chance to white. |
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| Oct-12-06 | | Simplification: <CheckWhat 28 Kf1> This looks to be the best move for white: 28 ... Rxe1 29 Rxe1 Qxg4 (the rook was pinned) ... but 30 Nh6+ Kg7 31 Nxg4 recovers the Queen. However, after 31 ... Nxd5 black is up two pawns. |
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| Oct-12-06 | | zb2cr: Saw it after about 1 minute of thought. |
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| Oct-12-06 | | Trouble: I'm actually very proud of myself for getting this one. |
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| Oct-12-06 | | RandomVisitor: 27-ply:
1: Pedzich Dominik (POL) - Shirov Alexei (LAT), Ch World (juniors) 1990
click for larger viewAnalysis by Rybka 2.1o mp:
1. (-1.70): 27...Qb4 28.Kf1 Rxe1+ 29.Rxe1 Qxg4 30.Nh6+ Kg7 31.Nxg4 Nxd5 32.Rd1 Rc5 33.Ra1 Rc3 34.Rxa7 2. (-1.46): 27...Rxe1+ 28.Rxe1 Qd7 29.Nh6+ Kf8 30.Qf4 f6 31.Ng4 Nxd5 32.Qh6+ Kg8 33.Qd2 Rc7 34.Rd1 (, 12.10.2006)
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