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< Earlier Kibitzing · PAGE 2 OF 4 ·
Later Kibitzing> |
| Oct-05-07 | | mkrk17: I got Bh4. Nice move. Not sure if Black sacrificed his queen or something, but with Bh4, he certainly gets back material with attacks, or he gives checkmate. |
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| Oct-05-07 | | moppa: <MAJ> Yeah, it does now seem I underestimated Rd8+ while solving the position... It happens. And I could've ruined it all with Kxd8 in blitz game (though I doubt I would make a queen sac like that in any game), since I didn't see DWINS's line 27.Qd3+ Ke7 28.Kxh2 Bf2+ 29.Qh3 Rxh3+ 30.Kxh3. I still claim part of the credit, because Bh4 was black's last hope! |
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| Oct-05-07 | | Towershield: I saw -Bh4 instantly but didnt look any further. |
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| Oct-05-07 | | stanleys: <Towershield:> <I saw -Bh4 instantly but didnt look any further.> I did exactly the same.This is my favourite mating construction (saw it displayed for the first time by Keres,recently there was a similar example on <CG.com> However we should learn to consider the opponent's possibilities too |
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| Oct-05-07 | | karnak64: Gee, that's a lot of work to win a pawn .... |
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| Oct-05-07 | | whiteshark: Starting with 28... Rxg2+ black transformed his advantage immediately into a winning endgame. However, he could have use the circumstance that white is in a zugzwang-like position. Moving <28...R8h3!>
click for larger viewbrings the rook in a better position, compared to the actual game, so that it's serves an even more superior endgame. In a correspondence game I would have evaluated in-depth before moving it. |
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| Oct-05-07 | | CapAnson: Hey I got it, course mainly that's because the other lines obviously didn't quite work for black. |
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| Oct-05-07 | | ConstantImprovement: Black is down a queen for bishop, so it will be important to watch out for white sacrifices to fend off the attack. It probably starts with
25. ... Bh4.
The cause why this can be played is
26. Kh2:? Bf2# with a discovered checkmate.
Furthermore it threatens 26. ... Rh1+ 27. Kh1: Bf2# with the same idea. This is so strong that most white answers are useless. Only a few remain: I. 26. Rd8+
1. 26. ... Kd8:? 27. Qd3+ (with the idea to intercept at h3) Bd5 28. Kh2:!
Bf2+ 29. Qh3 Rh3:+ 30. Kh3: with white an exchange up 2. 26. ... Bd8:, winning, because black, having won a full rook, now threatens Bb6+ with mate to follow (the flight square f2 would have to be blocked, allowing Rh1#) and g2 is still weak. Should White try to block the a7-g1-diagonal against Bb6+, then simply 27. ... Bh4 again. For example:
27. Nd4 (bringing the knight to the king's wing) Bh4 28. Nf3 Bf3: and mate,
29. Qf3: (Rf3:) Rh1+ 30. Kh1: Bf2+ 31. Qh3 (Rh3) Rh3:# II. 26. Qd3 right away does not work because of 26. ... Rg2:+ 27. Kh1 Bf2+ 28. Qh3 Rh3:# III. 26. g3 (g4 is the same) Re2: 27. h4: Rg2+ with mate IV. Interception seems to be the only chance, so: 26. Rd3 (or 26. Rf3) Rh1+! 27. Kh1: Bf2+ 28. Rh3 (Safe?) Rh3:# (No, the g2-pawn is pinned by the b7-bishop.) |
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| Oct-05-07 | | ConstantImprovement: Correction to the previous post (After anlyzing the solution): Of course, there is no mate after 25. ... Bh4 26. Rd8+ Bd8: 27. Nd4 Bh4 28. Nf3 Bf3: 29. Qf3: (Rf3:) Rh1+ 30. Kh1: Bf2 31. Qh3 (Rh3), since black does not have a second bishop on a8-h1. It would have been nice, though, to have one. |
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| Oct-05-07 | | psmith: <Mostly Average Joe> "I am not sure why black sacrificed his queen with 22...Qxd6, when the natural 22...Kb8 is just as good or slightly better, according to Hiarcs." well, because Black saw that the Queen sac works, and Black, not being a computer, is playing chess for beauty and not just to win... Kb8 wouldn't have put this game into the chessgames puzzle category would it? Black wanted his moment of glory. |
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Oct-05-07
 | | gawain: I considered Bh4, even felt sure that it had to be the right move, but I sure did not see the winning continuation. A really nice puzzle. |
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| Oct-05-07 | | awfulhangover: Isn't this easy for a Friday puzzle? They can be hard enough, but this was a position with an obvious first move. 5/5 so far. That does not happen often! |
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| Oct-05-07 | | Creg: <psmith> You beat me to it. I was going to say the same thing about a human playing this game, not a computer. |
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| Oct-05-07 | | kinggambits: Except for 25..Bh4 I could not solve this. Forget finding anything like this over the board After looking into the lines posted by <MAJ et al> I am amazed at White's resourceful defense as well. Black's play is no doubt brilliant. |
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| Oct-05-07 | | beginner64: <awfulhangover: Isn't this easy for a Friday puzzle> Yes, I agree, but MAJ is the authorized spokesperson on this subject. On a different topic though, did the hangover (or the lack there of) have any role in solving this Fridays puzzle? [j/k] |
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| Oct-05-07 | | VargPOD: I got this. Looked fairly easy for a Friday Puzzle, but have to say didn't calculate what would happen after 26...Kxd8, 26...Bxd8 looked good enough. 5/5 so far this week, I'm really happy! |
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| Oct-05-07 | | mpmeints: I am going to ask what must be the obvious (but I am missing-being at work and not having a much time to look). Why did white not play 26 King H2 and take the rook while the bishop has blocked the rooks protection. I know black can pull the bishop back and threaten the white rook with a discovered check, but the King has two ways to escape and would have an extra piece to sacrifice for protection. |
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Oct-05-07
 | | tpstar: <mpmeints> Indeed, that's the whole point of the puzzle. 26. Kxh2? loses to 26 ... Bf2+:
click for larger viewwith mate after 27. Qh5 Rxh5#. |
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| Oct-05-07 | | YouRang: I missed it. However, I feel like I learned something! :-) This looks like a tactic worth remembering.
I knew I wanted to move the DSB, given white's weakness with dark squares, but I couldn't find a good place to put it. I glanced at 25...Bh4, but (once again) my shallow analysis dismissed it since it left my rook hanging. Too lazy to notice that this rook sac leads to mate-in-2! :-( |
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| Oct-05-07 | | outsider: wow! did three stars for the first time and in two minutes. hope everybody else succeeded as well |
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| Oct-05-07 | | MostlyAverageJoe: <Creg> & <psmith> Yes, I agree that Q sac is beautiful play and very appealing to all sensibilities. I should've elaborated my "I am not sure why black sacrificed his queen" remark; I meant more something along the lines of: what prompted Schmidt to even look at the Q sac, which does not get fully resolved until about 8 full moves later, when Kb8 was readily available? Computer evaluation is incidental here, just confirming that Kb8 is indeed a good move. It sure took guts to play that sac, trusting yourself not to have made a mistake in the 16-ply calculation.... <VargPOD>, <awfulhangover> and anyone else who found it easy for Friday - yes, it was a bit below average according to my computer evals, but not much. On the other hand, Thu/Fri difficulties are not that far apart. This puzzle could've been just as well in the range of harder Thursdays. |
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Oct-05-07
 | | playground player: Some poor saps as White would have played 26. Kxh2, walking right into Bf2#. I'm not saying who. |
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| Oct-05-07 | | kbaumen: I found Bh4 but why 27 ... Bb6 if 27. ... Bh4 can be played again? I can't really see how to avoid the mate 28. ... Rh1+ 29. Kxh1 Bf2+ 30. Qh5 Rxh5# without giving up a lot of material or getting another kind of mate. |
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| Oct-05-07 | | kevin86: White is in zugzwang: After 41 b3 a3 and black will gobble up white's knight pawns and with take the others in good time. |
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| Oct-05-07 | | SuperPatzer77: White resigns because White is in complete zugzwang. If White moves the second b-pawn to b3, Black's strong reply to 41.b3 is 41...a3!  (not 41...axb3?? 42.Kxb3 still unclear). Black forces White to give up all of his white pawns. 41. d5 (White is in despair) exd5, 42. Kd4 Kxb4, 43. Kxd5 Kb3, 44. Ke6 Kxb2, 45. Kf6 a3, 46. Kxg6 a2, 47. Kxf5 a1=Q, 48. Ke6 Qa4, 49. f5 Qg4!, 50. Ke5 Kc3, 51. f6 Qd7, 52. Kf4 Kd4, 53. Kg5 Qf7, 54. Kf5 Kd5 . Thus, White is in complete zugzwang. |
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Kibitzing
sac: 22...Qxd6
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