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| Aug-24-10 | | DarthStapler: I saw Qe3+ but I figured white could still win. |
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| Aug-24-10 | | Once: <Helios727> Not quite. After 19. Qd2 the move Bh4+ is nowhere near as effective as it as after 19. Qd3. This is what happens: 19. Qd2 Bh4+ 20. Rxh4 Qg1+ 21. Bf1 
click for larger viewThe white bishop blocks the queen check and evades capture. White emerges a piece up. Instead, 19. Qd3 blocks the bishop's path back to f1. Now Bh4+ does work for black: 19. Qd3 Bh4+ 20. Rxh4 Qg1+ 21. Qf1 (the Bc4 can't get to f1) Qg3+ 22. Qf2 Qxf2 23. Kxf2 Bxc4. So if we are being really picky, 19. Qd3 leads to a level position after the Bh4+. White gets an advantage after 19. Qd2 because the Bh4+ tricks doesn't work and black has to play 19...Qd8. |
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| Aug-24-10 | | ZUGZWANG67: Fortunatly I did not post my analysis of the position, which was totally wrong! Yeah! I fell for it. |
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| Aug-24-10 | | VincentL: I wondered some time ago whether Chessgames might consider varying the order of presentation of the puzzles from week to week - this would make them more challenging.
I don't think we would want to be faced with an "Insane" puzzle on a Monday, so maybe keep the "Very Difficult" and "Insane" grades for the weekend, but have a more random presentation of the other levels during the week. The "Easy" puzzle could be on Tuesday one week, Thursday the next, etc. Thus each week (Mon - Fri) there would be one puzzle each of grade "Very Easy", "Easy"..... "Difficult", but we wouldn't know in which order they were coming. To avoid knowing the level, there would have to be just two grades "Easy - Difficult Medium" (terrible name! - for the weekdays) and "Very Difficult / Insane" for Saturday and Sunday. I think we all appreciated today's puzzle, because it wasn't just the standard two or three move decisive combination that we have come to expect on Mondays/Tuesdays. This has probably been debated before, but any thoughts? |
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| Aug-24-10 | | ZUGZWANG67: I must admit that I had ny doubts about my analysis. That's why I did not post it. It went something like 19.Qxe6+ (of course) and 19...Bxe6 20.Bxe6+ and mate to follow. But I also saw 19...Bh4+ 20.Rxh4 fxe6 21.Bxe6+ Rf7 22.Bxf7+ or 22.gxf7. The fact that there was no obvious difference (hey!? isn't that tuesday?)between the possible captures at f7 should have alerted me. Peace! |
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| Aug-24-10 | | ZUGZWANG67: But I think that during an actual game, with no time struggling, one should easily spot 19...Qe3+, being given that before playing a move one should always wonder about "unimportant thing, such as "Does my opponent have an annoying check?", or "Is my Q en prise?" lol |
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| Aug-24-10 | | WhenHarryMetSally: Pxf7 but this loses out, and the impending black Qe3+ looks like GG for white, especially if black can recruit is black bishop to get in on the action on the h file. Whatever white does it had better be completely forcing. |
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| Aug-24-10 | | Once: <VincentL> Some good ideas there, and you're right - this has been debated before ... although I'm not aware that we've ever come to a firm conclusion. Chessgames.com has to appeal to a wide range of chess players, from absolute beginners to grandmasters. And that is not easy. Make the puzzles too tricky and the new folk can easily get disheartened. Make them too easy and the grizzled vets start grumbling. What CG has started to do is to throw in some less obvious POTDs. We've had stalemate week, spoilers (like todays) and last week's "little moves" puzzles. And that, for me, keeps it fresh and interesting. If ever a puzzle is too easy then we will make up our own entertainment anyway by trying to find the move where the losing side went wrong or ... ahem ... singing songs and telling jokes. I think today has been great. I could be wrong, but I don't think that Tuesdays often generate five pages of fresh kibitzing. |
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Aug-24-10
 | | scormus: Now I've had my dinner I can take another look.
19. Qd2 Qd8 20. gxf7+ Bxf7 21. Bxf7+ Rxf7 22. 0-0-0 Bh4 (is this a ?)
It seems not, 23 Qh2 Rxf4.
There's an old saying, "when in doubt, read the instructions" In POTD, I'd say "When in doubt, play the game." Before castling W plays 9 g4, 10 h4, 11 a4. And that's supposed to win against the Najdorf? It might have looked nice for a while but thats all. It looked nice for a while in my match against against Krajnc too. |
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| Aug-24-10 | | James Bowman: Surprised that many struggled somewhat with this one, maybe I'm really improving after gxf7 wasn't concrete enough I realized the Kings flight squares were limited and with a rook poised to invade the back rank Qxe6 was simple enough to see through to the forced mate. Pawns on the sixth near the King spells trouble. |
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| Aug-24-10 | | BOSTER: <CG> It would be nice if you continue such foolish strategy from now on. |
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| Aug-24-10 | | James Bowman: <once> I concur! Chessgames does a fine job and has a wide audience to please. I see no further improvements to be made in the broad sense. Maybe I'm just jubilint because it's finally coming together for me. |
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| Aug-24-10 | | wals: The power of suggestion. Queen sac. must indicate victory. So evidently thought Black, and so evidently thought I. How much are we configured by our beliefs! May the gods grant us relief from the thoughts which chain us.
Anyway, back to what some consider is the real world, (-1.46):11.a4. White's blunder.
Better,
Analysis by Rybka 3 1-cpu: depth 17:
1.  (0.53): 11.g5 Ng8 12.Rg1 hxg5 13.hxg5 exf4 14.Bxf4 Ne5 15.Nd4 Qb6 16.Be2 Bf8 17.Qd2 Nc4 18.Bxc4 bxc4 19.0-0-0 Rb8 Black's blunder.
(+2.13):15...hxg5. Better,
1.  (-1.19): 15...exf4 16.Bd4 Ne5 17.Bxe5 Bb7 18.Qd3 dxe5 19.Bd5 Qb6 20.0-0-0 Rfd8 21.Kb1 Rbc8 22.Qe2 Ba8 23.Bxa8 Rxa8 24.Rd5 2. = (0.00): 15...Nb6 16.Bxb6[] Qxb6[] 17.Qd3 Bg4 18.a5 Qc7 19.gxh6 Rfc8 20.Bxa6 Qxc2 21.0-0 Bxh4 22.fxe5 Qxd3 23.Bxd3 dxe5 24.hxg7[] Bg5 25.a6 Be6 3. = (0.00): 15...Bb7 16.Qd3[] exf4 17.Bxf4 Ne5 18.Bxe5 dxe5 19.gxh6 Bxh4+ 20.Ke2 Qf6 21.Rag1 g6 22.Rf1 Qg5 23.Rxf7 Rxf7 24.Bxf7+ Kh8 25.Qh3 Bxe4 26.Qxh4 Qg2+ 27.Ke3 Qf3+ 28.Kd2 Qg2+ 29.Ke3 Qf3+ 30.Kd2 Qg2+ 4. (0.44): 15...g6 16.0-0-0 exf4 17.Bxf4 Nb6 18.Qd4 Bg4 19.Rd2 Nxc4 20.Qxc4 Rc8 21.Qxb4 hxg5 22.hxg5 Bxg5 23.Qd4 Bf6 24.Qe3 Re8 25.Bxd6 Bh5 26.Kb1 Bg5 27.Bf4 5. (0.54): 15...Rb7 16.0-0-0 Nb6 17.Bxb6 Qxb6 18.gxh6 Be6 19.Qd3 Bxc4 20.Qxc4 Rc7 21.Qd3 Rfc8 22.Rh2 exf4 23.hxg7 Qe3+ 24.Kb1 Bf6 25.Nd4 b3 26.Nxb3 Qg3 27.Re2 Rc4 28.c3 Kxg7 White's blunder,
(-1.80):18.g6. Better, Qd2, +2.22
Black's blunder,
(+0.89):18.Be6. Better, Qe3+, -1.80.
White's 19.Qxe6, -2.08, was a blunder whichbelieve it or not won him the game. - |
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Aug-24-10
 | | chrisowen: Backdated game accounts for leap in daddled cocktail black goes up in smoke. Alekseev might have a sparrow'd 19..Qe3 milking pitch in jugular. Mulling over weak again wristy earlap Qxe6, books one of chess's ghosts lost. Capitalising with nether Qd2 lands drop in hot water. Immersion h6xg opens the file, glance pg6 wad worth in let saccing. Whats with the bishops thing erasing spirits of queen check is my fare? Why king's exposed. Round up Qxe6 points black backward white looks cor in darkly those stationary rooks agape. Off peel boom it flourish fabulous cork cash in sweet finish. Black lie - cure sign away. Cough he a piece up. |
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| Aug-24-10 | | CHESSTTCAMPS: <<James Bowman:> Surprised that many struggled somewhat with this one,..> I recommend that you test your solution against an engine. Often I learn something when I do this in the more complicated puzzles. Unfortunately, the game move 19.Qxe6 is not the solution and it doesn't even draw as I suggested in my first post. Try using the Crafty Endgame Trainer link provided in the <David2009> post http://www.chessvideos.tv/endgame-t... |
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| Aug-24-10 | | YouRang: The annotator put a question mark on 19.Qxe6, and rightly so. But in that case, there should have been two question marks on 19...1-0, since the resignation was a far bigger blunder. |
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| Aug-24-10 | | tacticalmonster: Candidate: 1 Qxe6 and Qd2
a) 1 Qxe6 Qe3+! (1...fxe6?? 2 Bxe6+ Rf7 3 Bxf7+ Kf8 4 Rh8#) 2 Kd1 Qf3+ 3 Kd2 Qxf4+ 4 Kd3 Qf3+ 5 Kd2 Bg5+ 6 Ke1 Qxh1+  + b) 1 Qxe6 Qe3+ 2 Kf1 Qxf4+ 3 Kg2 Qxe4+ 4 Kg3 Qf4+ 5 Kg2 Qg5+ 6 Kh2 fxe6! 7 Bxe6+ Kh8 + c) 1 Qd2 Bh4+ (1...Bxc4 2 Rh8+ Kxh8 3 Qh2+ Bh4+ 4 Qxh4+ Kg8 5 Qh7#) 2 Rxh4 Re8 3 Bxe6 Rxe6 4 gxf7+ Kxf7 5 o-o-o  |
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| Aug-24-10 | | gofer: This took me a while to find. I was completely side-tracked by the attack on the a2-g8 diagonal. But I kept coming back
to black's obvious reply which was always Qe3+! This seemed problematic in every line, so then I thought about other mate threats
and saw the "old" Rh8+ sac forcing the king into the open to allow the queen to come to the open h file with check! Now the really horrible thing about today's puzzle is that Qd3 looks almost playable as it ticks quite a few boxes, but it
fails in lots of ways, but Qd2 just manages to clinch the deal! 19 Qd2 ...
Black has to deal with 20 Rh8+ Kxh8 21 Qh2+ Kg8 22 Qh7# 19 ... f5/f6 20 Bxe6+ Rf7 21 Bxf7+ Kf8 22 Rh8#
19 ... Rfc8 20 Rh8+ Kxh8 21 Qh2+ Kg8 22 Qh7+ Kf8 23 Qh8# 19 ... fxg6 20 Bxe6+ Rf7 21 Qh2 Bh4+ 22 Qxh4 Qe3+ 23 Kd1 winning But what about
19 ... Bh4+!
20 Rxh4 Qg1+!
Now we see the real reason why 19 Qd3 is so flawed! With the queen on d2 the LSB can come to protect the king! 21 Bf1! Qg3+
22 Qf2 Qxf2+
23 Kxf2 ...
and its game over for black as he has given up a Bishop for nothing! Now this is way passed a normal Tuesday puzzle, so I must
have missed something! Time to check... |
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| Aug-24-10 | | gofer: Well, I did indeed miss something. Today's was a spoiler. Well it certainly looked like one, but even knowing that I am not sure that I can say I found the best response! I missed 19 ... Qd8 and opted instead for 19 ... Bh4+. This indeed did "spoil" my day... :-( |
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Aug-24-10
 | | OhioChessFan: 19. gxf7+ Bxf7 20. Qd3
The pawn capture first appeals to me once more.
I wouldn't want to be Black in this position:
click for larger view |
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Aug-24-10
| | OhioChessFan: Does 19. Qxe6 Qe3+ remind anyone else of the (maybe) perpetual Kaspy missed against Deep Blue? |
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| Aug-24-10 | | gofer: <Once, VincentL et al> I think <CG> do a bang up job! Think how my productivity would rocket if this site every disappeared! :-) |
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| Aug-24-10 | | outplayer: was Alekseev born in 1955? |
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Aug-24-10
 | | Phony Benoni: <OhioChessFan: 19. gxf7+ Bxf7 20. Qd3
click for larger viewThe pawn capture first appeals to me once more. I wouldn't want to be Black in this position:> Neither would I, since I don't play the Sicilian. But after 20...exf4 threatening to trade queens, I don't see any particular problems for Black. For that matter, what's wrong with 20...Bxc4? But I'd better stop with the variations before I commit one of my invariable blunders. Instead, I'd like to discuss the "Never Resign" philosophy brought up earlier. Now, I'm a member of the Resign Early and Often School. I've never gotten a lot of pleasure out of beating a dead position for two or three hours, and generally just give it up and go do something more productive like kicking myself in the backside for being such an idiot. But there is a huge difference between holding on grimly in a hopeless situation and this game. In the first place, White has put his queen en prise without check. Most any move that would normally be ridiculous can now be considered, since White might have to leave his queen hanging in response to it. Secondly, Black has a good, solid, forcing check available. These moves should always be looked at in any event, just in case. I'm pretty sure what happened is that Black saw the Tuesday-level checkmate after 19...fxe6 and resigned out of sheer disgust. (After all, if he missed 18...Qe3+, he wasn't likely to see it on move 19 either.) These things happen, and it's part of the growing process to fight such tendencies. That's a lot different from dragging out a 99% lost game. Finally, I want to make it very clear that I don't object to people playing out those games. I understand what they're doing and why they're doing it. That's just not my particular mindset. |
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| Aug-24-10 | | David2009: This has to be one of the best puzzles yet. Using the second Crafty End Game Trainer link given by <CHESSTTCAMPS> (reference Lepeshkin vs Alekseev, 1955) based on the critical line given by <Once with the help of Fritz> namely <19.Qd2 Qd8 20.0-0-0! Bxc4 21.Na5!>
the game continue (Crafty defending as Black, me playing White helped by trial and error) 21...fxg6 22.Nxc4 Qe8 23.fxe5 Qxa4 24.Qd5+ Rf7 25.exd6 Bf6 26.e5 Bg5+
27.Kb1 b3 28.cxb3 Qxb3 29.Rhf1 Qb7 30.Rxf7 Qxf7 31.e6 Qf5+ 32.Ka2 Qxd5 33.Rxd5 Bf6 34.Ne5 g5 and we reach a critical position:
click for larger view
This position is worth a further Crafty link.
http://www.chessvideos.tv/endgame-t...
First time round I snatched defeat from victory with a brilliant but unsound combination: 35.b3 Re8 36.e7 Bxe7 37.dxe7 Rxe7 38.Rd8+ Kh7 39.Rh8+!? Kxh8 40.Ng6+ Kh7 41.Nxe7
Unfortunately Black now wins: the doubled Pawns overwhelm the N. Second time round I found the winning line: over to fellow kibitzers.
Your task is to earn the full point against Crafty EGT starting from the diagram and link given above. Two solutions: one wins very quickly, the other slowly but steadily. Do we conclude from this that the puzzle was a win for White, after all? |
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