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Later Kibitzing> |
| Sep-05-12 | | Abdel Irada: <Once>: I disagree with your assessment. Today's puzzle is far different from yesterday's, and far simpler. The distinction between them is that there are fairly forthright forced mates in all lines of this puzzle, whereas in yesterday's we often had to settle for a clear but not immediately winning advantage. I believe this was a suitable Wednesday puzzle. As for that "Tuesday" puzzle, though, I think it should have been presented on Friday or Saturday. |
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| Sep-05-12 | | whiteshark: Beautiful Black and White covering of diagonal moving pieces. |
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Sep-05-12
 | | perfidious: < kasputine: For instance, it's a "she". Sipke Ernst is a woman, FIDE rating: 2548, quite strong.> Ernst is not a woman, though his opponent certainly is: http://yelizavetaorlova.net/content... |
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| Sep-05-12 | | tarek1: With <21...Rxf2+> Black removes the last thin cover the white king had. <22.Kxf2> Obviously declining the sac results in an immediate mate by Qh2#. <22...Qh2+>
A. <23.Kf1 Qh3+> Best. Forces the white king into a bad square. 1) <24.Kg1 Bd4+ 25.Re3 Bxe3#> 2) <24.Ke2 Qg2+ 25.Ke3 Bd4#> 3) <24.Kf2 Bd4+ 25.Re3> this is least clear variation and I have trouble visualizing this position.
But it seems to that <25...Bxe3+ 26.Ke2 e5> is decisive because of the threat Bxg4+ that leads to mate. B. <23.Kf3 Qh3+>
1) <24.Kf2 Bd4+> like line 3 above. 2) <24.Ke2 Qg2+> like line 2 above. Time to check. |
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| Sep-05-12 | | Memethecat: 21...Rxf2+ 22.Kxf2 white has to take the R or its mate next move. 22...Qh2+ white is now doomed, he has 3 options but they don't help, black can use the Q & DSB to corner him & win. |
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| Sep-05-12 | | tarek1: Ah, I missed the fact that after <26.Ke2> (my line A3) <26...Qg2+ Kxe3 27.d4#> is mate. |
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| Sep-05-12 | | agb2002: Black has the bishop pair and two pawns for a rook and a bishop. The first idea that comes to mind is 21... Rxf2+ to clear the path for the black queen, 22.Kxf2 (else mate next) 22... Qh2+: A) 23.Kf1 Qh3+ (23... Bd4 24.Qf3)
A.1) 24.Ke2 Qg2+ 25.Ke3 (B)d4#.
A.2) 24.Kf2 Bd4+ 25.Re3 (25.Ke2 Qg2#) 25... Qxe3+ 26.Kg2 (26.Kf1 Qf2#) 26... Qxd3 - + [2B+3P vs R]. A.3) 24.Kg1 Bd4+ 25.Re3 Bxe3#.
B) 23.Ke3 Bd4+ 24.Kf3 Qf2#.
C) 23.Kf3 Qh3+ transposes to either A.1 or A.2. |
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Sep-05-12
 | | gawain: This is a delightful puzzle. At first glance Black's forces seem inadequate to force mate, and White has so many pieces hanging around! However White's pieces are badly placed, and Black has those advanced pawns just waiting for their chance to participate in a mate. And so it goes. |
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| Sep-05-12 | | kevin86: The on-the-bias pieces win it big for black. |
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| Sep-05-12 | | EXIDE: Got this one after investigating some different paths. Frankly, it was not that easy, I think I got it because there were not that many alternatives on the board. I think there was only one another for black 21...,Rh8 which does not work. |
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| Sep-05-12 | | gofer: My guess would be...
<21 ... Rxf2+>
22 Kg1/Kh1/Kh3 Qh2#
<22 Kxf2 Qh2+>
(23 Kf3 Qh3+ 24 Kf2/Ke2 transpose to the lines below...) <23 Kf1 Qh3+> (23 Ke3 Bd4+ 24 Kf3 Qf2#) <24 Kf2 Bd4+> (24 Ke2 Qg2+ 25 Ke3 Bd4# or 24 Kg1 Bd4+ 25 Re3 Qxe3#) <25 Re3 Bxe3+!>
<26 Ke2 Qg2+!> (26 Ke1 Qg3+ 27 Ke2/Kf1 Qf2#) <27 Kxe3 d4#> (27 Ke1 Qf2#) So basically its a forced mate in 7! |
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Sep-05-12
 | | Once: <Abdel Irada> Easier than yesterday's puzzle? Quite possibly. But both seem harder than your normal Tuesday and Wednesday. It is fairly unusual in my experience for a Wednesday puzzle to have a winning line that is seven moves long, especially as black is down on material all the way through that line. You'd also expect just about everyone to "ace" a wednesday, which we certainly haven't seen today. I have to say that your analysis looks pretty comprehensive though! Some time ago CG talked about bringing in a new puzzle picker to help with GOTD. I wonder if that is part of the explanation of why the last two days have seemed a bit unusual. |
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Sep-05-12
 | | chrisowen: Ok again French I net it rookf8xf2+ king take back see deep bishop will come to a d4 a dove no finishes later ko 21.Ra2 then gg it his in ah it Rxf2+ off bridge is hanging rook cleric will make up the ground for fulminate in no time like f8 rock in f2 thin king 22.Kxf2 Qh2+ 23.Kf1 Qh3+ 24.Kf2 Bd4+ explosion in old piece rooke3 to hive he ment it's right ink queen mitiagte in g2+ or h4+ in set hit cain f2#. |
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| Sep-05-12 | | Tiggler: <Abdel Irada>: <The doors of inception>. I concur with your assessment. There are a number of lines to work through, but a finite number and all relatively short. Not like <Heaven and Help>, which we had yesterday. |
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| Sep-05-12 | | M.Hassan: "medium/Easy" Black to play 21...?
Black has a Bishop+2 pawns for a Rook.
21............Rxf2+
<if King declines, will be mate by ...Qf4 or ...Qh2> 22.Kxf2 Qh2+
A) 23.Kf3 Qh3+
24.Kf2 Bd4+
25.Ke2 Qe3+
26.Kf1 Qf2#
or
24...........Bd4+
25.Re3 Bxe3+
26.Ke2 Qg2+
B) 23.Kf1 Qg2+
24.Ke3 Bd4#
Time to check
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Correct, but I think the puzzle was difficult. Had to work hard on it.
27.Kxe3 d4# |
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| Sep-05-12 | | JG27Pyth: The final pawns-and-Queen mating net with the king executed against a wall of his own futile guards (...Bxe3+ Ke2 Qg2+!! Kxe3 d4#) is extraordinary. Thanks kibitzers I wasn't ever going to find that myself! A good puzzle -- although almost counter-instructional in the way a poorly supported attack into a hive of enemy pieces nevertheless succeeds. Rather a Hollywood style action movie ending. I leave it to <Once> to write the scenario. |
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| Sep-05-12 | | James D Flynn: 21…..Qf4 22.Rf1(if Nf3 Qxg4 23.Kf1 Qh3+ 24.Kg1 Rh8 25.Nh2 Qxh2+ 26.Kf1 Qh1+ 27.Ke2 Qf3+ 28.Kf1 Rh1#)Be5 23.Nf3 Qxg4+ 24.Kh1 Rh8+ 25.Nh2 Rxh2# |
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| Sep-05-12 | | Moonwalker: I got the general idea.. Sac the rook, bring in the queen, force white into a dark square so the bishop can get involved. In my analysis I responded to 23. Kf1 with Qh1+. <Phony Benoni> says it doesn't work as well. I'll take his word for it! |
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| Sep-05-12 | | QueenMe: I guess this week's theme by now is clear: spotting a defenseless king. Today, Black takes advantage of an intersection of several traits about White's position: 1) White has only a white bishop, which can never protect black squares.
2) The knight is currently on a black square, and is therefore only covering white squares.
3) Ditto for the queen: it also is now only covering white King-side squares
4) Black's hemming in of his e1 Rook means that the only squares it's covering now are those on the e-file. So, don't look now, but e3 and e5 are the ONLY black squares black has covered on the entire right side of the board (well, King coverage doesn't really count). So all Black has to do is give his queen a little maneuvering room with ... 21) ... ♖xf2+
And the rest is essentially details, which my fellow kibitzers have done their usual excellent job unfolding. The only real pitfal is to avoid bringing the queen to h1, but to rather go back up to h3 and check diagonally, which forces the White king onto the black squares that are met with ... bd4+. The main thing is that White's bishop and knight can't interpose any of the ensuing checks after 21) ... ♕h2+. By the time black can even bring the e1 Rook to interpose, it's basically a donation, and Black resigns after seeing White follow through and wisely capture with the Bishop, not the Queen. Even without seeing the clever d4# at the very end, it's clear that White is in a scissors attack, and is going to lose either his queen or king. Time to get up and shake hands. |
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| Sep-05-12 | | Tiggler: <QueenMe> a very lucid summary, thank you. |
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| Sep-05-12 | | TheBish: D Kagramanov vs S Ernst, 2007 Black to play (21...?) "Medium/Easy"
My first hunch of a rook sac proved correct.
21...Rxf2+! 22. Kxf2
Otherwise it's mate with 22...Qh2#.
22...Qh2+ and now:
(A) 23. Kf1 Qh3+! 24. Kf2 (or 24. Ke2 Qg2+ 25. Ke3 Bd4#) Bd4+ 25. Re3 (or 25. Ke2 Qg2#) Bxe3+ 26. Ke2 (or 26. Ke1 Qg3+ 27. Ke2 Qf2#) Qg2+! 27. Kxe3 d4#. (B) 23. Kf3 Qh3+ 24. Kf2 Bd4+ transposes to (A).
(C) 23. Ke3 Bd4+ 24. Kf3 Qf2 is mate. |
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| Sep-06-12 | | avidfan: Continuing from the final position if 26.Ke2 Qg2+ 27.Kxe3 d4# is a rare mate of the White king in the centre by pawns and queen with 3 White pieces as spectators unable to help. The ♗ blocks the escape of the king at d3, the only square not controlled by Black.
click for larger view |
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| Sep-06-12 | | David2009: D Kagramanov vs S Ernst, 2007 Black 20? Well, they say you learn more from the puzzles you miss. I rejected the R sacrifice and Q check because after Kf3 or Kf1 23...Bd4 semed too slow and I could see no way of mobilising the White-squared Bishop. I missed the Queen check. Instead I blunder with 20...Ng6? (intending to mobilise reinforcements) leaving the N en prise. After 21.Bxg6 the R sacrtifice is essential to save the game and may or may not still win but my blunder makes it heavy work. Here's the puzzle position colours reversed
click for larger view (Kagramanov vs Ernst 2007 20...? colours reversed) with a corresponding link to Crafty End Game Trainer: http://www.chessvideos.tv/endgame-t....
I managed to win the colours-reversed position starting 1.Ng3?? Bxg3 2.Rxf7+ Kxf7 3.Qh7+ Kf6 4.Qh6+ Ke7 5.Bb4+ Nc5 6.Qxg5+ Kf7 6.Bd5+ Qxd5 7.Qxd5+ Kg7 (why not Ne6?) 8.Bxc5 Rf7 9.Qg5+ Kh7 10.Qh5+ Kg7 11.d5 Rf1+ 12.Kc2 Re4 13.Bd4+ Rxd4 14.exd4 bxc4 (and White's material advantage proves to be too much), but I am not sure Crafty EGT found the best defence. The learning point is that I was thinking too dogmatically in the initial position - "the Queen cannot mate alone" missing the crucial variation 23...Qh3+ 24.Ke2 Qg2+ 25.Ke3 Bd4#. |
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| Sep-06-12 | | Abdel Irada: <poszvald: Rxf2+ does the trick, as white will loose <either queen> or be mated.> He has more than one? |
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| Feb-20-14 | | SpiritedReposte: Drinking some coffee the pun just jumped out at me. "French Roast". Sorry if that has been used a trillion times already lol. |
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Kibitzing
sac: 17...Rxh2