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Later Kibitzing> |
| Aug-29-10 | | stacase: I missed 23 Qxg6+ |
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| Aug-29-10 | | VincentL: RIP FM Craig Van Tilbury |
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| Aug-29-10 | | whiteshark: RIP User: Craigokat |
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| Aug-29-10 | | Once: <Phony Benoni> Well said. I found the basic theme and the first few moves. But calculate all the way to 34. e6? Nope, not this soldier. Interesting how white uses the same tactical device twice in a row - a knight on the seventh rank supporting a queen check on the sixth. First we have Nf7-Qh6+ and then we have Ne7-Qg6+. And in each case, white is prepared to sacrifice his knight to strip away the defences around the black king. If I was feeling in an allegorical mood, this might remind me of pacman. But the news that we have lost Craig makes all lightness and jokiness seem utterly out of place. A sad sad loss, but a life well lived. |
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| Aug-29-10 | | dzechiel: No time for analysis tonight. Not only is this "insane", but we had a 20-round blitz tournament this evening, and it's after 1:00a. See you for Monday. DZ |
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| Aug-29-10 | | utrarapido: didn't see through to the end yet went for the main line (ie 22 Nf7+ as in the game). But it is worth pointing out 1 Rxd6!? (of course the trivial 1 Nxc8 Bxh4 2 Bg4 is strong but this is not insane!) and now:
a) 1 ... Bxh4 2 Nxg6+ hxg6 3 Rxe6
b) 1 ... Rxd6 2 Bxf6+ Nxf6 3 Nf7+ Kg7
4 Nxd6
c) 1 ... Rxe7(!) 2 Bxf6+ Nxf6 3 Qg3! and White's threats are difficult to meet. |
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| Aug-29-10 | | kungfufighter888: diffcult to solve |
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| Aug-29-10 | | David2009: C Van Tilbury vs A Zapata, 1980 C Van Tilbury vs A Zapata 22? Level material but White has an extra piece in play also, Black's Q is temporarily misplaced on a Q side Pawn forage.
22. Nf7+ Kg7 23 Qh6+ leads nowhere: Black has 3 minor pieces to defend g7 and the KR is in reserve on d7, defended by the Bc8.
Instead 22 Qf3 and now (A) 22...Bxh4 or (B) 22...Kg7. Black can of course surrender the exchange starting (C) Rxe7 but 23 Bxf6+ should leave White well on top. (A) 22...Bxh4 23 Qf7 (threatens mate on g8. The only way to guard g8 is 23...Nf6 allowing 24 Qxe6 with a promising attack: Black's d6 Pawn is weak. (B) 22...Kg7 23 Nef5+ gxf5 24 Nxf5+ Kf8 (or 24...Kf7 25 Qh5+ looks good) 25 Nxd6 Rxd6 25 Rxd6 Nxd6 26 Qxf6 leaves White ahead on material. Time to check. It will be interesting to see how Crafty End Game Trainer defends this position as
Black.
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Interesting - White plays the line I reject out of hand on general principles (Black's fortress had appeared too well defended). There is a moral here: always analyse out concrete forcing variations to their end. Crafty EGT check of the puzzle position 
click for larger view
(C Van Tilbury vs A Zapata 1980 22?)
http://www.chessvideos.tv/endgame-t... Crafty defends against 22.Qf3 with Kg7 and now my intended 23.Nef5+ gxf5 24.Nxf5+ loses to 24...Kh8! e.g. 25.Bxf6+ Nxf6 26.Nxd6 Nf4 0-1. Time to digest the game and other kibitzes. Meanwhile 'nul points' this Sunday and not that many points the rest of this week: I see the wood but miss the trees. In chess, the devil is in the detail. Thanks <CHESSTTCAMPS> and <Phony Benoni> for some star kibitzes earlier on this week pointing out what I had missed. |
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| Aug-29-10 | | Eduardo Leon: The first three moves are forced.
<22.♘f7+ ♔g7 23.♕h6+ ♔xf7 24.♕xh7+ ♘6g7> Not 24...♘8g7? 25.♕xg6+ ♔xe7 26.♕xf6+ ♔e8 27.♖xd6!, and the threat 28.♖xe6+ ♘xe6 29.♗h5+ decides the game. The lesser evil might be 27...♕c7 28.♖xe6+ ♘xe6 29.♕xe6+ ♔f8 30.♗h5, but black will have to give up at least an exchange to prevent mate. <25.♕xg6+ ♔xe7 26.♗xf6+> Now 26.♕xf6+ is made impossible by the e8 knight.
<26...♘xf6>
Not 26...♔f8? 27.f4!, bringing the f1 rook into the attack with tempo: 27...♘xf6 28.fxe5 ♖f7 (28...dxe5? 29.♖xf6+ ♔g8 30.♖xd7 ♗xd7 31.♖f7) 29.exf6 ♘e6 (29...♘e8 30.♕h6+ ♔g8 31.♖d3 ♕c7 32.♖g3+ ♘g7 33.♗h5) 30.♗h5 ♕c7 31.♖xd6! b5 32.♖fd1. <27.♕xg7+ ♔e6 28.♗g4+> Without its dark squared counterpart, this bishop cannot do anything, so white better get rid of it right now. <28...♘xg4+ 29.♕xg4+ ♔e7> Of course, the black king should not dare step into the f file. <30.f4!>
The minor piece attack is over. Now the rooks will show their power! Since 30...exf4 allows 31.♕g5+, covering d8, the black king must escape. NOW. <30...♔d8 31.fxe5 ♔c7 32.exd6+> Unfortunately for black, 32...♖xd6? allows 33.♕g7+, winning a rook. With four pawns, two of which are highly menacing, for a locked piece, white has a completely won game. |
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| Aug-29-10 | | Eduardo Leon: Errata: In the line 24...♘8g7? 25.♕xg6+ ♔xe7 26.♕xf6+ ♔e8 27.♖xd6! ♕c7, I missed the simple 28.♗h5+! ♘xh5 29.♖xe6+, winning on the spot. More proof that 24...♘8g7? would have been completely wrong. |
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Aug-29-10
 | | LIFE Master AJ: I analyzed for maybe 5-10 minutes.
I am more guessing, than anything else.
22.Nf7+, Kg7▢; 23.Qh6+, KxN/h7; 24.QxP/h7+ leads to a tremendous attack ... although, to be honest, I can't even begin to see "THE KNOCK-OUT" blow. However, since White has a lot of stuff hanging, and retreating lines look less than inviting, I would be willing to bet that this is forced. Let's see how I did. (After the Shirov-Topalov R+P endgame, I am almost afraid to look ...) |
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| Aug-29-10 | | Eduardo Leon: Oh, and I should have explicitly mentioned why 24...♗g7? did not work either: 25.♕xg6+ ♔f8 26.♗h5! ♖xe7 27.♗xe7+ ♔xe7 28.♕xe8+ ♔f6 29.♕f7+ ♔g5 30.♕g5+ ♔f4 31.g3#. |
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| Aug-29-10 | | sethoflagos: I think I've probably picked the wrong first move here, but for the record I went on a queen hunt with: 22. b4 ...
a) 22..Qd8 23 Nf7+ Kg7 24 Nxd8
b) 22..Qc7 23 Nf7+ Kg7 24 Nd5 Qc6 25 Bxf6+ Nxf6 26 b5 axb5 27 cxb5
c) 22..Qb6 23 Nf7+ Kg7 24 Qh6+ Kxf7 25 Qxh7+ N8g7 26 Nd5 Qd8 27 Nxf6 Qf8 28 f4 with overwhelming attack
d) 22..Qa4 23 Nf7+ Kg7 24 Qh6+ Kxf7 25 Qxh7+ N6g7 26 Bxf6 Nxf6 27 Qxg6+ Kxe7 28 Qxg7+ Kd8 29 Qxf6+
e) 22..Qxb4 23 Nd5 Bxh4! (23..Qa4 24 Nxf6 is too strong) 24 Nxb4 Bg5 25 Qb3 Bxh6 26 Nd5 ahead but not that much!
f) 22..Qxa2 23 Rd2 Qa4 24 Bxf6+ (better than 24 Bd1 Qxb4 25 Nd5 Bxh4 26 Nxb4) 24..Nxf6 25 Nd5 Nxd5 26 exd5 Nf4 27 bxc5 busts black's pawn centre (is this as good as it gets?) 
click for larger viewMain Line
22..cxb4 23 Nf7+..
At first 23 Qa7?! looked good but after 23..Bxh4 24 Qxb8 Rxe7 25 Qxc8 Kg7 black is at least equal. 23..Kg7 24 Qh6+ Kxf7 25 Qxh7+ N6g7 (25..N8g7 26 Qxg6+ Kxe7 27 Qxf6+ Ke8 28 Rxd6; 25..Kf8 26 Nxg6#; 25..Bg7 26 Qg8#)
26 Bxf6 Nxf6 27 Qxg6 Kxe7 28 Qxg7+ Ke6 29 Qg6..
click for larger view.. and the position is unclear.
Given that white's king side combination looks quite robust after all, I'm wondering whether 22 b4 does anything except give away queenside pawns. Too late to start again, so time to peek. |
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| Aug-29-10 | | BwanaVa: For those who missed the news a few weeks ago, Craig Van Tilbury died at the age of 53 on 8.13.2010. |
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| Aug-29-10 | | echever7: Looks pretty obvious 22-Nf7  Kg7 23.Qh6 Kxf7 24.Qxh7 and a)924..Kf8 25.Nxg6#
b)24....Bg7 25.Qxg6+ Kf8 26-Qxe6 1-0
c)24....N6g7 25.Qxg6 Kxe7 26.Bxf6 Kf8 and after, let say, 27.Bg5 white have a winning position (ideas as Rd3-f3, or Bh6-Bh5 or h4-h5-h6 or even f4!? seems than give an easy win. You can't even of "material advantage for black". Those three king' side pawns are worth more than those black pieces.
Worse even for black 26...Nxf6 27-Qxg7 and 28-Qxf6 1-0
If Black play 24...N8g7 is even easier for white 25.Qxg6+ 26.Bxf6 and again those plans exposed in point c) win. |
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| Aug-29-10 | | echever7: It's sad to see my fellow Zapata being destroyed in such a way ;) |
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| Aug-29-10 | | homersheineken: How far down the progression do you have to get for this to be solved? I got the first 8 moves ... is that enough? |
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| Aug-29-10 | | echever7: Oh! That's true! <VicentL> after Bg7 Qg8# I forgot that the "f6" bishop is not there anymore :)
But you're wrong. black can't come back again. There are a lot of winning continuations for white. |
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Aug-29-10
 | | Jimfromprovidence: It's amazing that the first 9 moves of the puzzle by white are all checks. I thought that black might be able to defend with 31...Rf7?!, hoping to exchange rooks and also creating an escape square for the king on d7. 
click for larger view One way that line loses is by 32 fxe5 Rxf1+ Rxf1 Kd7 34 Qh6! (threatening Qxd6#). 
click for larger view Now 34...Qc7 is forced and 35 Rf7+ wraps it up for white. |
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| Aug-29-10 | | sethoflagos: <<Jimfromprovidence:
I thought that black might be able to defend with 31...Rf7?!>He might have done better with 30..Kf8 giving him a chance to get Rg7 in. |
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| Aug-29-10 | | CHESSTTCAMPS: In this middlegame position, material is even, but white has a clear initiative on the kingside and black's Rb8 and Bc8 are not developed. This argues against any tension releasing exchanges such 22.Bxf6+? Nxf6 23.Nd5. White must attack! For some reason, I started looking at 22.f4(??), but within about 10 minutes, I realized that white has something much more straightforward and forcing: 22.Nf7+! Kg7 23.Qh6+!
I believe that many experts and masters would intuit that bringing the queen in with check is easily worth a piece in this situation. Concrete analysis firmly establishes that black's defensive minor piece cluster does not hold together well. 23... Kxf7 24.Qxh7+
So far, everything has been forced, and now black has 4 legal responses, three of which are quickly disposed of: A) 24... Kf8?? 25.Nxg6#
B) 24... Bg7?? 25.Qxg6+ Kf8 26.Qxe6 Rxe7 (otherwise 27.Nxg6# or 27.Qg8#) 27.Bxe7# C) 24... N8g7 25.Qxg6+ Kxe7 26.Qxf6+ Ke8 27.Bh5+! Nxh5 28.Qxe6+ Kf8 29.Qf5+ followed by Qxh5 and white's two-pawn lead combined with the badly exposed black king adds up to easy victory. D) 24... N6g7 25.Qxg6+ Kxe7 26.Bxf6+ Nxf6 27.Qxg7+ Ke6 28.Qg6 White threatens both 29.f4 and 29.Bg4+ Ke7 30.Qg7+ winning the piece back with a winning attack. D.1) 28... Qd8 29.Bg4+! (f4? Qg8 gives black more life) Ke7 30.Qg7+ Ke8 31.Bxe7+ Nxe7 (Bxe7 32.Rxd6 Nxe4 33.Rh6! wins immediately) 32.Rxd6 Qe7 33.Qg6+ Qf7 34.Re6+ Kf8 35.Qh6+ Qg7 36.Re8+ Kf7 37.Re7+ wins the queen. D.2) 28... Rf7 29.Rxd6+! (29.Bg4+ Ke7 30.Bh5 Be6) Kxd6 30.Qxf7 Nd7 31.Rd1+ Kc7 32.Qe7 Qb6 33.Bg4 Qc6 34.Bxd7 Bxd7 35.Qxe5+ Kc8 36.Rd6 Qc7 37.f4 and white should win easily with black's Rb8 still out of play. There are other promising lines in D.2 and I've likely missed the best. Mark Diesen, Richard Delaune, and Craig Van Tilbury were all prominent up-and-coming players in the Washington D.C. area in the late 1970's and all are gone now. |
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Aug-29-10
 | | scormus: <Craigokat> unbelievably brilliant attacking. If there was any justice in Chess, that game alone would merit a GM norm. At least the experience was chess and not boxing. <CG> great Sunday puzzle. It's that 31 f4 that's so hard to find, OK I'd given up long before. I decided after finding the first 4 moves I was nowhere near. Right both ways, they were correct and I wasnt anywhere near. |
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| Aug-29-10 | | CHESSTTCAMPS: <sethoflagos:> I agree with your preference for 29.Qg6 and I won this position (that you diagrammed) easily against Crafty, which started down line D.1 in my analysis. |
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Aug-29-10
 | | chrisowen: <Craigokat> A tap as rêver pit again faction 21..Bf6 revolutions eaten Nf7+. Dead doored white rattles king, nice key revisited h6 oracle handle monarchs dead brain alive in a vat. Not too taxing cart horses wrecked angle queen's lawnmower approach blood and mud. It was brill fishing little dips over more jailing king. Keepsake pawn zaggin f4xe5 fool not Alonso, mate deliver a jaffa Nf7 won. Shrinking embank the pawns lust to expand. |
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Aug-29-10
| | Jimfromprovidence: <sethoflagos> <He might have done better with 30..Kf8 giving him a chance to get Rg7 in> OK, but it's still over by then, right, after 31 Qf6+? 
click for larger view This move threatens if 32..Rf7, 33 Qxd6+, winning the other rook. Or, if 31...Kg8, then 32 Rxd6 seeing 32...Rxd6 33 Qxd6, below. (now threatening the b rook and also 34 f4, if 33..Ra8). 
click for larger view |
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Kibitzing
sac: 23.Qh6+