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| Jan-03-10 | | cyclon: Actually, defining this move 19.f6 - in principle - afterwards by CLOSER look, I find that it CONTINUES to keep Blacks position in the `state` of DISHARMONY (it`s already not-so-well coordinated), while at the SAME TIME increasing mobility of Whites pieces. 20 years ago, when I was still playing, I would have HARDLY found (or dared to play) this move in the OTB-game. Now, after "rewarming" my obsessive interest towards Chess for some strange, obscure, abstruse reasons, I look things from slightly different angles. Maybe little -just little- bit more understanding - and this only maybe. Naturally, some moves are MUCH nore hard to find during an actual HUMAN-game than afterwards. This is useful to accept, specially regarding computer-analysis. Anyhow, perhaps 19.f6 (in this particular position) is -after all- an excellent move. |
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Jan-03-10
 | | chrisowen: Back once again for the sunday show. The trap he's setting is the high flying 19.f6! Qxf6 20. Bxh7! when the bishop breathes fire on f5 and
the knight cannons the queen. 19.h3 is also a tight rope which Fruit juggles between and rates big. Top it off with Bc8 rearranges the aimless unit for now but Miles is clowning around with Bxc8 Rxc8 Qxa6 knowing that blacks pawns are tumbling down. F6 is a knife thrown in for good measure, Miles then performs wonders with his piece acrobatics. |
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| Jan-03-10 | | johnlspouge: Sunday (Insane):
Miles vs Z Mestrovic, 1990 (19.?) White to play and win.
Material: Even. The Black Ke8 has 3 legal moves. The puzzle is a repeat. The natural candidate 19.h3 leads to: 19.h3 Qxh3 [else, drop at least a P to 20.Qxe5 if Ng4 moves] 20.Rh1 Qxg3 21.Rdg1 Qf4 [note: Rg1 pins Ng4 to Rg8]
22.Rh4 (threatening 23.Rhxg4)
22…h5, and Black survives.
The variation can be repaired with 19.f6.
Candidates (19.): f6
19.f6 (threatening 20.fxe7, stranding Ke8 in the center) (1) 19…exf6 20.h3 Qxh3 21.Rh1 Qxg3 22.Bxh7 (threatening 23.Bf5 or 23.Rdg1) 22…Rg5 23.Rdg1 Qf4 24.Rh4
Black no longer has the resource 24…h5 to protect Ng4. (2) 19…Nxf6 20.Qxe5 (threatening 21.Qxe7#)
White wins at least a P, with central control and an aggressive position against the Black Ke8. (3) 19…O-O-O 20.Bxa6
White regains the P, with more to come and an attack on the Black Kc8. I missed the game defense, as usual. |
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| Jan-03-10 | | cyclon: <johnlspouge:3) 19…(f6) O-O-O 20.Bxa6 White regains the P, with more to come and an attack on the Black Kc8.> Why not 20.Bf5+ INSTEAD? If -Kb8 then 21.fxe7 R- 22.Bxg4 winning a piece in better position (20.Bf5+ e6 21.dxe6 is equally awful for Black). |
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| Jan-03-10 | | CHESSTTCAMPS: I recall that this showed up as a 3 1/2 star puzzle very recently, but I didn't have much time to work on it that day and never posted or checked the outcome. Material is even, but the conventional wisdom should be that white's centralized, more developed force should smash through black's eccentric wing development and uncastled king. But this is easier said than done. From the beginning, I felt that the right idea must be: 19.h3!
Offering a pawn to tempo and/or trap black's queen. If 19... N-moves, 20.Qxe5 and white should cruise to a win. However, after 19... Qxh3, white has several interesting and forcing continuations, requiring a lot of analysis to determine which is best: A) 20.Rh1 Qxg3 21.Rdg1 Qf4 22.Rh4 h5 23.Rxh5
A.1) 21.Ne4
A.2) 22.Rxh7
B) 20.Ne4 Qh6 (forced, to avoid losing Q for R) 21.Rh1 Rg6 22.f6?! I still do not have a clear win, but I like A (mainline), in view of the cross-pin threat Rh4 winning a piece. If now: A.a) 23... O-O-O? 24.Rh4 Nf6 25.Rxf4 Rxg1+ 26.Rf1 wins Q for a rook A.b) 23... Nxf6 24.Rxg8+ Nxg8 25.Rh8 O-O-O (Kf1 26.Qg2 wins the N) 26.Bxa6 and white appears to be better. Black may also be alive after 25... Kd7. That's all I have time for - time to check.
The closest I ever got to the late, great Miles was an adjacent lower board in the 3rd or 4th round the 1975 Manchester Congress. If memory serves, I finished 3 1/2 out of 5 (the weekend that Arthur Ashe won Wimbledon), only 1/2 point below Miles's final score, but that was not one of his better results. |
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| Jan-03-10 | | CHESSTTCAMPS: 19.f6 also occurred to me, but I didn't see a convincing continuation. Very challenging. |
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| Jan-03-10 | | sfm: A very f6tive continuation. |
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| Jan-03-10 | | sfm: Same Mestrovic could also sit at the other site of the table. Here is crushes one of the great.
Z Mestrovic vs Polugaevsky, 1972 |
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| Jan-03-10 | | johnlspouge: < <cyclon> wrote: <johnlspouge:3) 19…(f6) O-O-O 20.Bxa6 White regains the P, with more to come and an attack on the Black Kc8.> Why not 20.Bf5+ INSTEAD? > Hi, <cyclon>. You are quite correct that 20.Bf5 is <much> stronger than 20.Bxa6. Nowadays, I am usually content to show that a move is losing, rather than wasting time in a grinding analysis to find the best response, but the difference between 20.Bf5+ and 20.Bxa6 is too large to ignore. Thanks. |
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| Jan-03-10 | | Mate Hunter: This puzzle was first used in Nov-28-09. I wouldn't say it's bad some puzzles get recycled, since that makes one remember the characteristic patterns better. |
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| Jan-03-10 | | VincentL: I have been looking at this "insane" position for some time. The moves that come to mind
are h3, Bb5+ and f6.
(a) 19. h3
Now if 19....Nf6 20. Qxe5 and black will be mated or lose material. e.g. 20....Qf8 21. Qxc7
and further material loss in the next moves.
So black must continue 24.....Qxh3. Now 25. Rh1 Qxf3 (only move to save the Queen) 26. Rdg1
Qf4 (again the only move) 27. Rh4 h5 (Qe3 loses the knight). If white plays 28. Rxh5
then 28.....Nf6 appears to hold. If 29. Rf1, Qb4, and although white is positionally far
superior, he is actually down a pawn.
(b) 19. Bb5+
Supposing that black accepts the sacrifice, we have
19....axb5 20. Nxf5. Now after O-O-O (assuming it can be legally played) 21. Qc4 Rd2
and white cannot make further progress (22. d6 c6)
(c) 19. f6
19....Nxf6 Qxe5 O-O-O (again, assuming it is legal) 20. Qxe7 Bxd5. Material is equal. I am missing something. |
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| Jan-03-10 | | VincentL: Well, Miles played 19. f6, mopped up a few pawns in the following moves, and black had to resign. Isn't 19....Nxf6, or perhaps 19....exf6 better than capture by the queen? Does white win against these moves? |
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| Jan-03-10 | | Nullifidian: The first move I saw in the position was...
19. ♙f6
Threatening ♙fxe7 and keeping the king in the middle of the board, as 19... 0-0-0?? drops the knight after 20. ♙fxe7 ♖de8 21. ♗f5+ ♔b8 22. ♗xg4. After 19... ♙exf6, I'd follow up with 20. ♙h3 ♕xh3 21. ♖h1 ♕xg3 22. ♘e4 ♕f4 23. ♖df1 ♕e3 24. ♘f6+ ♔e7. Now, because I prefer to simplify in favorable positions, I'd play 25. ♘xg4, practically forcing 25... ♕xe2 26. ♗xe2 ♗xd5 27. ♖xh7 ♖g5 28. ♘h6 ♖f8 29. ♗xa6. White is up a minor piece for a pawn, and should win easily. The other possible, but I think slightly worse, continuation is 19... ♕xf6. I'd play 20. ♗xh7 ♖g7 21. ♘e4 ♕h6 22. ♗f5
Now Black has the option of playing 22... ♕h5, but is losing after 23. ♖f1 ♔d8 (I couldn't see any better move) 24. ♙h3! ♘f6 25. ♙g4! ♕h8 (Black's queen is equally useless on the h4 square) 26. ♙d6 ♘d5 27. ♙dxe7 ♔xe7 28. ♙c4 Black's main alternative at move 22, which is better, but not by much, is 22... ♗c8. 23. ♗xc8 ♖xc8 follow naturally and then 24. ♕xa6 (threatening ♕xc8#) ♔d8 25. ♙h4 (supporting ♘g5 and threatening ♘xf7+ and ♘e6+) and now Black is out of good moves. Most of the variations involve losing the exchange with ♘g5 ♖xg5 ♙hxg5. |
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| Jan-03-10 | | WhiteRook48: i just had to be random- 19 Bb5+?! |
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| Jan-03-10 | | Samagonka: Too hard for me but I enjoyed reading the analysis, especially the ones from <David 2009> and <Once>. Keep on with it... |
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| Jan-03-10 | | cyclon: <Nullifidian:> You had pretty good analysis. |
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| Jan-03-10 | | turbo231: Computers are in another world. Rybka's first move was h2h3 |
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| Jan-03-10 | | hulkweazel: I'm a patzer but I don't think 19 Bb5 is losing, it seems relatively even but I may be wrong. Play continues 19...axb5 20. Rd4 Qh5 21. Rxg4 Rxg4 22. Qxe5 0-0-0 23. Nxb5 Rd7 and it seems to stall from there but white up two pawns. Instead of retaking the pawn after the Bishop sac, the intent is to target the knight on g4. The pawn can't capture the rook when it moves up to d4 because Qxe7#. Anyway this may not be the best move but I don't think it's losing? |
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| Jan-03-10 | | turbo231: Don't you love a Queen against 2 Rooks, with equal pawns game? |
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| Jan-03-10 | | David2009: <hulkweazel: I'm a patzer but I don't think 19 Bb5 is losing, it seems relatively even but I may be wrong.
Play continues 19...axb5 20. Rd4 Qh5 21. Rxg4 Rxg4 22. Qxe5 0-0-0 23. Nxb5 Rd7
and it seems to stall from there but white up two pawns>.
Crafty (on-line chess engine) defending plays 20 Qxh2 (instead of 20 Qh5) ending at least a pawn up.
On-line link to the puzzle position (Miles v Mestrovic 1990,19?)
click for larger view http://www.chessvideos.tv/endgame-t...
You are white, drag and drop the move you want to make. <Samagonka>: thanks! |
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| Jan-03-10 | | MaxxLange: I think you have to find the 19...e6 20 h3! Qxh3 21 Rh1 line to get the full point. I missed that. Junior 8 says that 20 Bf5 and 20 Be4 are also winning, but 20 h3! is the most forcing bust to 19...e6 |
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| Jan-03-10 | | sethoflagos: This 'puzzle' seems to have scotched the tactics archive which currently has nothing beyond 27th November last year |
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| Jan-03-10 | | zenpharaohs: OK I looked at 19 h3 for a long time, and then settled on 19 f6. This is another one where I saw a move or two, and some themes, but I can't say I really figured this one out. A couple hours of letting Rybka 3 stew over it.
Rybka 3, at a depth of 19 ply, favors
19 h3 Qxh3
20 f6 Qh5
21 Rh1 Qg5
with a value of +1.88
and next best is
19 f6 Nxf6
20 Bf5 Nd7
21 Qc4 Kd8
with a value of +1.40
I'll just have to take Rybka's word for it, since it's not that clear to me even having played around with it. |
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| Jan-03-10 | | Smothered Mate: For the first 4 ply, you could also listen to
Hiarcs 12.1 d=21
(+2.32) 19. h3 Qxh3 20. f6 Qh5 21. fxe7 Kxe7 22. Rh1 (+1.55) 19. f6 Nxf6 20. Bf5 Nd7 21. Bxd7 Kxd7 22. Qxe5 Qg5 23. Qe4 h5 24. Qa4+ Kd8 |
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Jan-04-10
 | | LIFE Master AJ: Any explanation from CG why this puzzle was repeated??????? |
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