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Subject: Re: Another tough one ...

Author: Ferdinand S. Mosca

Date: 04:42:28 12/22/00

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On December 21, 2000 at 18:03:08, Howard Exner wrote:

>On December 21, 2000 at 12:45:17, Bertil Eklund wrote:
>
>>On December 21, 2000 at 07:11:47, Ferdinand S. Mosca wrote:
>>
>>>On December 21, 2000 at 02:03:12, Jim Monaghan wrote:
>>>
>>>>[D]r1b3k1/pp1n3p/2pbpq1r/3p4/2PPp1p1/PP2P1P1/1BQN1P1P/3RRBK1 b - - 0 17
>>>>
>>>>Maroczy-Tartakower, 1922 bm 17...Rxh2!!
>>>>A human GM would consider this first and only if it didn't
>>>>work would alternatives be examined.  The engines don't even
>>>>consider it briefly in their candidates ... Interesting. Not that
>>>>difficult to "see", tough to verify though ...
>>>>
>>>>Crafty 17.14
>>>>12->   8:12  -0.47   1. ... Qf5 2. Bg2 Rf6 3. Re2 e5 4.
>>>>                                    Nf1 exd4 5. exd4 b6 6. cxd5 cxd5 7.
>>>>                                    Ne3 Qh5 <HT>
>>>>
>>>>LG2000v2.9a
>>>>
>>>>12 58 34388 51749022 f6f5 f1g2 d6e7 e1e2 h6f6 g1h1 f6f7 a3a4 b7b6 c4d5 c6d5
>>>>
>>>>
>>>>This position has probably been posted before. Sorry in advance if it was:-)
>>>>Anybody's program see this?
>>>>
>>>>Jim
>>>
>>>I think the move 17...Rxh2 is still premature. The bishop on c8, the rook in a8
>>>and the knight in d7 have to be improved first.
>>>
>>>one variation is:
>>>1...Rxh2?! 2.Kxh2 Qxf2+ 3.Kh1 Qxg3 4.Re2 and black cannot sustain his attack,
>>>its undeveloped pieces can not easily support a pawn storm on white's king
>>>position. Besides by eliminating white's pawns in f, g and h, black's king
>>>position is also in trouble because of white's rooks that is not difficult to
>>>develop.
>>>
>>>Dinan
>>
>>Hi!
>>
>>I believe it's winning (with the help of Gambit) instead 3.-Nf6 4.Rc1-Qxg3
>>5.Nb1-Qh4+ 6.Kg1-g3 7.Qg2-Ng4 8.Qh3-Qg5 9.Rc2-Bd7! 10.Rg2-Rf8 11.Rxg3-Bxg3
>>12.Qxg3-Rf3 13.Qg2-Qh4 14.Re2-Rg3 15.Qxg3-Qxg3+  and game over.
>>
>>No I don't think any program finds 17.-Rxh2, at least not in reasonable time.
>
>Here is the game score. I believe also that black will win this, even if better
>defensive moves are found. Tartakower in the game has many threats
>
>1. positioning the Knight on h5 via f6
>2. playing e5 to activate the bishop
>3. Bringing the Rook into play
>4. Having the g and h pawns advance if necessary
>
>In the meantime, white's pieces are difficult to coordinate. They
>are cramped and are getting in the way of each other.
>
>All speculative stuff, as detailed analysis would be lengthy.
>Computers will assist in finding better defensive moves, but they may also come
>up with better attacking moves for Black.
>
>[Event "Teplitz-Schoenau"]
>[Site "Teplitz-Schoenau"]
>[Date "1922.??.??"]
>[Round "?"]
>[White "Maroczy, G."]
>[Black "Tartakower, S."]
>[Result "0-1"]
>[WhiteElo "?"]
>[BlackElo "?"]
>[ECO "A40"]
>
>1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. a3 Be7 5. e3 O-O 6. Bd3 d5 7. Nf3 c6 8.
>O-O Ne4 9. Qc2 Bd6 10. b3 Nd7 11. Bb2 Rf6 12. Rfe1 Rh6 13. g3 Qf6 14. Bf1
>g5 15. Rad1 g4 16. Nxe4 fxe4 17. Nd2 Rxh2 18. Kxh2 Qxf2+ 19. Kh1 Nf6 20.
>Re2 Qxg3 21. Nb1 Nh5 22. Qd2 Bd7 23. Rf2 Qh4+ 24. Kg1 Bg3 25. Bc3 Bxf2+
>26. Qxf2 g3 27. Qg2 Rf8 28. Be1 Rxf1+ 29. Kxf1 e5 30. Kg1 Bg4 31. Bxg3
>Nxg3 32. Re1 Nf5 33. Qf2 Qg5 34. dxe5 Bf3+ 35. Kf1 Ng3+ 0-1

You are right, black here has some plans and threats, but because of its
development, white also has the time to regroup.

Some alternative move to the actual game:
21. Nb1?! [21. Qc3!]
22. Qd2? [22. Bc1!]
25. Bc3?? [25. Rg2]

Dinan




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