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Subject: Re: Position that separates programs from strong GM Ponomariov (2616)

Author: Bernhard Bauer

Date: 23:39:14 03/13/00

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On March 13, 2000 at 23:33:48, Mark Ryan wrote:

>On March 13, 2000 at 23:28:30, Mark Ryan wrote:
>
>>On March 13, 2000 at 23:22:53, Mark Ryan wrote:
>>
>>>Kalka versus Ponomariov; Bad Wiessee, Germany, 1999.
>>(Let me see if I can this diagram to show.)
>
>[D]3r3k/2n1p2p/2q1Pb2/1p1p4/2p5/2N4P/1PP1Q1P1/1B2R1K1 b - -
>
>>>
>>>"28...Bc3!  Conclusively incarcerating the white bishop" (Ponomariov, New In
>>>Chess magazine, 1999 Number 8, page 79).  White resigned after another eight
>>>moves; though material remained equal, his bishop was useless.  None of my
>>>programs played 28...Bc3.
>>>
>>>Mark

May be you don't have Crafty -:)))
This position looks to me much simpler than the header may suggest.
Black simply goes for the white pawn on e6 and eliminates therefor the
white knight.
Crafty needs less than 4 sec to see ...Bxc3.

         (3)    8->   2.20   1.04   1. ... Bd4+ 2. Kh1 Rf8 3. Na2 Rf6 4.
                                    Nb4 Qc5 5. c3 Rxe6
         (2)    9     3.29   1.04   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rxe6
                9->   4.76   1.04   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rxe6
               10     5.84   1.14   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rxe6 7.
                                    Qd4+ Kg8
         (2)   10->   9.29   1.14   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rxe6 7.
                                    Qd4+ Kg8
               11    14.17   1.09   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rg6 7. Rf1
                                    Qxe6
         (4)   11->   1:03   1.09   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Rf8
                                    4. Qe3 Qd6 5. g4 Rf6 6. g5 Rg6 7. Rf1
                                    Qxe6
         (3)   12     1:19   1.17   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Rf1 Nxe6 5. Qh5 Rg8 6. Rf2 Nf4 7.
                                    Qf5 e5 8. Kg1
         (2)   12->   2:03   1.17   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Rf1 Nxe6 5. Qh5 Rg8 6. Rf2 Nf4 7.
                                    Qf5 e5 8. Kg1
               13     2:46   1.27   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. g4 Rf6 6. g5 Rxe6 7.
                                    Qd4+ Kg8 8. Rf1 Re2 9. Kg1
               13->   3:46   1.27   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qe3 Rf8 5. g4 Rf6 6. g5 Rxe6 7.
                                    Qd4+ Kg8 8. Rf1 Re2 9. Kg1
               14     4:56   1.32   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qg4 Rf8 5. g3 Rf6 6. Kh2 Nxe6 7.
                                    Re3 h6 8. Kg1 Qc5 9. Qe2
               14->   7:41   1.32   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qg4 Rf8 5. g3 Rf6 6. Kh2 Nxe6 7.
                                    Re3 h6 8. Kg1 Qc5 9. Qe2
               15    10:42   1.39   1. ... Bd4+ 2. Kh1 Bxc3 3. bxc3 Qd6
                                    4. Qg4 Rf8 5. g3 Rf6 6. Kg2 Nxe6 7.
                                    Re3 Qc6 8. Kg1 <HT>
              time=15:00  cpu=200%  mat=0  n=389219181  fh=89%  nps=432288
              ext-> checks=19244062 recaps=1044239 pawns=486671 1rep=2462350
              predicted=0  nodes=389219181  evals=84759670
              endgame tablebase-> probes done=0  successful=0
              SMP->  split=1124  stop=253  data=8/64  cpu=30:02  elap=15:00

Kind regards
Bernhard



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