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Subject: Re: diagram

Author: Bernhard Bauer

Date: 06:08:14 02/24/00

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On February 24, 2000 at 02:00:35, Jeremiah Penery wrote:

>On February 24, 2000 at 00:10:12, Terry Presgrove wrote:
>
>>Hopefully this will work.
>>
>>
>> [D]4Rr1k/2pb2p1/5n1p/5p2/2PPpP1P/2pnP1P1/3N2R1/3N2KB b - - 0 1 bm c3c2
>
>My modified Crafty doesn't consider anything but c2:
>
> 1     0.00  -1.10   1. ... Rxe8 2. Nxc3
> 1->   0.02  -1.10   1. ... Rxe8 2. Nxc3
> 2     0.02  -1.10   1. ... Rxe8 2. Nxc3
> 2->   0.05  -1.10   1. ... Rxe8 2. Nxc3
> 3     0.05  -0.90   1. ... Rxe8 2. Nxc3 Kh7
> 3     0.07     ++   1. ... c2!!
> 3     0.07   0.07   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Qxc4
> 3->   0.09   0.07   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Qxc4
> 4     0.10     --   1. ... c2
> 4     0.12   0.07   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Qxc4
> 4->   0.14   0.07   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Qxc4
> 5     0.21     --   1. ... c2
> 5     0.24  -0.01   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Qxc4 5. Nd2
> 5->   0.28  -0.01   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Qxc4 5. Nd2
> 6     0.36     ++   1. ... c2!!
> 6     0.42   0.44   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Ne1 5. Rh2 Qxc4
> 6->   0.50   0.44   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Ne1 5. Rh2 Qxc4
><snip>
>13->   1:07   1.17   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
>                     4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 Nxe4
>                     7. Bxe4 fxe4 8. Rxc2 Qxc2 9. Rf7 Be6
>                     10. Rxc7 Bxc4
>14     1:50     ++   1. ... c2!!
>
>And for some reason there was a tree-explosion here, and the fail-high hadn't
>resolved even after 100 minutes.  I'll re-run this later tonight and let it
>resolve, to see what's happening.

Here is what I get with Crafty17.8 with modified extensions:

               13->  13.72   1.22   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 Nxe4
                                    7. Bxe4 fxe4 8. Rxc2 Qxc2 9. Rf7
               14    22.02   1.16   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 Nxe4
                                    7. Bxe4 fxe4 8. Rxc2 Qxc2 9. Rf7 Qa4
               14->  25.85   1.16   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 Nxe4
                                    7. Bxe4 fxe4 8. Rxc2 Qxc2 9. Rf7 Qa4
               15    55.80   1.27   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 fxe4
                                    7. Rxf6 Nxe3 8. Bxe4+ Kg8 9. Kf2 Ng4+
                                    10. Ke2 Nxf6
               15->   1:05   1.27   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 fxe4
                                    7. Rxf6 Nxe3 8. Bxe4+ Kg8 9. Kf2 Ng4+
                                    10. Ke2 Nxf6
               16     4:04     ++   1. ... c2!!
               16    11:37   2.42   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Bg2 Nxe3 7.
                                    Bh3 Nxc4 8. Rxf6 gxf6 9. Nxe4 fxe4
                                    10. Bxd7 e3
               16->  12:00   2.42   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Bg2 Nxe3 7.
                                    Bh3 Nxc4 8. Rxf6 gxf6 9. Nxe4 fxe4
                                    10. Bxd7 e3
               17    14:47   2.13   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Bg2 Nxe3 7.
                                    Bh3 Nh5 8. Nh1 Nxf1 9. Bxf1 Qe3+ 10.
                                    Rf2 Qxd4 11. Rd8 e3
               17->  16:17   2.13   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Bg2 Nxe3 7.
                                    Bh3 Nh5 8. Nh1 Nxf1 9. Bxf1 Qe3+ 10.
                                    Rf2 Qxd4 11. Rd8 e3
               18    23:59   2.43   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 Nxe4
                                    7. Bxe4 fxe4 8. Rxc2 Qxc2 9. f5 Qxc4
                                    10. f6 Be6 11. fxg7 Kxg7 12. Rf4
               18->  27:08   2.43   1. ... c2 2. Rxf8+ Kh7 3. Nf2 c1=Q+
                                    4. Nf1 Ne1 5. Rh2 Nc2 6. Nxe4 Nxe4
                                    7. Bxe4 fxe4 8. Rxc2 Qxc2 9. f5 Qxc4
                                    10. f6 Be6 11. fxg7 Kxg7 12. Rf4
              time=30:00  cpu=200%  mat=-5  n=944646505  fh=19%  nps=524599
Kind regards
Bernhard



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