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Subject: Re: Zappa @ CCT6 (would be interested to see some other engines here)

Author: Anthony Cozzie

Date: 05:12:30 02/03/04

Go up one level in this thread


On February 02, 2004 at 13:50:36, Robert Hyatt wrote:

>On February 02, 2004 at 13:00:00, Anthony Cozzie wrote:
>
>>On February 02, 2004 at 10:41:38, Albert Silver wrote:
>>
>>>
>>>>Round 8: Zappa - Searcher 1-0
>>>
>>>>A few moves later Zappa was able to get a tactical win with Re6!
>>>>
>>>>[D]1rb2rk1/4R1p1/1pqn1pBp/3p4/5Q2/1NP3PP/6PK/4R3 w - - 0 30
>>>>
>>>>1. Re1-e6 Bc8xe6 2. Nb3-d4 Qc6-c4 3. Qf4xd6 Be6xh3 4. Kh2xh3 Kg8-h8 5. Nd4-e6
>>>>Rf8-g8 6. Qd6-d7 Qc4-c8 7. Qd7xd5 Rb8-a8 8. Qd5-f5
>>>> = (3.58)       Depth: 15/23    00:03:03.90     174729471kN
>>>
>>>A fantastic combination.
>>>
>>>                Albert
>>
>>Note that Zappa played Re6 entirely on eval, not search.  In the position at the
>>end of the PV, white has BN v RP.  Zappa is giving white almost 3 pawns worth of
>>positional compensation due to very agressively placed Ne6, Re7, and the black
>>king being in danger.
>>
>>anthony
>
>
>Crafty finds it quickly, loses it, then comes back to it again:
>
>               12     1.87   1.49   1. Be8 Rxe8 2. Rxe8+ Nxe8 3. Qxb8 Kf7
>                                    4. Re3 Nd6 5. Nd4 Qc5 6. Qa7+ Bb7 7.
>                                    Kg1 Kg8 8. Re7 Qxc3 9. Qxb6 (s=5)
>               12->   3.62   1.49   1. Be8 Rxe8 2. Rxe8+ Nxe8 3. Qxb8 Kf7
>                                    4. Re3 Nd6 5. Nd4 Qc5 6. Qa7+ Bb7 7.
>                                    Kg1 Kg8 8. Re7 Qxc3 9. Qxb6 (s=6)
>               13     4.11   1.49   1. Be8 Rxe8 2. Rxe8+ Nxe8 3. Qxb8 Kf7
>                                    4. Re3 Nd6 5. Nd4 Qc5 6. Qa7+ Bb7 7.
>                                    Kg1 Kg8 8. Re7 Qxc3 9. Qxb6 (s=5)
>               13     9.37   1.82   1. R1e6 Bxe6 2. Nd4 Qc4 3. Qxd6 Bxh3
>                                    4. Kxh3 Kh8 5. Ne6 Rg8 6. Rxg7 Rxg7
>                                    7. Qxb8+ Rg8
>               13->   9.37   1.82   1. R1e6 Bxe6 2. Nd4 Qc4 3. Qxd6 Bxh3
>                                    4. Kxh3 Kh8 5. Ne6 Rg8 6. Rxg7 Rxg7
>                                    7. Qxb8+ Rg8 (s=6)
>               14     9.88     --   1. R1e6
>               14    10.90   1.22   1. R1e6 Bxe6 2. Nd4 Qc4 3. Qxd6 Bxh3
>                                    4. Kxh3 Kh8 5. Ne6 Rg8 6. Rc7 Qf1 7.
>                                    Rxg7 Qh1+ 8. Kg4 Qxg2 9. Rxg8+ Rxg8
>                                    (s=5)
>               14    17.87   1.64   1. Be8 Rxe8 2. Rxe8+ Nxe8 3. Qxb8 Kf7
>                                    4. Re3 Nd6 5. Nd4 Qc5 6. Qa7+ Nb7 7.
>                                    Qa4 Nd6 8. Qd1 Nf5 9. Qh5+ Kg8 (s=2)
>               14->  21.68   1.64   1. Be8 Rxe8 2. Rxe8+ Nxe8 3. Qxb8 Kf7
>                                    4. Re3 Nd6 5. Nd4 Qc5 6. Qa7+ Nb7 7.
>                                    Qa4 Nd6 8. Qd1 Nf5 9. Qh5+ Kg8 (s=6)
>               15    25.28   1.62   1. Be8 Rxe8 2. Rxe8+ Nxe8 3. Qxb8 Kf7
>                                    4. Re3 Nd6 5. Nd4 Qc5 6. Qa7+ Nb7 7.
>                                    Rf3 Kg8 8. Qb8 Nd6 9. Ne6 Qc6 (s=5)
>               15    41.22   1.77   1. R1e6 Bxe6 2. Nd4 Qc4 3. Qxd6 Bxh3
>                                    4. Kxh3 Kh8 5. Ne6 Rg8 6. Bf7 Rgc8
>                                    7. Nxg7 Qxc3 8. Bxd5 (s=2)
>               15->  50.17   1.77   1. R1e6 Bxe6 2. Nd4 Qc4 3. Qxd6 Bxh3
>                                    4. Kxh3 Kh8 5. Ne6 Rg8 6. Bf7 Rgc8
>                                    7. Nxg7 Qxc3 8. Bxd5 (s=5)
>               16    59.27   1.52   1. R1e6 Bxe6 2. Nd4 Qc4 3. Qxd6 Bxh3
>                                    4. Kxh3 Kh8 5. Ne6 Rg8 6. Nxg7 Qf1
>                                    7. Kh2 Rbc8 8. Bf5 Rxc3 9. Qxf6 (s=4)
>
>
>waiting a little longer finds
>
>               17     7:43   1.95   1. Nd4 Qc5 2. R1e6 Rb7 3. Rxb7 Nxb7
>                                    4. Rc6 Qe7 5. Rc7 Qd6 6. Nc6 Qxf4 7.
>                                    gxf4 Kh8 8. Ne7 Nd6 9. Rc6 Rd8 10.
>                                    Rxd6 Rxd6 11. Nxc8 (s=4)
>
>as even better, still with the same theme and although the first two white moves
>are transposed, Nd4 gets in without the rook being ripped first...

I let zappa run overnight here, currently it looks like:

1. Re1-e6 Bc8xe6 2. Nb3-d4 Qc6-c4 3. Qf4xd6 Be6xh3 4. Kh2xh3 Kg8-h8 5. Nd4-f5
Rf8-d8 6. Qd6-e6 Qc4-c8 7. Qe6-f7 Rd8-g8 8. Kh3-h2 d5-d4 9. Nf5xh6 d4xc3 10.
Qf7-a2 Rg8-f8 11. Nh6-f7 Rf8xf7
 = (5.02)       Depth: 19/36    06:44:41.82     -1240831095kN
1. Re1-e6++
 + (5.27)       Depth: 20/38    08:51:43.41     -2075654824kN

anthony



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