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Subject: Re: Example of using chess engine in finding crushing opening novelty...

Author: Renze Steenhuisen

Date: 03:22:51 01/19/06

Go up one level in this thread


On January 19, 2006 at 02:31:40, Renze Steenhuisen wrote:

>On January 18, 2006 at 22:25:16, Rick Hagen wrote:
>
>>We reach the following position:
>>[D]Q4b1r/4kp1p/B2p4/4pb2/1q1n4/N7/PP3PPP/R4K1R b - - 0 18
>>
>>I found 23 games in my DB.
>>The following moves were played:
>>18...Qd2   18x
>>18...Qxb2   4x
>>18...Kf6    1x
>
>Hi Rick!
>
>Crafty on a P4 3GHz with 384MB Hash, and 48MB PawnTable:
>
>               12->   1:06   0.97   1. ... Qxb2 2. Qb7+ Qxb7 3. Bxb7 d5
>                                    4. Rd1 Kf6 5. Nb1 Bc2 6. Rc1 Bh6 7.
>                                    Rxc2 Nxc2 8. Bxd5
>               13     1:13   0.79   1. ... Qxb2 2. Qb7+ Qxb7 3. Bxb7 d5
>                                    4. Rd1 Kf6 5. Nb1 Bc2 6. Nc3 Bxd1 7.
>                                    Nxd1 Bb4 8. Ne3 Rd8 9. Nxd5+
>               13     2:40     -1   1. ... Bh6!!
>               13     3:44  -0.01   1. ... Bh6 2. Qxh8 Qd2 3. h4 Bd3+ 4.
>                                    Bxd3 Qxd3+ 5. Kg1 Ne2+ 6. Kf1 Nd4+
>               13->   4:07  -0.01   1. ... Bh6 2. Qxh8 Qd2 3. h4 Bd3+ 4.
>                                    Bxd3 Qxd3+ 5. Kg1 Ne2+ 6. Kf1 Nd4+
>               14     5:17  -0.01   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
>                                    4. Ke1 Rb8 5. Rd1 Nc2+ 6. Nxc2 Bxc2
>                                    7. Rd2 Bb1 8. Rd1 Bc2
>               14->   7:14  -0.01   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
>                                    4. Ke1 Rb8 5. Rd1 Nc2+ 6. Nxc2 Bxc2
>                                    7. Rd2 Bb1 8. Rd1 Bc2

But after a while....

               15    19:04  -0.04   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
                                    4. Ke1 Rb8 5. Rd1 Nc2+ 6. Nxc2 Bxc2
                                    7. Rd2 Bxd2+ 8. Kxd2 Bf5 9. Bd5 Rxb2+
                                    10. Ke3 Be6 11. Bxe6 Kxe6 12. Ra1 d5
               15->  24:55  -0.04   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
                                    4. Ke1 Rb8 5. Rd1 Nc2+ 6. Nxc2 Bxc2
                                    7. Rd2 Bxd2+ 8. Kxd2 Bf5 9. Bd5 Rxb2+
                                    10. Ke3 Be6 11. Bxe6 Kxe6 12. Ra1 d5
               16    34:50  -0.32   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
                                    4. Ke1 Rb8 5. Rd1 Rxb7 6. Rxd3 Rxb2
                                    7. h4 Rxa2 8. Nb1 Re2+ 9. Kf1 Rc2 10.
                                    Rc3 <HT>
               16->  62:51  -0.32   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
                                    4. Ke1 Rb8 5. Rd1 Rxb7 6. Rxd3 Rxb2
                                    7. h4 Rxa2 8. Nb1 Re2+ 9. Kf1 Rc2 10.
                                    Rc3 <HT>
               17    90:22  -0.21   1. ... Bh6 2. Qb7+ Qxb7 3. Bxb7 Bd3+
                                    4. Ke1 Rb8 5. Rd1 Rxb7 6. Rxd3 Rxb2
                                    7. Nc4 Re2+ 8. Kf1 Rxa2 9. g4 Bf4 10.
                                    Kg2 Rc2 11. Ne3 Re2
               17   218:29  -0.28   1. ... Qxb2 2. Qb7+ Qxb7 3. Bxb7 d5
                                    4. Rd1 Kd6 5. Ba6 Kc6 6. Nb1 Bc2 7.
                                    Rc1 Bh6 8. Rxc2+ Nxc2 9. a4 Rb8 10.
                                    Bb5+ Kc5 11. Nc3 Rd8
               17-> 235:10  -0.28   1. ... Qxb2 2. Qb7+ Qxb7 3. Bxb7 d5
                                    4. Rd1 Kd6 5. Ba6 Kc6 6. Nb1 Bc2 7.
                                    Rc1 Bh6 8. Rxc2+ Nxc2 9. a4 Rb8 10.
                                    Bb5+ Kc5 11. Nc3 Rd8

And still searching ....

>So it finds the move as well, and look at its score. Back to near-zero again.
Look even closer and you discover that the score drops even further to black's
advantage.

>Cheers,
>
>Renze

Yeah, Cheers man, you're a cool dude ;-)

Renze



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