Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: The Baron

Author: Robert Hyatt

Date: 13:12:22 01/21/05

Go up one level in this thread


On January 21, 2005 at 13:03:11, Peter Skinner wrote:

>On January 21, 2005 at 12:39:00, Richard Pijl wrote:
>
>>On January 21, 2005 at 03:47:50, Peter Skinner wrote:
>>
>>>In Polgar - Adams game today, Polgar missed 35. Bf2. Can your program find it?
>>>
>>>[d]1q4k1/5pp1/3pbn1p/b7/2r1PP2/2N1B2P/1PQ3P1/1B2R1K1 w - - bm Bf2
>>>
>>>Peter
>>
>>The Baron on P4-2.4 finds and keeps it in 14 seconds:
>>
>> ply       time        nodes   score  pv
>>  4( 6).   0:00.16     15463   +0.64  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6
>>  5( 7)&   0:00.22     25928   +0.76  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Qc2-d2
>>  5( 9).   0:00.33     41101   +0.76  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Qc2-d2
>>  6(12)&   0:00.60     74020   +0.33  Be3-f2 Qb8-c7 Re1-e3 Ba5-b6 Re3-e2
>>                                      Bb6-d4
>>  6(12)&   0:01.31    167651   +0.37  Be3-d2 Qb8-a7 Kg1-f1 Qa7-e7 Bb1-a2
>>                                      Ba5-b6 Bd2-e3
>>  6(12)&   0:01.42    188198   +0.56  f4-f5 Be6-d7 Be3-f2 Rc4-b4 Re1-e2
>>                                      Ba5-b6
>>  6(12).   0:01.59    229447   +0.56  f4-f5 Be6-d7 Be3-f2 Rc4-b4 Re1-e2
>>                                      Ba5-b6
>>  7(13)&   0:01.81    281747   +0.57  f4-f5 Be6-d7 Be3-f2 Ba5-b6 Bb1-a2
>>                                      Bd7-a4 Qc2-d2
>>  7(13).   0:02.47    430626   +0.57  f4-f5 Be6-d7 Be3-f2 Ba5-b6 Bb1-a2
>>                                      Bd7-a4 Qc2-d2
>>  8(12)&   0:03.35    637751   +0.50  f4-f5 Be6-d7 Qc2-d2 Rc4-b4 Re1-e2
>>                                      Ba5-b6 Be3-f2 Bb6-c5
>>  8(14).   0:05.65   1179098   +0.50  f4-f5 Be6-d7 Qc2-d2 Rc4-b4 Re1-e2
>>                                      Ba5-b6 Be3-f2 Bb6-c5
>>  9(14)&   0:08.29   1802903   +0.34  f4-f5 Be6-d7 Be3-f2 Bd7-c6 Qc2-d3
>>                                      Rc4-b4 Qd3-a6 Ba5-b6 Bf2xb6 (Rb4xb6)
>>  9(15)&   0:13.89   3118363   +0.51  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Qc2-d2
>>                                      Be6-c4 Bb1-d3 Bb6xf2 Re2xf2 Bc4xd3
>>  9(15).   0:19.22   4416225   +0.51  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Qc2-d2
>>                                      Be6-c4 Bb1-d3 Bb6xf2 Re2xf2 Bc4xd3
>> 10(16)&   0:30.64   7052696   +0.58  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Bf2xb6
>>                                      Qb8xb6 Kg1-h2 Qb6-c5 Qc2-d1 Qc5-b6 Qd1-d2
>> 10(16).   0:47.18  11133664   +0.58  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Bf2xb6
>>                                      Qb8xb6 Kg1-h2 Qb6-c5 Qc2-d1 Qc5-b6 Qd1-d2
>> 11(18)&   1:13.10  17189368   +0.58  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Kg1-h2
>>                                      Be6-c4 Re2-d2 Bb6xf2 Rd2xf2 Qb8-c8 Qc2-d1
>> 11(18).   1:39.08  23688594   +0.58  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Kg1-h2
>>                                      Be6-c4 Re2-d2 Bb6xf2 Rd2xf2 Qb8-c8 Qc2-d1
>> 12(18)&   2:45.76  39074017   +0.51  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Qc2-d2
>>                                      Be6-c4 Bb1-d3 Bb6xf2 Re2xf2 Bc4xd3 Qd2xd3
>>                                      Rb4xb2 Rf2xb2
>> 12(19).   4:40.17  65636194   +0.51  Be3-f2 Rc4-b4 Re1-e2 Ba5-b6 Qc2-d2
>>                                      Be6-c4 Bb1-d3 Bb6xf2 Re2xf2 Bc4xd3 Qd2xd3
>>                                      Rb4xb2 Rf2xb2
>
>
>Wow that is pretty amazing. According the post game analysis, Bf2 is the winning
>move that Polgar missed.
>
>Peter


I don't believe this is a remarkable move for a computer to find.  IE here is
Crafty on my dual xeon:

                6     0.10   0.47   1. f5 Bd7 2. Ba2 Bxc3 3. bxc3 Rxe4
                                    4. Bd5
                6->   0.12   0.47   1. f5 Bd7 2. Ba2 Bxc3 3. bxc3 Rxe4
                                    4. Bd5 (s=2)
                7     0.19   0.36   1. f5 Bd7 2. Bd2 Bb6+ 3. Kh1 Bf2 4.
                                    Ba2 Ba4
                7->   0.35   0.36   1. f5 Bd7 2. Bd2 Bb6+ 3. Kh1 Bf2 4.
                                    Ba2 Ba4 (s=2)
                8     0.44   0.35   1. f5 Bd7 2. Bd2 Bb6+ 3. Kh1 Bf2 4.
                                    Ba2 Ba4 5. Qd3
                8     1.06   0.59   1. Bf2 Rb4 2. Re2 Bb6 3. Rd2 Bxf2+
                                    4. Rxf2 Qc7 5. Rd2 Qc5+ 6. Kh1
                8->   1.06   0.59   1. Bf2 Rb4 2. Re2 Bb6 3. Rd2 Bxf2+
                                    4. Rxf2 Qc7 5. Rd2 Qc5+ 6. Kh1
                9     1.90   0.67   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Bxf2+ 5. Rxf2 Qe8 6. Bc2
                9->   2.13   0.67   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Bxf2+ 5. Rxf2 Qe8 6. Bc2
               10     2.90   0.59   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Bxf2+ 5. Rxf2 Qe8 6. Bc2 Qe7
               10->   3.85   0.59   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Bxf2+ 5. Rxf2 Qe8 6. Bc2 Qe7
               11     7.37   0.66   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Bxf2+ 5. Rxf2 Qc7 6. Bc2 Qc5 7.
                                    Ba4
               11->   9.49   0.66   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Bxf2+ 5. Rxf2 Qc7 6. Bc2 Qc5 7.
                                    Ba4
               12    15.52   0.65   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Nh5 5. Bxb6 Qxb6+ 6. Rf2 Qd4 7.
                                    Bc2
               12->  26.17   0.65   1. Bf2 Rb4 2. Re2 Bb6 3. Qc1 Bc4 4.
                                    Rd2 Nh5 5. Bxb6 Qxb6+ 6. Rf2 Qd4 7.
                                    Bc2 (s=2)


takes a whole second to see that move, which doesn't mean much.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.