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.
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