Author: J. Wesley Cleveland
Date: 17:27:17 08/01/02
Go up one level in this thread
On August 01, 2002 at 18:59:28, Dann Corbit wrote:
>On August 01, 2002 at 18:52:09, Slater Wold wrote:
>
>>Tested on a dual AMD 1.73Ghz. Crafty 18.15 from Hyatt's FTP.
>>
>>
>>
>>White(1): setboard r1r5/3nbpk1/4qnp1/4p1Bp/1pN1P3/1PP2Q2/4N1PP/3R1R1K b - -
>>Black(1): go
>> clearing hash tables
>> time surplus 0.00 time limit 360:00 (360:00)
>> nss depth time score variation (1)
>>starting thread 1
>> 5 0.12 0.91 1. ... Ra2 2. h3 Bc5 3. Nc1 Rc2
>> 5 0.31 0.82 1. ... Ra6 2. cxb4 Bxb4 3. Ng3 Kg8
>> 4. Kg1
>> (3) 5-> 0.32 0.82 1. ... Ra6 2. cxb4 Bxb4 3. Ng3 Kg8
>> 4. Kg1
>> (2) 6 0.46 0.83 1. ... Ra6 2. h3 bxc3 3. Nxc3 Nc5 4.
>> Bxf6+ Bxf6 5. Nd5 Bg5
>> 6 0.78 0.78 1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
>> 4. Kg1 Ng4
>> 6-> 0.85 0.78 1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
>> 4. Kg1 Ng4
>> 7 1.15 0.86 1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Ra1
>> 4. Nd3 Rxd1 5. Rxd1 Bc3
>> 7 2.98 0.73 1. ... Ra6 2. cxb4 Bxb4 3. Rd3 Kg8
>> 4. Ng3 Bc5 5. Bh6
>> (2) 7-> 3.23 0.73 1. ... Ra6 2. cxb4 Bxb4 3. Rd3 Kg8
>> 4. Ng3 Bc5 5. Bh6
>> 8 4.35 0.74 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Bc5
>> 4. Nd3 Bd4 5. Rb1 Ra2
>> 8-> 5.12 0.74 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Bc5
>> 4. Nd3 Bd4 5. Rb1 Ra2
>> 9 7.96 0.75 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
>> 4. Bh4 Kg8 5. Nd3 Be7 6. Bxe7 Qxe7
>> 9-> 11.03 0.75 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
>> 4. Bh4 Kg8 5. Nd3 Be7 6. Bxe7 Qxe7
>> 10 20.48 0.74 1. ... Ra6 2. h3 Kg8 3. Nd2 bxc3 4.
>> Nxc3 Bc5 5. Nd5 Nh7 6. Bh6 Ra2
>> 10-> 27.43 0.74 1. ... Ra6 2. h3 Kg8 3. Nd2 bxc3 4.
>> Nxc3 Bc5 5. Nd5 Nh7 6. Bh6 Ra2
>> 11 44.68 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Be7
>> 4. Nd3 Nh7 5. Bxe7 Qxe7 6. Qg3 h4 7.
>> Qf2 Kg8
>> (2) 11-> 1:26 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Be7
>> 4. Nd3 Nh7 5. Bxe7 Qxe7 6. Qg3 h4 7.
>> Qf2 Kg8
>> 12 1:52 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
>> 4. Bh4 Nhf6 5. Nd3 Bc3 6. Bg5 Nh7 7.
>> Nf4 exf4 8. Qxc3+
>> (3) 12-> 3:02 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
>> 4. Bh4 Nhf6 5. Nd3 Bc3 6. Bg5 Nh7 7.
>> Nf4 exf4 8. Qxc3+
>> (2) 13 5:11 0.63 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
>> 4. Bh4 Kg8 5. h3 Ndf6 6. Nd3 Bc3 7.
>> Rf2 Bd4 8. Nf4
>> 13-> 5:51 0.63 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
>> 4. Bh4 Kg8 5. h3 Ndf6 6. Nd3 Bc3 7.
>> Rf2 Bd4 8. Nf4
>> 14 16:40 0.70 1. ... Ra6 2. h3 Nc5 3. Rd5 Nfd7 4.
>> cxb4 Bxg5 5. bxc5 Rxc5 6. Qd3 Rc7 7.
>> Qg3 Ra2 8. Qxg5 Rxe2
>> 14-> 30:56 0.70 1. ... Ra6 2. h3 Nc5 3. Rd5 Nfd7 4.
>> cxb4 Bxg5 5. bxc5 Rxc5 6. Qd3 Rc7 7.
>> Qg3 Ra2 8. Qxg5 Rxe2
>> 15 59:08 0.64 1. ... Ra6 2. h3 Kg8 3. Ne3 Nc5 4.
>> Nd5 Ncxe4 5. Nxe7+ Qxe7 6. Qxe4 Nxe4
>> 7. Bxe7 bxc3 8. Rd7 Nd2 9. Rc1 Rac6
>> 15-> 67:56 0.64 1. ... Ra6 2. h3 Kg8 3. Ne3 Nc5 4.
>> Nd5 Ncxe4 5. Nxe7+ Qxe7 6. Qxe4 Nxe4
>> 7. Bxe7 bxc3 8. Rd7 Nd2 9. Rc1 Rac6
>> 16 169:50 0.63 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Ra1
>> 4. Nd3 Rxd1 5. Rxd1 Bc3 6. h3 Kg8 7.
>> Rf1 Nh7 8. Bh6 Qf6 9. Qe2 Qh4 10. Qf3
>> 16-> 220:49 0.63 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Ra1
>> 4. Nd3 Rxd1 5. Rxd1 Bc3 6. h3 Kg8 7.
>> Rf1 Nh7 8. Bh6 Qf6 9. Qe2 Qh4 10. Qf3
>> time=360:00 cpu=399% mat=0 n=33382794664 fh=93% nps=1545k
>> ext-> chk=983771151 cap=80579769 pp=9925423 1rep=61533301 mate=587
>>9294
>> predicted=0 nodes=33382794664 evals=2408593287
>> endgame tablebase-> probes done=0 successful=0
>> SMP-> split=1555 stop=261 data=10/32 cpu=1439:19 elap=360:00
>>
>>Black(1): Ra6
>
>I suspect that no engine besides the Junior in the contest will find it without
>tweaking parameters off from optimium. I mean, even after a 1 week search on a
>stupendous machine they will not find it.
>
>I suspect (further) that even *after* Rxc4 it will take 24 hours for Crafty's
>score to improve to the point where the move will be understood as better than
>having moved Ra6 previously.
My modified crafty is doing a little better on a 450 Mhz Pentium II with 192MB
hash. After Rxc4, bxc4, b3, it took a little over an hour for the score to be
better (for black) than the above score for Ra6. I may let it run for a few more
days to see if anything happens. Note in the PV that white immediately returns
the exchange for the b pawn.
14-> 157:01 0.42 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. Bg5 Rc2 8. Qh3 Qc4 9.
Kg1 Qc5+ 10. Kh1
15 172:21 0.54 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. Rd1 Kg8 8. c4 Qxf3 9.
gxf3 Nb6 10. Rd8+ Kg7 11. c5
15-> 264:31 0.54 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. Rd1 Kg8 8. c4 Qxf3 9.
gxf3 Nb6 10. Rd8+ Kg7 11. c5
16 314:32 0.41 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. Rd1 Rb2 8. c4 Qxf3 9.
gxf3 Nf6 10. Rd6 Ng8 11. Bg5
16-> 684:49 0.41 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. Rd1 Rb2 8. c4 Qxf3 9.
gxf3 Nf6 10. Rd6 Ng8 11. Bg5
17 825:01 0.36 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. h3 Qe6 8. Bh4 Rc2 9.
Qd3 Ra2 10. Rd1 Nf6 11. Qf3
17-> 2061:01 0.36 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. h3 Qe6 8. Bh4 Rc2 9.
Qd3 Ra2 10. Rd1 Nf6 11. Qf3
18 2434:54 0.29 3. Nc1 Qxc4 4. Nxb3 Qxb3 5. Rxd7 Nxd7
6. Bxe7 Ra2 7. h3 Qe6 8. Bh4 Rc2 9.
Qd3 Ra2 10. Rc1 Kg8 11. Qd5 Nf8
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