Author: Jeremiah Penery
Date: 16:21:18 10/21/01
Go up one level in this thread
On October 21, 2001 at 19:08:02, Eelco de Groot wrote:
>On October 21, 2001 at 17:57:10, Terry McCracken wrote:
>
>>On October 21, 2001 at 17:53:03, Andrew Smith wrote:
>>
>>>I hope this diagram works...
>>>
>>>[D]r1bk3r/1pp2pp1/p2p1n1p/5q2/8/4BN2/PPPQ1PPP/3RR1K1 w - -
>>>
>>>How long does it take your program to find the strong move Bb6! ?
>
>I think that is a nice challenge for one of Jeremiah Penery's modified Craftys
>or a Chessmaster with extra high selectivity. But can they beat old Q5T? A
>properly trained Rebel Q5T "T for Terminator" after having spent a few months in
>a harsh trainingcamp in the Dutch mountains sees Bb6 in about 0.01 second. This
>on a Celeron 500 Mhz. Approximately 1/100 of a second,that is if I assume that
>every ply takes about three times longer than the previous one and seven plies
>are reached in one second.
>00:00 01.00 -2.32 1.Bxh6 Rxh6
>00:00 01.03 1.71 1.Bb6
>00:00 02.00 0.32 1.Bb6 Be6
>00:00 02.11 0.37 1.Nd4 Qd5 2.Bf4 Qxa2
>00:00 03.00 0.01 1.Nd4 Qd5 2.Bf4 Re8 3.Rxe8+
>00:00 03.01 0.01 1.Bb6
>00:00 03.01 1.75 1.Bb6 Nd5 2.Qxd5 Qxd5
>00:00 04.00 1.75 1.Bb6 Nd5 2.Qxd5 Qxd5 3.Bxc7+
>11:13 12.00 2.36 1.Bb6 Nd5 2.Ba5 b6
>
>Positions : 517.422.149
>Nodes per second : 210.505
I've been doing some strange things to Crafty 18.12, and I just finished one,
and came here to find a couple positions to test it. :) It seems I've found a
good one, but the search seems unstable here. :(
White(1): analyze
Analyze Mode: type "exit" to terminate.
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 0.01 2.07 1. Bb6
1-> 0.04 2.07 1. Bb6
2 0.04 1.81 1. Bb6 Ne4
2-> 0.06 1.81 1. Bb6 Ne4
3 0.08 2.00 1. Bb6 Nd5 2. Nd4
3-> 0.11 2.00 1. Bb6 Nd5 2. Nd4
4 0.14 1.88 1. Bb6 Nd5 2. Re5 dxe5 3. Qxd5+
4-> 0.22 1.88 1. Bb6 Nd5 2. Re5 dxe5 3. Qxd5+
5 0.44 2.08 1. Bb6 Ne8 2. Qe3 Qf6 3. Bd4
5-> 0.68 2.08 1. Bb6 Ne8 2. Qe3 Qf6 3. Bd4
6 1.38 1.92 1. Bb6 Nd5 2. Bxc7+ Kxc7 3. c4 Qf4
4. Qxd5
6 2.63 1.98 1. Qc3 Ne8 2. Bd4 Rg8 3. Qc4 Qf4
6-> 3.06 1.98 1. Qc3 Ne8 2. Bd4 Rg8 3. Qc4 Qf4
7 5.60 -- 1. Qc3
7 6.37 1.57 1. Qc3 Bd7 2. Bb6 cxb6 3. Rxd6 Ne4
4. Qxg7 Nxd6 5. Qxh8+
7 9.44 ++ 1. Bb6!!
7 12.84 2.63 1. Bb6 Qd7 2. Ne5 dxe5 3. Qa5 cxb6
4. Qxb6+ Ke7 5. Rxe5+
7-> 13.94 2.63 1. Bb6 Qd7 2. Ne5 dxe5 3. Qa5 cxb6
4. Qxb6+ Ke7 5. Rxe5+
8 21.14 2.48 1. Bb6 Qd7 2. Qb4 Ne8 3. Ne5 Qe6 4.
Bc5 Qf5
8-> 31.06 2.48 1. Bb6 Qd7 2. Qb4 Ne8 3. Ne5 Qe6 4.
Bc5 Qf5
9 40.74 -- 1. Bb6
9 1:37 0.00 1. Bb6 cxb6 2. Ne5 Be6 3. Nc6+ bxc6
4. Qxd6+ Kc8 5. Qxc6+ Kb8 6. Qxb6+
Kc8 7. Rd8+ Rxd8 8. Qc6+ Kb8 9. Qb6+
Kc8
It takes a while searching for another move, so I moved ahead with Bb6 cxb6:
6-> 2.83 4.50 2. Qxd6+ Bd7 3. Re5 Kc8 4. Rxf5 Bxf5
5. Qxb6
7 4.81 -- 2. Qxd6+
7 10.73 -0.05 2. Qxd6+ Bd7 3. Re5 Qh7 4. Re3 Kc8
5. Rc3+ Bc6 6. Rxc6+ bxc6 7. Qxc6+
Kb8 8. Qxb6+ Kc8
7 14.07 0.00 2. Ne5 Be6 3. Nc6+ bxc6 4. Qxd6+ Kc8
5. Qxc6+ Kb8 6. Qxb6+ Kc8 7. Rd8+ Rxd8
8. Qc6+ Kb8 9. Qb6+ Kc8
7-> 21.38 0.00 2. Ne5 Be6 3. Nc6+ bxc6 4. Qxd6+ Kc8
5. Qxc6+ Kb8 6. Qxb6+ Kc8 7. Rd8+ Rxd8
8. Qc6+ Kb8 9. Qb6+ Kc8
8 26.22 -0.34 2. Ne5 Ne8 3. Nc4 Qg6 4. Nxb6 Bh3 5.
f4 Rc8
8 26.72 ++ 2. Qxd6+!!
8 51.42 1.31 2. Qxd6+ Bd7 3. Re5 Qxc2 4. Qxb6+ Qc7
5. Qd4 Kc8 6. Rc5 Bc6
8-> 1:13 1.31 2. Qxd6+ Bd7 3. Re5 Qxc2 4. Qxb6+ Qc7
5. Qd4 Kc8 6. Rc5 Bc6
9 1:53 1.66 2. Qxd6+ Bd7 3. Re5 Qxc2 4. Qxb6+ Qc7
5. Qd4 Kc8 6. Rc5 Bc6 7. Rdc1
I will have to work out some search instabilities. :(
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