Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Positional/Real Sacrifice

Author: Ricardo Gibert

Date: 15:44:38 11/30/99

Go up one level in this thread


On November 30, 1999 at 17:36:19, Robert Hyatt wrote:

>On November 30, 1999 at 11:30:03, Dann Corbit wrote:
>
>>Interesting. My 17.2 never even looks at it.  Could it be a fluke of move
>>ordering under multiple CPU's?  Do you get the same answer each time?
>>
>>Crafty 17.2 vs ferret
>>pondering enabled.
>>EGTB cache memory = 16M bytes.
>>hash table memory = 48M bytes.
>>pawn hash table memory = 8M bytes.
>>play best book line after search.
>>EGTB access enabled
>>using tbpath=e:/crafty/release/tb,F:/KBP
>>4 piece tablebase files found
>>1302kb of RAM used for TB indices and decompression tables
>>
>>
>>Crafty v17.2
>>
>>White(1): epdpfga epd.epd epd.out
>>PFGA: EPD record: 1
>>middle-game phase
>>              clearing hash tables
>>              time surplus   0.00  time limit 133:20 (133:20)
>>         nss  depth   time  score   variation (1)
>>                6     1.02   0.27   1. Rf3 Rd8 2. Qf2 Nd4 3. Re3 Bg4
>>                6     1.47   0.31   1. Qd1 Qd7 2. Qf3 Bg4 3. Qd5 Rae8 <HT>
>>                6->   1.74   0.31   1. Qd1 Qd7 2. Qf3 Bg4 3. Qd5 Rae8 <HT>
>>                7     2.80   0.30   1. Qd1 Nb4 2. Qf3 b6 3. a4 Nxd3 4.
>>                                    cxd3 c5
>>                7     4.03   0.31   1. Rf3 Qd7 2. Rg3 Qd4+ 3. Qf2 Qf6 4.
>>                                    c3 Rae8
>>                7->   5.11   0.31   1. Rf3 Qd7 2. Rg3 Qd4+ 3. Qf2 Qf6 4.
>>                                    c3 Rae8
>>                8     6.81   0.35   1. Rf3 Qd7 2. Rg3 Qd4+ 3. Qf2 Qf6 4.
>>                                    c5 Rae8 5. c4
>>                8->  10.70   0.35   1. Rf3 Qd7 2. Rg3 Qd4+ 3. Qf2 Qf6 4.
>>                                    c5 Rae8 5. c4
>>                9    19.52   0.43   1. Rf3 Qd7 2. Qf2 Qd4 3. Qxd4 Nxd4
>>                                    4. Rg3 g5 5. c3 Nf5
>>                9->  22.12   0.43   1. Rf3 Qd7 2. Qf2 Qd4 3. Qxd4 Nxd4
>>                                    4. Rg3 g5 5. c3 Nf5
>>               10     1:18   0.52   1. Rf3 Rd7 2. Rg3 h5 3. Qf2 h4 4. Rg5
>>                                    h3 5. Qg3 f6
>>               10->   1:25   0.52   1. Rf3 Rd7 2. Rg3 h5 3. Qf2 h4 4. Rg5
>>                                    h3 5. Qg3 f6
>>               11     3:01   0.41   1. Rf3 Qd7 2. Qf2 Nb4 3. Rg3 Nxd3 4.
>>                                    cxd3 Bg4 5. Bxc7 Be2 6. Re1 Bxd3 7.
>>                                    Rxe7 Qxe7 8. Rxd3 Qxc7
>>               11->   4:19   0.41   1. Rf3 Qd7 2. Qf2 Nb4 3. Rg3 Nxd3 4.
>>                                    cxd3 Bg4 5. Bxc7 Be2 6. Re1 Bxd3 7.
>>                                    Rxe7 Qxe7 8. Rxd3 Qxc7
>>               12    13:28   0.57   1. Rf3 h5 2. Rg3 f6 3. Re1 Rc8 4. Rge3
>>                                    Qf7 5. Qf2 <HT>
>>               12->  15:16   0.57   1. Rf3 h5 2. Rg3 f6 3. Re1 Rc8 4. Rge3
>>                                    Qf7 5. Qf2 <HT>
>>               13    23:45   1/38   1. Rf3
>
>
>this looks similar to mine.  How the other 17.2 got +1.something is beyond me,
>as it has a huge penalty for trading a bishop for two pawns...

3 pawns. 1 Bxh6 gxh6 2 Qxh6 f5 3 Bxf5...



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.