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Subject: Re: Two WCCC questions

Author: Dann Corbit

Date: 14:18:08 07/30/02

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On July 30, 2002 at 01:21:46, Jouni Uski wrote:

>1. What's wrong with Quest/Fritz - no wins against pro's? And still this program
>is leading SSDF list and will soon challenge Kramnik.
>2. Was Junior's -Rxc4 sac against Brutus really correct? I doubt a lot
>personally.

Crafty has a tough time with it:

White(1): epdpfga \rxc4.epd rxc4.out
PFGA: EPD record: 1
middle-game phase
              clearing hash tables
              time surplus   0.00  time limit 16:39 (16:39)
         nss  depth   time  score   variation (1)
                5     0.55   0.82   1. ... Ra6 2. cxb4 Bxb4 3. Ng3 Kg8
                                    4. Kg1
                5->   0.56   0.82   1. ... Ra6 2. cxb4 Bxb4 3. Ng3 Kg8
                                    4. Kg1
                6     0.93   0.83   1. ... Ra6 2. h3 bxc3 3. Nxc3 Nc5 4.
                                    Bxf6+ Bxf6 5. Nd5 Bg5
                6     1.62   0.78   1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
                                    4. Kg1 Ng4
                6->   1.92   0.78   1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
                                    4. Kg1 Ng4
                7     2.73   0.86   1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Ra1
                                    4. Nd3 Rxd1 5. Rxd1 Bc3
                7     5.32   0.73   1. ... Ra6 2. cxb4 Bxb4 3. Rd3 Kg8
                                    4. Ng3 Bc5 5. Bh6
                7->   5.97   0.73   1. ... Ra6 2. cxb4 Bxb4 3. Rd3 Kg8
                                    4. Ng3 Bc5 5. Bh6
                8     9.23   0.74   1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Bc5
                                    4. Nd3 Bd4 5. Rb1 Ra2
                8->  11.70   0.74   1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Bc5
                                    4. Nd3 Bd4 5. Rb1 Ra2
                9    20.19   0.77   1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
                                    Nc1 Nh7 5. Be3 Kg8 6. Rd5
                9->  30.08   0.77   1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
                                    Nc1 Nh7 5. Be3 Kg8 6. Rd5
               10    52.80   0.74   1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
                                    Nc1 Nh7 5. Be3 Kg8 6. Nd3 Bc3
               10->   1:06   0.74   1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
                                    Nc1 Nh7 5. Be3 Kg8 6. Nd3 Bc3
               11     1:58   0.76   1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Be7
                                    4. Nd3 Nh7 5. Bxe7 Qxe7 6. Qg3 h4 7.
                                    Qf2 Kg8
               11->   3:51   0.76   1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Be7
                                    4. Nd3 Nh7 5. Bxe7 Qxe7 6. Qg3 h4 7.
                                    Qf2 Kg8
               12     4:54   0.76   1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
                                    4. Bh4 Nhf6 5. Nd3 Bc3 6. Bg5 Nh7 7.
                                    Nf4 exf4 8. Qxc3+
               12->   7:38   0.76   1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
                                    4. Bh4 Nhf6 5. Nd3 Bc3 6. Bg5 Nh7 7.
                                    Nf4 exf4 8. Qxc3+
               13     7:38   1/47*  1. ... Ra6



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