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Subject: Re: Positions from Tao vs Ruffian matches

Author: Bryan Hofmann

Date: 08:12:56 05/08/04

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On May 08, 2004 at 09:33:08, Mike Byrne wrote:

>Crafty v19.12 SE [Morphy] (2 cpus)
>SE code enabled
>Black(1): [d]r1q3k1/pp1R1pb1/2n1r2p/3Q2p1/2P5/1P4B1/P4PPP/2KN3R b - - 6 22
>Black(1): go
>              clearing hash tables
>              time surplus   0.00  time limit 3:00 (3:00)
>              time surplus   0.00  time limit 3:00 (3:00)
>              depth   time  score   variation (1)
>                2     0.00   1.52   1. ... a6 2. Kb1
>                2     0.00   0.92   1. ... b5 2. c5
>                2     0.02   0.62   1. ... Nb4 2. Qd2
>                2->   0.02   0.62   1. ... Nb4 2. Qd2
>                3     0.02   0.24   1. ... Nb4 2. Qxb7 Nxa2+ 3. Kb1
>                3->   0.04   0.24   1. ... Nb4 2. Qxb7 Nxa2+ 3. Kb1
>                4     0.04     -1   1. ... Nb4
>                4     0.05   0.93   1. ... Nb4 2. Qxb7 Nxa2+ 3. Kb1 Re2
>                                    4. Qxc8+ Rxc8 5. Rxa7
>                4     0.05   0.67   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Qd7
>                4->   0.07   0.67   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Qd7
>                                    (s=2)
>                5     0.07     -1   1. ... Re7
>                5     0.07   1.16   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Qc5
>                                    4. Kb1
>                5     0.08   0.96   1. ... Nb4 2. Qxb7 Nxa2+ 3. Kb1 Qxb7
>                                    4. Rxb7 Re2
>                5     0.13   0.42   1. ... b5 2. Rc7 Qe8 3. Qxb5 Rd8
>                5->   0.13   0.42   1. ... b5 2. Rc7 Qe8 3. Qxb5 Rd8 (s=2)
>                6     0.13     -1   1. ... b5
>                6     0.16   0.93   1. ... b5 2. Rc7 Qa6 3. Qxb5 Qa3+ 4.
>                                    Kb1 Rb8
>                6     0.21   0.83   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Nf5
>                                    4. Kb1 Bd4
>                6     0.32   0.24   1. ... a5 2. Rc7 Qf8 3. h4 Nb4 4. Qd2
>                6->   0.35   0.24   1. ... a5 2. Rc7 Qf8 3. h4 Nb4 4. Qd2
>                7     0.52   0.21   1. ... a5 2. h4 a4 3. Rc7 Qe8 4. hxg5
>                                    axb3 5. axb3
>                7->   0.60   0.21   1. ... a5 2. h4 a4 3. Rc7 Qe8 4. hxg5
>                                    axb3 5. axb3
>                8     1.14   0.21   1. ... a5 2. Rc7 Qf8 3. Rxb7 Nb4 4.
>                                    Qf3 Nxa2+ 5. Kb1 Nb4
>                8->   1.36   0.21   1. ... a5 2. Rc7 Qf8 3. Rxb7 Nb4 4.
>                                    Qf3 Nxa2+ 5. Kb1 Nb4
>                9     2.39   0.00   1. ... a5 2. Rc7 Qf8 3. Rxb7 Rd8 4.
>                                    Rd7 Rxd7 5. Qxd7 a4 6. bxa4
>                9->   2.72   0.00   1. ... a5 2. Rc7 Qf8 3. Rxb7 Rd8 4.
>                                    Rd7 Rxd7 5. Qxd7 a4 6. bxa4
>               10     7.24   0.06   1. ... a5 2. a4 Re7 3. Rxe7 Nxe7 4.
>                                    Qe4 Nf5 5. Kb1 Nd4 6. h4 Nxb3 7. hxg5
>                                    hxg5
>               10->   8.75   0.06   1. ... a5 2. a4 Re7 3. Rxe7 Nxe7 4.
>                                    Qe4 Nf5 5. Kb1 Nd4 6. h4 Nxb3 7. hxg5
>                                    hxg5
>               11    16.41  -0.20   1. ... a5 2. a4 Qf8 3. Bd6 Qe8 4. Rxb7
>                                    Rd8 5. c5 Be5 6. Rc7 Bxd6 7. Rxc6
>               11->  21.63  -0.20   1. ... a5 2. a4 Qf8 3. Bd6 Qe8 4. Rxb7
>                                    Rd8 5. c5 Be5 6. Rc7 Bxd6 7. Rxc6
>               12    39.54  -0.19   1. ... a5 2. a4 Re7 3. Rxe7 Nxe7 4.
>                                    Qe4 Nc6 5. Re1 Nd4 6. Re3 Qc5 7. Kb1
>                                    Rc8 8. Qxb7
>?              12     1:30   5/43*  1. ... Qe8
>Black(0): ?
>              time=1:46  cpu=188%  mat=1  n=117563940  fh=92%  nps=1.10M
>              ext-> chk=5052056 cap=326803 pp=50187 1rep=289919 mate=11327
>              predicted=1  nodes=117563940  evals=28913817  50move=0
>              endgame tablebase-> probes=0  hits=0
>              SMP->  split=282  stop=31  data=4/128  cpu=3:21  elap=1:46
>
>Black(1): a5
>              time used:   1:46

Interesting, Normal Crafty 19.12 has the following;

Crafty 19.12
 6   00:02  0.74   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Qd7 4. h4 g4
 7   00:02  1.00   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Nf5 4. Kb1 Bd4 5. Re1
 7   00:02  0.87   1. ... b6 2. Rc7 Qe8 3. Bd6 Rc8 4. Rxc8 Qxc8 5. Kb1
 8   00:02  0.92   1. ... b6 2. Kb1 Nb4 3. Qd2 Qc6 4. f4 Qe4+ 5. Kc1 Re7 6. Rxe7
Qxe7 7. fxg5 hxg5
 8   00:03  0.88   1. ... Re7 2. Rxe7 Nxe7 3. Qe4 Qd7 4. h4 f5 5. Qf3 g4
 8   00:04  0.66   1. ... a5 2. Rc7 Qf8 3. h4 a4 4. hxg5 Qa3+ 5. Kb1 axb3
 9   00:04  0.81   1. ... a5 2. Rc7 Qe8 3. Qd7 Re7 4. Qxe8+ Raxe8 5. Rxe7 Rxe7
6. Ne3 Nb4 7. a4
 9   00:05  0.68   1. ... b6 2. Rc7 Qe8 3. Qd7 Qxd7 4. Rxd7 Re2 5. h4 Rxa2 6.
hxg5 hxg5
 9   00:07  0.66   1. ... b5 2. Rc7 Qa6 3. a4 bxa4 4. Re1 axb3 5. Rxe6 Qa1+ 6.
Kd2 fxe6 7. Qxc6
10   00:11  0.57   1. ... b5 2. Rc7 Qa6 3. Qf5 Ne7 4. Qc5 Bf6 5. Qxb5 Qxa2 6.
Rd7
11   00:24  0.27   1. ... b5 2. Rc7 Qa6 3. Qf5 Ne7 4. Qxb5 Qxa2 5. Qa4 Qe2 6.
Qd7 Rb8
12   00:59  0.12   1. ... b5 2. Rc7 Qa6 3. Qf5 Bf6 4. Qxb5 Qxa2 5. Qa4 Qxa4 6.
bxa4 Rd8 7. h4 g4
12   02:50 -0.01   1. ... Qe8 2. h4 Re2 3. Rxb7 Rxa2 4. hxg5 Ra1+ 5. Kd2 Rd8 6.
Bd6 Ra2+ 7. Kc1 Ra1+ 8. Kd2






>White(2):
>
>Best,
>
>Michael
>
>           _
>         _| |_
>        |_ + _|
>         _| |_
>       _/_____\_
>       \       /
>        \_____/
>        (_____)
>         |   |
>         |___|
>        /     \
>      /_________\
>     |._________.|
>    /_____________\
>   (._____________.)



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