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Subject: Re: How many programs can find the winning move 52...Qe3+ ?

Author: Tony Werten

Date: 23:23:11 08/06/03

Go up one level in this thread


On August 06, 2003 at 20:01:47, Mike Byrne wrote:

>On August 06, 2003 at 11:49:38, Martin Andersen wrote:
>
>>Crafty 19.3 found it eventually (after 33 min).
>>Redhat 8.0, Athlon 2400+
>>
>>Depth:       19      Nodes: 2011286901 (1008134 n/s)
>>Score:    -3.97      Time:   1995.06 seconds
>>1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7 4. Kf1 Ka6 5. Ke2 Ka5 6. Kxe3 Kb4 7. Kf3
>>Kc3 8. Ke2 g5 9. Ke3 g4 10. Ke2 g3 11. Ke3 g2 12. Kf2 Kxd3
>>
>>
>>Martin.
>

if (move==Qe3) inc(score,200) ?

:)

Tony

>
>I added just one line of code , and my new modified crafty will find this in 44
>seconds.  This line of code was NOT in the version e-mail yestrday and further
>testing remains.  I did not change evaluations - jsut modify search for this
>situation.  If interesed email me with the word "include" for a free copy to be
>emailed when ready.   May have it ready by tonight ot tomorrow.
>
>Crafty v19.4 (2 cpus)
>
>White(1): /kp6/P5p1/2p1p3/2PpP3/3P3Q/4q3/6K1 b - - 0 1
>Black(1): st 9999999
>search time set to 9999999.00.
>Black(1): go
>end-game phase
>              clearing hash tables
>              time surplus   0.00  time limit 166666:39 (166666:39)
>              depth   time  score   variation (1)
>starting thread 1
>                2->   0.00  -8.16   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                3     0.00  -8.26   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kc6
>                3->   0.00  -8.26   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kc6
>                4     0.01  -7.96   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kb8
>                                    4. Kg2 Kxb7
>                4->   0.01  -7.96   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kb8
>                                    4. Kg2 Kxb7
>                5     0.01     --   1. ... Qe3+
>                5     0.01  -7.31   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kb8
>                                    4. Kf1 Kxb7 5. Ke2
>                5->   0.03  -7.31   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kb8
>                                    4. Kf1 Kxb7 5. Ke2 (s=6)
>                6     0.03     --   1. ... Qe3+
>                6     0.04  -1.58   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kg2 g5 5. Kf3 g4+ 6. Ke2 g3 7. Kxe3
>                                    (s=5)
>                6     0.07  -3.04   1. ... Qe1+ 2. Kh2 Qd2+ 3. Kh1 Qd1+
>                                    4. Kh2 Qc2+ 5. Kg1 Qb1+ 6. Kg2 Qc2+
>                                    <HT> (s=4)
>                6->   0.11  -3.04   1. ... Qe1+ 2. Kh2 Qd2+ 3. Kh1 Qd1+
>                                    4. Kh2 Qc2+ 5. Kg1 Qb1+ 6. Kg2 Qc2+
>                                    <HT>
>                7     0.15  -3.00   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kf1 Kxa6
>                                    4. Qf3 Qf4 5. Kg2 Qxf3+ 6. Kxf3 Kb6
>                                    <HT>
>                7->   0.20  -3.00   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kf1 Kxa6
>                                    4. Qf3 Qf4 5. Kg2 Qxf3+ 6. Kxf3 Kb6
>                                    <HT>
>                8     0.31  -2.96   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Kxa6
>                                    4. Qf1 g5 5. Qf6+ b6 6. Qf3 Qf4
>                8     0.40  -2.99   1. ... Kxa6 2. Qg3 b6 3. Kh1 g5 4.
>                                    Qxe5 Qxd3 5. Qd5
>                8->   0.40  -2.99   1. ... Kxa6 2. Qg3 b6 3. Kh1 g5 4.
>                                    Qxe5 Qxd3 5. Qd5 (s=3)
>                9     0.68  -2.99   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qb5 Qxd3 8. Qxc5+ (s=2)
>                9->   0.81  -2.99   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qb5 Qxd3 8. Qxc5+
>               10     1.00  -2.90   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qh3 Qd1+ 8. Kh2 Qe2+ 9. Kh1
>               10->   1.45  -2.90   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qh3 Qd1+ 8. Kh2 Qe2+ 9. Kh1 (s=3)
>               11     2.06  -2.92   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qc7 Qc1+ 8. Kg2 Qd2+ 9. Kg1 Qxd3
>                                    10. Qxc5+ (s=2)
>               11->   2.45  -2.92   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qc7 Qc1+ 8. Kg2 Qd2+ 9. Kg1 Qxd3
>                                    10. Qxc5+
>               12     3.29  -2.92   1. ... Kxa6 2. Qd7 Qe3+ 3. Kh2 Qd2+
>                                    4. Kh1 Qc1+ 5. Kh2 Qc2+ 6. Kh1 Ka7
>                                    7. Qc7 Qc1+ 8. Kg2 Qd2+ 9. Kg1 Qe3+
>                                    10. Kh2 Qe2+ 11. Kg1 Qxd3 12. Qxc5+
>               12     4.96  -2.93   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 bxa6 6. Qd7+ Qb7
>                                    7. Qa4 Qf7+ 8. Ke2 Kb6 9. Qb3+ Kc7
>                                    10. Qa3 Kb6
>               12->   5.29  -2.93   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 bxa6 6. Qd7+ Qb7
>                                    7. Qa4 Qf7+ 8. Ke2 Kb6 9. Qb3+ Kc7
>                                    10. Qa3 Kb6 (s=3)
>               13     6.42  -2.99   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 bxa6 6. Qd7+ Qb7
>                                    7. Qa4 Qb1+ 8. Kf2 Qxd3 9. Qd7+ Kb6
>                                    10. Qd6+ Kb7 11. Qd5+ Kc7 12. Qxc5+
>                                    Kd7 13. Qxe5 Qxc4 (s=2)
>               13->   7.84  -2.99   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 bxa6 6. Qd7+ Qb7
>                                    7. Qa4 Qb1+ 8. Kf2 Qxd3 9. Qd7+ Kb6
>                                    10. Qd6+ Kb7 11. Qd5+ Kc7 12. Qxc5+
>                                    Kd7 13. Qxe5 Qxc4 (s=2)
>               14    11.40  -2.98   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 bxa6 6. Qd7+ Qb7
>                                    7. Qa4 Qc8 8. Qa3 Qh3+ 9. Ke1 Qe3+
>                                    10. Kd1 Kb6 11. Qb2+ Kc6 12. Kc2
>               14->  16.84  -2.98   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 bxa6 6. Qd7+ Qb7
>                                    7. Qa4 Qc8 8. Qa3 Qh3+ 9. Ke1 Qe3+
>                                    10. Kd1 Kb6 11. Qb2+ Kc6 12. Kc2 (s=2)
>               15    24.20  -2.98   1. ... Qe1+ 2. Kg2 Qd2+ 3. Kg1 Qc1+
>                                    4. Kg2 Qb2+ 5. Kf1 Kxa6 6. Qe6+ Ka5
>                                    7. Qxe5 Qb1+ 8. Kg2 Qc2+ 9. Kg1 Kb4
>                                    10. Qg3 Kc3 11. Qxg6 Qxd3 12. Qh7 Qxc4
>                                    13. Qxb7
>               15    44.04     ++   1. ... Qe3+!!
>               15    48.68  -3.44   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Kf3 Kxd3
>               15->  48.73  -3.44   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Kf3 Kxd3 (s=4)
>               16    56.25     ++   1. ... Qe3+!!
>               16    58.54  -3.97   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Ke2 g2 12. Kf2 Kxd3 (s=3)
>               16->   1:08  -3.97   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Ke2 g2 12. Kf2 Kxd3 (s=4)
>               17     1:13  -4.10   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Kf3 Kxd3 12. Kxg3 Kxe4 (s=3)
>               17->   1:53  -4.10   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Kf3 Kxd3 12. Kxg3 Kxe4 (s=4)
>               18     2:25  -4.10   1. ... Qe3+ 2. Qxe3 dxe3 3. axb7 Kxb7
>                                    4. Kf1 Kb6 5. Kg2 Ka5 6. Kg3 Kb4 7.
>                                    Kf3 g5 8. Kxe3 Kc3 9. Ke2 g4 10. Ke3
>                                    g3 11. Kf3 Kxd3 12. Kxg3 Kxe4 13. Kg4
>                                    (s=3)
>               18     2:45   2/24*  1. ... Qd1+



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