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Subject: Re: hard position .....Easy for ..Josh - age 12.......only 6 seconds..!!

Author: Rob Basham

Date: 09:08:38 03/27/05

Go up one level in this thread


CM-9000.....


Josh age 12...finds Rxc2 in just 6 seconds...!!

plays all the moves correctly....including the knight sac at g3....!


P3-850...


Nice test moves!

Thanks!

Rob

RobOn March 26, 2005 at 17:28:07, Mike Byrne wrote:

>Black(1): info
>Crafty version 19.20
>hash table memory =       384M bytes.
>pawn hash table memory =   96M bytes.
>EGTB cache memory =       128M bytes.
>60 moves/30 minutes 0 seconds primary time control
>30 moves/15 minutes 0 seconds secondary time control
>frequency (freq)..............1.00
>static evaluation (eval)......0.50
>learning (learn)..............1.00
>CAP (CAP score)...............0.70
>Black(1): new
>parallel threads terminated.
>White(1): [d]2r1k2r/1p2np2/q3p1p1/b2pPnN1/3p1P2/PR3N2/2P3QP/R1B4K b k - 0 1
>
>Black(1): g
>              clearing hash tables
>              time surplus   0.00  time limit 100:00 (100:00)
>              depth   time  score   variation (1)
>starting thread 1
>                7     0.05  -1.55   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Rb8+ Nc8 (s=2)
>                7->   0.10  -1.55   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Rb8+ Nc8 (s=4)
>                8     0.22     -1   1. ... Qe2!!
>                8     0.32  -2.22   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bb2 Nxf4+ 6. Kf1 (s=3)
>                8->   0.46  -2.22   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bb2 Nxf4+ 6. Kf1
>                9     0.91  -2.26   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bb2 Nxf4+ 6. Kg3 Ne2+
>                                    7. Kf2
>                9->   1.13  -2.26   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bb2 Nxf4+ 6. Kg3 Ne2+
>                                    7. Kf2
>               10     3.72  -2.41   1. ... Qe2 2. Bb2 Rxc2 3. Qxe2 Ng3+
>                                    4. Kg2 Nxe2 5. Rxb7 Nxf4+ 6. Kf1 d3
>                                    7. Rb8+ Nc8 8. Rb7
>               10->   4.24  -2.41   1. ... Qe2 2. Bb2 Rxc2 3. Qxe2 Ng3+
>                                    4. Kg2 Nxe2 5. Rxb7 Nxf4+ 6. Kf1 d3
>                                    7. Rb8+ Nc8 8. Rb7
>               11     6.42  -2.27   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Rb2 Nxf4+ 6. Kf1 Rxb2
>                                    7. Bxb2 Bc3 8. Ra2
>               11->   8.63  -2.27   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Rb2 Nxf4+ 6. Kf1 Rxb2
>                                    7. Bxb2 Bc3 8. Ra2
>               12    11.41  -2.20   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bd2 Nxf4+ 6. Kh1 Bxd2
>                                    7. Nxd2 Nd3 8. Rb8+ Nc8 9. Ngf3 <HT>
>               12->  19.22  -2.20   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bd2 Nxf4+ 6. Kh1 Bxd2
>                                    7. Nxd2 Nd3 8. Rb8+ Nc8 9. Ngf3 <HT>
>                                    (s=5)
>               13    23.42  -2.01   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bd2 Nxf4+ 6. Kh1 Bxd2
>                                    7. Nxd2 O-O 8. Rxe7 Rxd2 9. Rd7 (s=4)
>               13->  45.46  -2.01   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Bd2 Nxf4+ 6. Kh1 Bxd2
>                                    7. Nxd2 O-O 8. Rxe7 Rxd2 9. Rd7 (s=9)
>               14    56.91  -2.11   1. ... Qe2 2. Qxe2 Ng3+ 3. Kg2 Nxe2
>                                    4. Rxb7 Rxc2 5. Rb8+ Nc8 6. Rb2 Nxf4+
>                                    7. Kf1 Rxb2 8. Bxb2 d3 9. Rd1 O-O 10.
>                                    Nd2 (s=8)
>               14     1:19     -1   1. ... Rxc2!!
>               14     1:32     -3   1. ... Rxc2!!
>               14     1:53     -M   1. ... Rxc2!!
>               14     2:34  -5.69   1. ... Rxc2 2. Qg1 Qe2 3. Rxb7 Rh3
>                                    4. Rb8+ Kd7 5. Rb7+ Kc8 6. Rb2 Rxb2
>                                    7. Bxb2 Ng3+ 8. Qxg3 Rxg3 9. hxg3 Qxb2
>                                    10. Rd1 Qxa3 11. Rxd4 (s=5)
>               14->   2:37  -5.69   1. ... Rxc2 2. Qg1 Qe2 3. Rxb7 Rh3
>                                    4. Rb8+ Kd7 5. Rb7+ Kc8 6. Rb2 Rxb2
>                                    7. Bxb2 Ng3+ 8. Qxg3 Rxg3 9. hxg3 Qxb2
>                                    10. Rd1 Qxa3 11. Rxd4
>?              15     2:45   1/50*  1. ... Rxc2
>Black(0): ?
>              time=2:50  cpu=74%  mat=-1  n=594913481  fh=94%  nps=3.48M
>              ext-> chk=30373367 cap=1264785 pp=968512 1rep=3038326 mate=21061
>              predicted=0  nodes=594913481  evals=116530433  50move=0
>              endgame tablebase-> probes=0  hits=0
>              SMP->  split=2430  stop=263  data=10/64  cpu=2:07  elap=2:50
>
>Black(1): Rxc2
>              time used:   2:50
>
>in case you're wondering
>
>Rxc2 Qxc2 leads to mate ...
>
>White(2): Qxc2
>              time used:   2:08
>              time surplus   0.00  time limit 100:00 (100:00)
>              depth   time  score   variation (1)
>               13     9.39  -5.96   2. ... Ng3+ 3. Kg2 Qf1+ 4. Kxg3 Nf5+
>                                    5. Qxf5 Be1+ 6. Nxe1 Qxe1+ 7. Kg2 Qe2+
>                                    8. Kg3 Qxh2+ 9. Kf3 Qh1+ 10. Kg3 Qg1+
>                                    11. Kf3 gxf5 12. Nh7 Qd1+ 13. Kg2 Qc2+
>                                    14. Kg1 Rg8+ 15. Ng5 Qxb3
>               13->  15.86  -5.96   2. ... Ng3+ 3. Kg2 Qf1+ 4. Kxg3 Nf5+
>                                    5. Qxf5 Be1+ 6. Nxe1 Qxe1+ 7. Kg2 Qe2+
>                                    8. Kg3 Qxh2+ 9. Kf3 Qh1+ 10. Kg3 Qg1+
>                                    11. Kf3 gxf5 12. Nh7 Qd1+ 13. Kg2 Qc2+
>                                    14. Kg1 Rg8+ 15. Ng5 Qxb3 (s=2)
>               14    15.95     -1   2. ... Ng3+!!
>               14    15.98     -3   2. ... Ng3+!!
>               14    16.28     -M   2. ... Ng3+!!
>               14     2:00 -Mat15   2. ... Ng3+ 3. Kg2 Qf1+ 4. Kxg3 Nf5+
>                                    5. Qxf5 Be1+ 6. Nxe1 Qxe1+ 7. Kg2 Qe2+
>                                    8. Kg3 Qxh2+ 9. Kf3 Qh1+ 10. Kg3 Qg1+
>                                    11. Kf3 gxf5 12. Nh7 Rxh7 13. Be3 Qg4+
>                                    14. Kf2 Rh2+ 15. Kf1 Qe2+ 16. Kg1 Qg2#
>?              14     2:00   2/42*  2. ... Qf1+
>Black(1): ?
>              time=2:10  cpu=187%  mat=3  n=511495719  fh=98%  nps=3.91M
>              ext-> chk=74357706 cap=273368 pp=604917 1rep=11881032 mate=93485
>              predicted=0  nodes=511495719  evals=6762150  50move=0
>              endgame tablebase-> probes=0  hits=0
>              SMP->  split=2604  stop=148  data=13/64  cpu=4:05  elap=2:10
>
>mate in 15 moves.
>
>
>Black(2): Ng3+
>              time used:   2:10



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