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Subject: Re: Can your program find it?

Author: Dann Corbit

Date: 12:53:10 10/17/02

Go up one level in this thread


On October 17, 2002 at 15:18:59, Ernst Walet wrote:

>On October 17, 2002 at 08:09:28, Grzegorz Sidorowicz wrote:
>
>>
>>This position is from the game Terra-Armageddon (after 36. Kf3)
>>[D]8/6kp/pp3p2/5Qp1/1P2n3/P1P2KP1/3q3P/5B2 b - - bm Nf2
>>
>>[Event "AT1, DP733, 128/4/4, P=on"]
>>[Site "Trier, 40/20"]
>>[Date "2002.10.09"]
>>[Round "10"]
>>[White "Terra 2.9"]
>>[Black "Armageddon 2.155"]
>>[ECO "C00 "]
>>[Result "1-0"]
>>
>>1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 b6 5. c3 c5 6. Be2 dxe4 7. Nxe4 Nxe4
>>8. Qa4+ Bd7 9. Qxe4 Bc6 10. Qg4 Nd7 11. O-O g6 12. Qh3 Bg7 13. Rd1 Rc8
>>14. Bh6 O-O 15. d4 Qc7 16. dxc5 Nxc5 17. Ng5 Bxh6 18. Qxh6 f6 19. Nf3 Bxf3
>>20. Bxf3 Rfd8 21. Qh4 g5 22. Qh3 Rxd1+ 23. Rxd1 Rd8 24. Re1 e5 25. Qf5
>>Rd6 26. Rd1 e4 27. Rxd6 Qxd6 28. Be2 Qd2 29. Bf1 e3 30. fxe3 Qxe3+ 31. Kh1
>>Kg7 32. a3 a6 33. g3 Qc1 34. b4 Ne4 35. Kg2 Qd2+ 36. Kf3 Nd6 37. Qd3 Qxd3+
>>38. Bxd3 b5 39. Ke3 h5 40. Kd4 h4 41. Kc5 hxg3 42. hxg3 Nf7 43. Bf5 Ne5
>>44. Bc8 Nc4 45. a4 Nd2 46. a5 Ne4+ 47. Kb6 Nxc3 48. Bxa6 Nd5+ 49. Kxb5
>>Nc3+ 50. Kc6 f5 51. Bc4 f4 52. gxf4 Nd1 53. a6 gxf4 54. a7 Ne3 55. Kc5
>>Kg6 56. a8=Q Kf5 57. Bd3+ Kg4 58. b5 Kg3 59. b6 Ng4 60. b7 Nf2 61. Bf5
>>Nd1 62. b8=Q Nc3 63. Qg8+ Kf2 64. Qag2+ Ke1 65. Qe6+ Ne4+ 66. Qexe4+ Kd1
>>67. Qgc2#  1-0
>>
>>
>>Analysis by Gambit Tiger 2.0:
>>
>>= (0.00): 36...Nf2 37.Be2 Nd1 38.Qd3 g4+ 39.Kg2 Ne3+ 40.Kf2 Nd1+ 41.Kf1 Ne3+
>>42.Kf2
>>² (0.53): 36...Nd6 37.Qd3 Qxd3+ 38.Bxd3 b5 39.Ke3 f5 40.Kd4 Kf6 41.Kd5 Nf7 42.c4
>>Ne5 43.cxb5 Nxd3 44.bxa6
>>² (0.56): 36...Nxc3 37.Bd3 Qd1+ 38.Kg2 Qh5 39.Bxa6 Qg6 40.Qd3 Qe8 41.Bc4 Qc6+
>>42.Kf2 Nb1 43.Ba2 Nc3
>>
>>Armageddon play Nd6 and lose the game.
>>
>>Grzegorz
>
>Hiacrs8 sees it immediately.
>
>New game
>8/6kp/pp3p2/5Qp1/1P2n3/P1P2KP1/3q3P/5B2 b - - 0 1
>
>Analysis by Hiarcs 8:
>
>1...Nd6 2.Qd7+
>  ³  (-0.52)   Depth: 1   00:00:00
>1...Nd6 2.Qd7+
>  ³  (-0.27)   Depth: 2/11   00:00:00
>1...Nd6 2.Qd3 Qe1
>  ²  (0.39)   Depth: 2/11   00:00:00
>1...Nxc3 2.Bxa6
>  =  (-0.13)   Depth: 2/11   00:00:00
>1...Nxc3 2.Bd3 Qd1+ 3.Kf2
>  =  (0.00)   Depth: 3/11   00:00:00
>1...Nxc3 2.Bd3
>  =  (0.25)   Depth: 4/17   00:00:00
>1...Nxc3 2.Bd3
>  =  (0.25)   Depth: 4/17   00:00:00
>1...Nf2 2.Be2
>  =  (0.00)   Depth: 4/17   00:00:00
>1...Nf2 2.Be2
>  =  (0.00)   Depth: 5/17   00:00:00  4kN
>1...Nf2 2.Be2
>  =  (0.00)   Depth: 6/17   00:00:00  6kN
>1...Nf2 2.Be2
>  =  (0.00)   Depth: 7/17   00:00:00  10kN
>1...Nf2 2.Be2 Nd1 3.Qd3 g4+ 4.Kg2 Ne3+ 5.Kf2 Nd1+ 6.Kg2
>  =  (0.00)   Depth: 8/26   00:00:01  362kN
>1...Nf2 2.Be2 Nd1 3.Qe6 Qxc3+ 4.Kg4 Ne3+ 5.Kh5 b5 6.Qe7+ Kg8 7.Qe8+ Kg7 8.Qe7+
>  =  (0.00)   Depth: 9/28   00:00:08  1727kN
>1...Nf2 2.Be2 Nd1 3.Qe6 Qxc3+ 4.Kg4 Ne3+ 5.Kh5 Qd2 6.Qe7+ Kg8 7.Qe8+ Kg7 8.Qe7+
>  =  (0.00)   Depth: 10/31   00:00:29  5647kN
>
>(Athlon 4 XP1500+, 64MB hash 17.10.2002)
>
>Ernst.

Crafty:
PFGA: EPD record: 1
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 16:39 (16:39)
              depth   time  score   variation (1)
                6->   0.25   0.25   1. ... Nxc3 2. Bd3 Qd1+ 3. Kg2 Qd2+
                                    4. Kh3 b5 5. Qxh7+
                7     0.32   0.20   1. ... Nxc3 2. Bd3 Qd1+ 3. Kg2 Qd2+
                                    4. Kh3 b5 5. Qxh7+ Kf8
                7->   0.51   0.20   1. ... Nxc3 2. Bd3 Qd1+ 3. Kg2 Qd2+
                                    4. Kh3 b5 5. Qxh7+ Kf8
                8     0.71   0.30   1. ... Nxc3 2. Bd3 Qd1+ 3. Kg2 Qd2+
                                    4. Kh3 a5 5. Qxh7+ Kf8 6. Bg6 Qf2
                8     1.76   0.05   1. ... Nf2 2. g4 Nd1 3. Bxa6 Qf2+ 4.
                                    Ke4 Qe1+ 5. Kd4 Qxc3+ 6. Kd5 Qxa3
                8->   1.96   0.05   1. ... Nf2 2. g4 Nd1 3. Bxa6 Qf2+ 4.
                                    Ke4 Qe1+ 5. Kd4 Qxc3+ 6. Kd5 Qxa3
                9     3.40  -0.06   1. ... Nf2 2. Qe6 g4+ 3. Kg2 Ne4+ 4.
                                    Kh1 Qd1 5. Kg1 Nd2 6. Qe2 Nf3+ 7. Kg2
                9->   4.31  -0.06   1. ... Nf2 2. Qe6 g4+ 3. Kg2 Ne4+ 4.
                                    Kh1 Qd1 5. Kg1 Nd2 6. Qe2 Nf3+ 7. Kg2
               10     6.40   0.12   1. ... Nf2 2. Qe6 g4+ 3. Kg2 Nd1+ 4.
                                    Qe2 Ne3+ 5. Kf2 Nxf1 6. Kxf1 Qxe2+
                                    7. Kxe2 b5 8. Ke3
               10->   9.27   0.12   1. ... Nf2 2. Qe6 g4+ 3. Kg2 Nd1+ 4.
                                    Qe2 Ne3+ 5. Kf2 Nxf1 6. Kxf1 Qxe2+
                                    7. Kxe2 b5 8. Ke3
               11    18.30   0.13   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg1 Qe1+ 7.
                                    Kg2 Qf2+ 8. Kh1 Nxc3 9. Bxg4
               11->  25.31   0.13   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg1 Qe1+ 7.
                                    Kg2 Qf2+ 8. Kh1 Nxc3 9. Bxg4
               12    31.72   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               12->  39.49   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               13    53.86   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               13->   1:16   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               14     1:57   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               14->   2:34   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               15     4:36   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               15->   6:48   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
               16    12:50   0.00   1. ... Nf2 2. Be2 Nd1 3. Qd3 g4+ 4.
                                    Kg2 Ne3+ 5. Kf2 Nd1+ 6. Kg2
              time=16:40  cpu=97%  mat=0  n=597743722  fh=90%  nps=597k
              ext-> chk=53008676 cap=1263297 pp=124938 1rep=2459226 mate=163609
              predicted=0  nodes=597743722  evals=218625818
              endgame tablebase-> probes done=1  successful=1
              hashing-> 25%(raw) 22%(depth)  99%(sat)  99%(pawn)
              hashing-> 0%(exact)  19%(lower)  2%(upper)



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