Author: Robert Hyatt
Date: 10:03:59 06/02/00
Go up one level in this thread
On June 02, 2000 at 11:43:45, Joshua Lee wrote: >I was wondering what the nodes per second was back then and how different is >Crafty from CB? I figure you get this question alot. Also if the extras CB had >were added to crafty what would happen? Thanks > In 1981 we had just ported "blitz" to the cray-1 platform. We were searching about 1K nodes per second at the point where we won the Mississippi State chess championship. I believe that was also the first time a real USCF master had lost to a computer in a tournament-time-control game. Crafty and CB are signficantly different. However, CB of 1995 and CB of 1981 are also significantly different animals... I have done my best to take the good parts of CB and include them in Crafty. Crafty has a few things CB didn't. CB has a few thing that are too expensive to do on a PC, so Crafty doesn't have those. And CB has a few things that I simply haven't gotten around to finishing in Crafty yet (singular extensions is one thing). > >P.S Anyone interested i am going through those older games and i found this >fairly easy win from a drawn game: > >[Event "?"] >[Site "ACM Detroit"] >[Date "1979.??.??"] >[White "Belle "] >[Black "Chess 4.9"] >[Result "1/2-1/2"] >[BlackElo " 4 9"] >[ECO "A79"] >[Round "4"] > >1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 >8. Be2 O-O 9. O-O Re8 10. Nd2 Na6 11. f3 Nc7 12. a4 b6 13. Nc4 Ba6 14. Bg5 h6 >15. Bh4 g5 16. Bf2 Nh5 17. Ne3 Bc8 18. Qc2 Nf4 19. Bc4 Bd7 20. Rfd1 Qf6 21. Bg3 >Nh5 22. Be1 Nf4 23. Kh1 a6 24. Bg3 b5 25. axb5 axb5 26. Rxa8 Rxa8 27. Bf1 b4 28. >Ne2 b3 29. Qb1 Nh5 30. Bf2 Nf4 31. Nc4 Nxe2 32. Bxe2 Bb5 33. Bg3 Ra4 34. Qc1 Bf8 >35. Rd2 Qd8 36. Qf1 h5 37. Kg1 h4 38. Bf2 Bg7 39. Ne3 Bxe2 40. Qxe2 Ra1+ 41. Rd1 >Ra2 42. Qd3 Rxb2 43. Nc4 Rc2 44. e5 Bxe5 45. Nxe5 dxe5 46. Qxb3 Re2 47. Kf1 c4 >48. Qb7 Ra2 49. Bb6 h3 50. Qxc7 Qf6 51. Qd8+ Qxd8 52. Bxd8 Rxg2 53. Re1??? c3 >54. Rxe5 c2 55. Re8+ Kg7 56. Bxg5 Rxg5 57. Rc8 Rg2 58. d6 Rxh2 59. d7 Rd2 60. >Kg1 Rxd7 61. Rxc2 Rd3 62. Rf2 Kf6 63. Kh2 1/2-1/2 > >53. d6 Rxh2 54. Kg1 Rg2+ 55.Kh1 and the eval will only get better from +- 5.91 > >too bad i couldn't find a win for black:( can you? I was present at that tournament. It was a wild affair (that game) with both sides failing high, failing low, etc. Chess 4.x was searching about 2500 nodes per second, Belle was searching about 5,000 nodes per second.
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