Author: Dann Corbit
Date: 16:26:43 12/22/99
Go up one level in this thread
On December 22, 1999 at 19:15:03, Vincent Lejeune wrote:
>Here's a game from ICC, RebelTiger spent more than 30 sec with its last move and
>lost on time. Last move was an underpromotion : coincidence or real trouble ?
>
>[Event "ICS game"]
>[Site "192.168.0.2"]
>[Date "1999.12.23"]
>[Round "-"]
>[White "Erikasparov"]
>[Black "RebelTiger"]
>[Result "1-0"]
>[TimeControl "60+8"]
>
>1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8.
>h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Qc7 11. Bd2 Ngf6 12. O-O-O e6 13. Qe2 O-O-O 14.
>Ne5 Nxe5 15. dxe5 Nd7 16. f4 Be7 17. Ne4 Nc5 18. Nc3 f6 19. exf6 gxf6 20.
>Be3 Kb8 21. g4 Bd6 22. Rhf1 Qe7 23. Qf2 b6 24. Qf3 Kb7 25. Nb5 Bb8 26. Nd4
>Qe8 27. b4 e5 28. fxe5 fxe5 29. Nxc6 Rxd1+ 30. Kxd1 e4 31. Qf7+ Qxf7 32.
>Rxf7+ Kxc6 33. bxc5 bxc5 34. Rf6+ Kd5 35. Ke2 Rg8 36. Rg6 Rxg6 37. hxg6 Ke6
>38. Bxh6 Kf6 39. g7 Kf7 40. Ke3 Be5 41. Kxe4 Bd4 42. Kd5 Kg8 43. c4 Kh7 44.
>a4 Bf2 45. a5 a6 46. Kc6 Bg3 47. Kb7 Bd6 48. Kxa6 Bc7 49. Kb5 Bxa5 50. Kxa5
>Kxh6 51. g8=R
>{RebelTiger forfeits on time} 1-0
A lot of chess programs will have this problem which is (I think) the played
move was not the expected move. Since it was an underpromotion, it may have
been especially clever and caused a complete research of the solution space.
You can see the same effect many times when the pv shows that move 'x' is
expected and the opponent chooses move 'y'.
I think Rebel knows about underpromotions, but I may be mistaken. Why not ask
over on the Rebel board?
http://www.rebel.nl/cgi-bin/Ultimate.cgi?action=intro
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