Author: John Merlino
Date: 20:52:13 06/08/03
Go up one level in this thread
On June 08, 2003 at 16:28:14, Uri Blass wrote:
>I want to find the mistakes of movei against
>Sos in Leo's tournament and I may use them as test positions for future
>versions.
>
>Note that the problem of finding the losing mistake is often hard to find and it
>is hard to know the exact point that the position became lost instead of
>inferior.
>
>I decided to try to find the point that movei lost material.
>I have a version of yace only material and I gave it the position
>after move 13 of white.
>
>Yace(only material) use the following values for material:
>Queen=10.01,Rook=5,Bishop=3.5,Knight=3.4,Pawn=0.8
>
>Yace only finished 46 out of 53 moves to analyze and I will not give it to
>finish iteration 14 but it seems that already at move 13 black is losing
>material(yace only material cannot finish depth 14 even after more than 5
>hours).
>In the game movei did not find the best defence
>and after 13...e6 14.a3 Qf8?(Qb3 was probably better) 15.Qa4 Ba6 16.Red1
>Ne7?(Nb8 is probably better)
>17.b4 c6 18.b5 got a clearly lost position.
>
>Here is the full game(the match ended in 2-2)
>
>[Event "WBEC4-1st Division"]
>[Site "ATHLON-MP2200"]
>[Date "2003.06.07"]
>[Round "6.1"]
>[White "SOS 99.11.03"]
>[Black "Movei 0.08.068"]
>[Result "1-0"]
>[PlyCount "67"]
>[EventDate "2003.??.??"]
>[TimeControl "40/2400:0"]
>
>1. d4 Nf6 2. c4 g6 3. g3 d5 4. cxd5 Qxd5 5. Nf3 Nc6 6. Nc3 Qa5 7. Bg2 Be6 8.
>O-O O-O-O 9. e4 Bc4 10. Re1 Bg7 11. Bf4 Nh5 12. Be3 Qb4 13. Rb1 e6 14. a3 Qf8
>15. Qa4 Ba6 16. Red1 Ne7 17. b4 c6 18. b5 cxb5 19. Nxb5 Kb8 20. Nxa7 Rd6 21. e5
>Nd5 22. exd6 Kxa7 23. Ne5 Qxd6 24. Rxb7+ Kxb7 25. Rb1+ Ka7 26. Bxd5 Rb8 27.
>Rxb8 exd5 28. Rb1 Nxg3 29. Nc6+ Qxc6 30. Qxc6 Ne2+ 31. Kh1 Bb5 32. Qxb5 Ng3+
>33. hxg3 h6 34. Qa4# {Movei->White mates} 1-0
>
>Uri
The first move that CM9000 truly does not like is 14...Qf8. The King preferred
Qb6.
However, before this move, movei is already down about 0.8 in evaluation. AFTER
this move, the eval is over 2.1. And it's all downhill from there....
jm
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