Author: Drexel,Michael
Date: 14:16:48 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).
>
>SOS 99.11.03 - Movei 0.08.068
>[D]2kr3r/ppp1ppbp/2n3p1/7n/1qbPP3/2N1BNP1/PP3PBP/1R1QR1K1 b - - 0 1
>
>Analysis by Yace 0.99.56:
>
>13...Qxc3 14.bxc3 Bxa2
> +- (5.81) Depth: 1 00:00:03
>13...Nxg3 14.fxg3 Nxd4
> +- (1.80) Depth: 1 00:00:03
>13...Nxd4 14.Nxd4 Bxd4 15.Bxd4 Rxd4 16.Qxd4 Qxc3
> ± (0.80) Depth: 1 00:00:03
>13...Bf8
> = (0.00) Depth: 1 00:00:04
>13...Bf8 14.Bg5
> = (0.00) Depth: 2 00:00:04
>13...Bf8 14.Bg5 Be6
> = (0.00) Depth: 3 00:00:04
>13...Bf8 14.Bg5 Be6 15.a4
> = (0.00) Depth: 4 00:00:04
>13...Bf8 14.Bg5 Be6 15.a4 Qd6
> = (0.00) Depth: 5 00:00:04 17kN
>13...Bf8 14.Bh3+ Kb8 15.g4 Nf6 16.e5 Nd5
> = (0.00) Depth: 6 00:00:04 88kN
>13...Bf8 14.d5 Kb8 15.a3 Qxa3 16.bxa3 Nf6
> ² (0.40) Depth: 7 00:00:05 391kN
>13...Bf8 14.d5 a6 15.Ng5 Ne5 16.f4 Nd3 17.Nxf7
> ² (0.70) Depth: 7 00:00:05 391kN
>13...Qb6 14.d5 Qa5 15.Bb6 axb6 16.Na4
> ² (0.69) Depth: 7 00:00:06 724kN
>13...Qb6 14.d5 Qa6 15.g4 Bxc3 16.bxc3 Nf6 17.Nd2
> = (0.10) Depth: 7 00:00:07 724kN
>13...Qa5 14.d5 Bxc3 15.bxc3 Bxa2 16.dxc6 Rxd1 17.Rbxd1
> = (0.09) Depth: 7 00:00:07 1042kN
>13...Qa5 14.a3 Nf6 15.Nd2 Bd3 16.Bh3+ Kb8 17.Nb3
> = (0.00) Depth: 7 00:00:07 1042kN
>13...Qa5 14.Nd2 Qa6 15.Nxc4 Qxc4 16.Bh3+ Kb8 17.Bf1 Qe6 18.d5
> = (0.10) Depth: 8 00:00:09 1369kN
>13...Na5 14.a3 Qd6 15.Nd2 Bd3 16.Qxh5 gxh5 17.Nb5
> = (0.09) Depth: 8 00:00:20 5166kN
>13...Na5 14.a3 Qd6 15.Nd2 Bd3 16.Bh3+ Kb8 17.e5 Qa6
> = (0.00) Depth: 8 00:00:20 5166kN
>13...Na5 14.Bd2 Nc6 15.g4 Nf6 16.d5 Na5 17.Ne5 Rdf8 18.Nxc4
> = (0.10) Depth: 9 00:00:34 9474kN
>13...e6 14.g4 Nf6 15.Nd2 Nxd4 16.Nxc4 Qxc4 17.Qxd4 Rxd4 18.Bxd4
> = (0.09) Depth: 9 00:01:26 25042kN
>13...e6 14.g4 Nf6 15.Bh3 Kb8 16.a3 Qa5 17.e5 Ng8
> = (0.00) Depth: 9 00:01:27 25501kN
>13...e6 14.g4 Nf6 15.Bh3 Kb8 16.a3 Qa5 17.e5 Ng8 18.Nd2
> = (0.00) Depth: 10 00:01:36 29516kN
>13...e6 14.g4 Nf6 15.Bh3 Kb8 16.a3 Qa5 17.e5 Ng8 18.Nd2 Bd3
> = (0.00) Depth: 11 00:02:38 60258kN
>13...e6 14.g4 Nf6 15.Bh3 Kb8 16.a3 Qa5 17.e5 Ng8 18.Nd2 Bd3 19.Nb3
> = (0.00) Depth: 12 00:05:50 153600kN
>13...e6 14.g4 Nf6 15.Bh3 Kb8 16.a3 Qf8 17.e5 Ng8 18.Qc1 Bd3 19.Ra1 Re8
> = (0.00) Depth: 13 00:13:26 366031kN
>13...e6 14.a3 Qf8 15.Qa4 Ba6 16.e5 Bh6 17.b4 Bxe3 18.fxe3 Nf4 19.gxf4 Qxb4
>20.axb4 Nxb4
> ² (0.40) Depth: 14 00:28:37 784069kN
>13...e6 14.a3 Qb3 15.Ng5 Rd7 16.d5 exd5 17.Bh3 Qxd1 18.Bxd7+ Kxd7 19.Nxd1 dxe4
>20.Nxe4 Nf6 21.Nxf6+ Bxf6
> ² (0.70) Depth: 14 00:43:24 1065081kN
>13...Be6 14.d5 Bg4 15.dxc6 Rxd1 16.Nxd1
> ² (0.69) Depth: 14 03:14:56 109523kN
>13...Be6 14.d5 Bg4 15.Qc2 Bxf3 16.Bxf3 Ne5 17.Be2 Qa5 18.Nb5
> ² (0.69) Depth: 14 03:21:57 271323kN
>
>(Blass, Tel-Aviv 08.06.2003)
>
>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.
Maybe Movei saw that he would lose material after 14...Qb3 15.Qxb3 Nd2.
Ne7 was not a mistake, the position is lost anyway.
>
>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
4...Qxd5 is probably an inferior line.
5...Nc6 is a mistake, black should play Bg7 to keep all options.
7...Be6 is probably already the losing mistake.
IMO you can not expect Movei to play the opening well. Even a commercial program
like Chessmaster plays often very bad moves in the opening when out of book.
Pawn sacrifices which are completely unsound for example.
Michael
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