Author: Uri Blass
Date: 03:13:45 09/04/01
Go up one level in this thread
On September 04, 2001 at 05:53:35, Peter Berger wrote:
>On September 04, 2001 at 04:39:13, Eduard Nemeth wrote:
>
>>After Fritz 6c , I played today this "two knights" opening, against Tiger 14
>>on Blitz 30' Level.
>>
>>But, Tiger 14 losing in pawn endgame! :-(
>>
>>
>>[Event "Stufe=Blitz:30'."]
>>[Site "?"]
>>[Date "2001.??.??"]
>>[Round "?"]
>>[White "Chess Tiger 14.0"]
>>[Black "Nemeth,Eduard"]
>>[ECO "C56"]
>>[Result "0-1"]
>>
>>1. e4 {0} e5 {2} 2. Nf3 {0} Nc6 {2} 3. Bc4 {0} Nf6 {3}
>>4. d4 {0} exd4 {1} 5. O-O {0} Nxe4 {3} 6. Re1 {0} d5 {1}
>>7. Bxd5 {0} Qxd5 {1} 8. Nc3 {0} Qh5 {1} 9. Nxe4 {0} Be7 {3}
>>10. Bg5 {0} Bg4 {1} 11. Bxe7 {0.70/12 30} Bxf3 {4} 12. Nf6+
>>{0.76/12 34} gxf6 {3} 13. Bxf6+ {0.00/13 32} Kd7 {3}
>>14. Qxf3 {-0.19/13 33} Qxf3 {4} 15. gxf3 {-0.22/15 37}
>>Rhg8+ {3} 16. Kf1 {-0.22/15 60} Rg6 {3} 17. Bh4 {-0.06/14
>>68} f5 {31} 18. Rad1 {-0.04/13 54} Rf8 {81} 19. f4 {0.14/13
>>46} Rd6 {22} 20. f3 {0.12/13 34} Re8 {18} 21. Rxe8 {0.36/15
>>34} Kxe8 {3} 22. Bf2 {0.32/14 47} Nb4 {36} 23. Rxd4
>>{0.26/16 53} Rxd4 {3} 24. Bxd4 {-0.04/15 7} Nxc2 {10}
>>25. Bxa7 {-0.14/17 56} b6 {3} 26. a4 {-0.04/19 55} Ne3+
>>{13} 27. Ke2 {-0.08/18 37} Nd5 {2} 28. a5 {-0.04/17 40}
>>bxa5 {9} 29. Be3 {-0.14/18 25} Nxe3 {4} 30. Kxe3 {-0.16/18
>>7} c5 {2} 31. Kd3 {-0.14/21 31} Kd7 {2} 32. Kc4 {-0.18/20
>>44} Kc6 {3} 33. b3 {-1.80/22 125} Kb6 {10} 34. h3 {-1.80/21
>>25} h6 {18} 35. h4 {-2.06/23 151} h5 {2} 36. Kd3 {-3.92/23
>>200} Kb5 {3} 37. Kd2 {-25.93/20 33} c4 {7} 38. Kc3
>>{-13.71/17 18} cxb3 {6} 0-1
>>
>
>Hi Eduard,
>
>it seems to me your analysis is not to the point here although your intro (
>mentioning the pawn endgame)was .
>
>At move 24 white's position is already bad - 25. Bxa7 ?!looks somehow ugly to a
>human's eye but what should the general rule be to avoid it ? Tiger sees that it
>can free the bishop again without problems so it is trading a pair of pawns on
>the queenside and destroying the black majority - not too bad a general idea.
>
>The real problem is 29. Be3 ?? ( and I suspect this one will be hard to avoid
>for many programs ) trading into the lost pawn endgame . Sth like Kd3 instead
>might have been good enough for a draw still.
>
>pete
Deep Fritz has no problem to avoud 29.Be3
New position
4k3/B1p4p/8/p2n1p2/5P2/5P2/1P2K2P/8 w - - 0 1
Analysis by Deep Fritz:
5.Bd4--
µ (-0.75) Depth: 1/4 00:00:00
5.Bd4--
µ (-0.75) Depth: 1/4 00:00:00
5.Bd4 Nxf4+ 6.Ke3
µ (-0.75) Depth: 2/6 00:00:00
5.Bd4 Nxf4+ 6.Ke3 Nd5+ 7.Ke2
³ (-0.69) Depth: 3/8 00:00:00
5.Bd4 Nxf4+ 6.Ke3 Nd5+ 7.Kd3 a4
µ (-0.87) Depth: 4/12 00:00:00
5.Bd4 Nxf4+ 6.Ke3 Nd5+ 7.Kd3 a4 8.Kc4
µ (-0.94) Depth: 5/11 00:00:00 1kN
5.Bd4 Nxf4+ 6.Ke3 Nd5+ 7.Kd3 a4 8.h4 Nf4+ 9.Kc4
µ (-1.00) Depth: 6/13 00:00:00 5kN
5.b3!
µ (-0.97) Depth: 6/14 00:00:00 9kN
5.b3! Nxf4+ 6.Ke3 Nd5+ 7.Kd4 c6
µ (-0.87) Depth: 6/14 00:00:00 11kN
5.b3 Nxf4+ 6.Ke3 Ne6 7.f4 Kd7 8.Bb8 c5
µ (-0.97) Depth: 7/16 00:00:00 19kN
5.b3 Nxf4+ 6.Ke3 Ne6 7.f4 c5 8.Bb6 Nd4 9.Bxc5 Nxb3
µ (-0.97) Depth: 8/17 00:00:00 40kN
5.b3 Nxf4+ 6.Ke3 Ne6 7.Bd4 Kd7 8.Bc3 Nc5 9.b4 axb4 10.Bxb4
µ (-0.97) Depth: 9/18 00:00:00 84kN
5.b3 Kd7 6.Kd3 Nxf4+ 7.Kc4 Ng6 8.Bd4 Nh4
µ (-0.91) Depth: 10/20 00:00:00 251kN
5.b3 Nxf4+ 6.Ke3 Ne6 7.Bd4 Kd7 8.Bc3 Nc5 9.Bxa5 Nxb3 10.Bc3 c5
µ (-0.97) Depth: 11/22 00:00:00 392kN
5.b3 Nxf4+ 6.Ke3 Ne6 7.Kd3 Kd7 8.Be3 c5 9.Kc4 Kd6 10.f4 h6
µ (-0.91) Depth: 12/24 00:00:01 997kN
5.b3 Kd7 6.Kd3 Nxf4+ 7.Kc4 Ng6 8.Kd4 h6 9.Bc5 Ke6 10.h3 Nf4
µ (-0.94) Depth: 13/26 00:00:03 1837kN
5.b3 Kd7 6.Kd3 Nxf4+ 7.Kc4 Ng6 8.Kd4 Ke6 9.Bb8 Kd6 10.Ba7 Nh4
µ (-0.97) Depth: 14/26 00:00:04 3075kN
5.b3 Kd7 6.Kd3 Nxf4+ 7.Kc4 Ng6 8.Kd3 Ne5+ 9.Ke3 Nc6 10.Bc5 Ke6
µ (-1.00) Depth: 15/27 00:00:12 7729kN
5.Kd3!
µ (-0.97) Depth: 15/28 00:00:18 11718kN
5.Kd3 Nxf4+ 6.Ke3 Ne6 7.Kd3 a4 8.Kc4 Ng5 9.f4 Nf3 10.h3 Ne1
µ (-1.03) Depth: 16/28 00:00:29 18498kN
(Blass, Tel-aviv 04.09.2001)
Hiarcs7.32 has no idea and it even does not expect Nxe3
New position
4k3/B1p4p/8/p2n1p2/5P2/5P2/1P2K2P/8 w - - 0 1
Analysis by Hiarcs 7.32:
5.Be3 Nxe3 6.Kxe3
= (-0.14) Depth: 1 00:00:00
5.Be3 Nxe3 6.Kxe3
= (-0.14) Depth: 2/4 00:00:00
5.Be3 Nxe3 6.Kxe3
= (-0.14) Depth: 3/4 00:00:00
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4
= (-0.16) Depth: 4/9 00:00:00
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6
= (-0.20) Depth: 5/10 00:00:00 3kN
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6 8.h3
³ (-0.32) Depth: 6/14 00:00:00 11kN
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6 8.Kc4 h5
³ (-0.27) Depth: 7/17 00:00:00 33kN
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6 8.Kc4 c6 9.Kd4
³ (-0.31) Depth: 8/20 00:00:00 102kN
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6 8.Kc4 c6 9.b3 h5
³ (-0.26) Depth: 9/22 00:00:01 278kN
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6 8.Kc4 c6 9.Kb3 Kc5 10.Ka4 Kb6
= (-0.21) Depth: 10/23 00:00:04 717kN
5.Be3 Nxe3 6.Kxe3 Kd7 7.Kd4 Kd6 8.Kc4 c6 9.h3 h5 10.b3 h4
³ (-0.33) Depth: 11/26 00:00:11 1745kN
5.Be3 Kd7 6.Bd2 a4 7.Kd3 c5 8.Kc4 Kc6 9.h3 h6 10.Kd3 Kd6
= (-0.23) Depth: 12/27 00:00:37 5783kN
(Blass, Tel-aviv 04.09.2001)
Tiger14 is better and can see Nxe3 in the pv but it cannot avoid Be3.
Uri
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