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Subject: big strategic problem in modern chessprograms

Author: Thomas Lagershausen

Date: 06:49:28 03/02/03

<P align="left"><FONT color="black"><FONT color="black" size="+1"><B>Rebel 12
Beta 2 - Delfi 4.0</B></FONT><BR><FONT color="black"><I>Main line in the french
openingsystem</I></FONT><BR><TABLE border="0" cellpadding="0"
cellspacing="3"><TR><TD><TABLE bgcolor="#000000" border="3" cellpadding="1"
cellspacing="0"><TR><TD><TABLE border="0" bgcolor="#BCBCC5" cellpadding="0"
cellspacing="0"><TR><TD align="center" width="30" height="30">&nbsp;</TD><TD
align="center" width="38" height="30"><B><FONT
color="black">a</FONT></B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">b</FONT></B></TD><TD align="center"
width="38" height="30"><B><FONT color="black">c</FONT></B></TD><TD
align="center" width="38" height="30"><B><FONT
color="black">d</FONT></B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">e</FONT></B></TD><TD align="center"
width="38" height="30"><B><FONT color="black">f</FONT></B></TD><TD
align="center" width="38" height="30"><B><FONT
color="black">g</FONT></B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">h</FONT></B></TD><TD align="center"
width="30" height="30">&nbsp;</TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;8&nbsp;</FONT></B></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/br1.gif" border="0" alt=" BR "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bb1.gif" border="0" alt=" BB "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/br1.gif" border="0" alt=" BR "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bk1.gif" border="0" alt=" BK "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD align="center"><B><FONT
color="black">&nbsp;8&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;7&nbsp;</FONT></B></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bn1.gif" border="0" alt=" BN "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD align="center"><B><FONT
color="black">&nbsp;7&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;6&nbsp;</FONT></B></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/bq1.gif" border="0" alt=" BK "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD align="center"><B><FONT
color="black">&nbsp;6&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;5&nbsp;</FONT></B></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/bb1.gif" border="0" alt=" BB "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD align="center"><B><FONT
color="black">&nbsp;5&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;4&nbsp;</FONT></B></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/bp1.gif" border="0" alt=" BP "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/wb1.gif" border="0" alt=" WB "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD align="center"><B><FONT
color="black">&nbsp;4&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;3&nbsp;</FONT></B></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD align="center"><B><FONT
color="black">&nbsp;3&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;2&nbsp;</FONT></B></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wp1.gif" border="0" alt=" WP "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE"><IMG
src="http://www.marochess.de/php/chesspieces/wq1.gif" border="0" alt=" WQ "
width="38" height="38"></TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wn1.gif" border="0" alt=" WN "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD align="center"><B><FONT
color="black">&nbsp;2&nbsp;</FONT></B></TD></TR><TR><TD align="center"><B><FONT
color="black">&nbsp;1&nbsp;</FONT></B></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wk1.gif" border="0" alt=" WK "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wr1.gif" border="0" alt=" WR "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wb1.gif" border="0" alt=" WB "
width="38" height="38"></TD></TD><TD bgcolor="#397AAE" width="38"
height="38">&nbsp;</TD></TD><TD bgcolor="#9EC2EF"><IMG
src="http://www.marochess.de/php/chesspieces/wr1.gif" border="0" alt=" WR "
width="38" height="38"></TD></TD><TD align="center"><B><FONT
color="black">&nbsp;1&nbsp;</FONT></B></TD></TR><TR><TD align="center"
width="30" height="30">&nbsp;</TD><TD align="center" width="38"
height="30"><B><FONT color="black">a</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">b</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">c</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">d</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">e</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">f</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">g</B></TD><TD align="center" width="38"
height="30"><B><FONT color="black">h</B></TD><TD align="center" width="30"
height="30">&nbsp;</TD></TR></TABLE></TD></TR></TABLE></TD><TD
valign="bottom"><IMG src="http://www.marochess.de/php/chesspieces//w2move.gif"
border="0" alt=" white to move " width="29" height="29"></TD></TR><TR><TD
align="center" colspan="2" width="399"><FONT color="black" size="1"><A
href="http://www.marochess.de/chess/tools/chessdiag/" target="_blank">ChessDiag
V1.01  (12-OCT-2002)</A></FONT></TD></TR></TABLE><FONT color="black">With
17.h5-h6 ?? white lost any perspective to open the kingside for his pieces after
the obviose ..g7-g6</FONT><BR><FONT color="black">Fritz 8, Hiarc 8, Tiger and
Shredder also blunder in this position.The right plan is 17.g5 with the idear to
open lines with a later g6 and equal play.The one and only program to understand
this position is Junior 7 at the moment.</FONT><BR></FONT></P><P
align="left"><FONT color="black" face="Helvetica"
size="-1">r1b2rk1/3n1ppp/1q2p3/2bpP2P/pp1B1PP1/8/PPPQN3/1K1R1B1R w - - 0
1</FONT>

The position is strategically lost after this.I have seen this blunder in
hundreds of computergames.How many games will computer lose with this
nonunderstanding of this position in the future?

Especially against humans this will be a big weakness in future battles.

[Event "Athlon 1700+"]
[Site "40moves in 20"]
[Date "??.??.????"]
[Round "4"]
[White "Rebel12B2"]
[Black "Delfi 4.0"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4
8. Nxd4 Bc5 9. Qd2 O-O 10. O-O-O a6 11. Kb1 Nxd4 12. Bxd4 b5 13. h4 b4
14. Ne2 { 00:00:44 13.00  0.30  Se2 a5 h5 h6 g4 La6 Le3 Lxe3 Dxe3 Tc8 Sd4
Lxf1 Thxf1 Dh4 Tg1  (c) } 14... a5 15. g4 { 00:00:23 13.00  0.32  g4 La6
h5 h6 g5 hxg5 h6 gxh6 Txh6 Tb8 De3  (c) } 15... Qb6 16. h5 { 00:00:52 12.00
 0.27  h5 La6 h6 g6 Sc1 a4 Lxa6 Txa6 Dd3 Lxd4 Dxd4 Dxd4 Txd4  (c) } 16...
a4 17. h6 { 00:00:30 11.00  0.25  h6 g6 De3 La6 Lxc5 Dxc5 Dxc5 Sxc5 Sd4
Se4 Lxa6 Txa6 Sb5  (c) } 17... g6 18. Nc1 { 00:00:00 11.03  0.14  Sc1 Lb7
Lg2 a3 b3 Tfc8 Se2 Da6 La1  (c) } 18... a3 19. b3 { 00:00:15 11.00  0.13
 b3 Lb7 Lxc5 Sxc5 Dd4 Da5 Sd3 Sa6 Kc1 Tac8  (c) } 19... Rb8 20. Qe3 { 00:00:58
12.00  0.15  De3 f6 exf6 Lxd4 Dxd4 Dxd4 Txd4 Sxf6 g5 Se4 Sd3  (c) } 20...
Bb7 21. Rh2 { 00:00:28 11.00  0.11  Th2 Tbc8 Thd2 Tfd8 g5 Da5 Sd3 Lb6 Kc1
La6 Lxb6 Sxb6  (c) } 21... Bc6 22. Ne2 { 00:00:23 12.00  0.26  Se2 Lb5
f5 Tbe8 Lxc5 Dxc5 Dxc5 Sxc5 c4 bxc3 Sxc3 Lxf1 Txf1  (c) } 22... Rbc8 23.
f5 { 00:00:28 11.00  0.29  f5 Lb7 Sc1 Lxd4 Txd4 Dc5  (c) } 23... Bb5 24.
Bxc5 { 00:02:04 12.00  0.07  Lxc5 Sxc5 Sg3 Lxf1 Txf1 Dc7 Dd4 Sd7 Te1 Da5
Df4 Tc3 fxg6 fxg6  (c) } 24... Qxc5 25. Nd4 { 00:00:33 13.00  0.22  Sd4
Lxf1 Txf1 De7 fxg6 fxg6 Thh1 Tf7 De1 Tff8 Txf8 Kxf8 Tf1 Ke8 Dg3  (c) }
25... Bxf1 26. Rxf1 { 00:00:00 15.00  -0.09  Txf1 Dc3 Dxc3 Txc3 Te1 Tg3
fxe6 Sxe5 The2 Txg4 Sb5 Te4  (c) } 26... exf5 27. gxf5 { 00:00:11 11.00
 0.17  gxf5 Tce8 fxg6 fxg6 Txf8 Sxf8 Te2 Se6 Sxe6 Dxe3 Txe3 Txe6 Kc1 Kf7
 (c) } 27... Rce8 28. fxg6 { 00:00:00 14.00  0.22  fxg6 fxg6 Txf8 Sxf8
Te2 Se6 Sxe6 Dxe3 Txe3 Txe6 Kc1 Kf7  (c) } 28... hxg6 29. Rh3 { 00:00:35
11.04  0.23  Th3 Sxe5 Dg5 Sd7 Td1 Kh7 Kc1 Tg8 Tf1  (c) } 29... Nxe5 30.
Qf4 { 00:00:00 12.08  0.01  Df4 f6 Td1 Kh7  (c) } 30... Nd7 31. Qd2 { 00:00:23
11.00  -0.03  Dd2 Kh7 Tf4 f6 Tf1 Te4 Td1 Tg8 Tg3 f5 Ka1  (c) } 31... Re4
32. Ne2 { 00:00:23 11.02  0.00  Se2 Dd6 Sd4 Dc5 Se2 Kh7 Sf4 Dd4 Dc1 Sf6
Td1 De5  (c) } 32... Kh7 33. Nf4 { 00:00:31 11.00  -0.07  Sf4 Dd6 Th2 Df6
 (c) } 33... d4 34. Rg3 { 00:00:29 11.01  -0.14  Tg3 Se5  (c) } 34... Qd6
35. Rgg1 { 00:00:16 10.00  -0.11  Tgg1 Tfe8 Tg2  (c) } 35... Ne5 36. Nh3
{ 00:00:32 12.00  0.05  Sh3 Kh8 Sg5 Th4 Df2 Th5 Se4  (c) } 36... Rh4 37.
Ng5+ { 00:00:24 12.00  0.12  Sg5+ Kh8 Df2 Th5 Se4  (c) } 37... Kh8 38.
Qf2 { 00:00:00 12.00  0.00  Df2 Th5 Se4  (c) } 38... Rh5 39. Ne4 { 00:00:00
12.01  -0.41  Se4 Dd8 Td1  (c) } 39... Qb6 40. Ng3 { 00:00:16 11.00  0.21
 Sg3 Tg5 Th1 f6 Te1 Sg4 Dd2 Se3 Se2 Kh7 Sxd4  (c) } 40... Rh4 41. Ne2 {
00:00:45 11.07  -0.10  Se2 Te4 Sf4 Dc6 Dd2 Dc5 Se2 Sg4 Th1 Se3 Tf4  (c)
} 41... Qd8 42. Rh1 { 00:00:14 11.00  -0.27  Th1 Txh1 Txh1 d3  (c) } 42...
Rxh1 43. Rxh1 { 00:00:00 13.00  -0.50  Txh1 d3  (c) } 43... d3 44. Rd1
{ 00:01:11 11.09  -0.85  Td1 dxc2+ Kxc2 Dg5  (c) } 44... Ng4 45. Qd4+ {
00:00:09 12.00  -1.06  Dd4+ Dxd4  (c) } 45... Qxd4 46. Nxd4 { 00:00:00
15.00  -1.32  Sxd4 Td8 Txd3  (c) } 46... Nf2 47. Rd2 { 00:00:00 15.04
-2.01  Td2 Se4 Txd3  (c) } 47... Re8 48. Nf3 { 00:00:34 14.02  -2.89  cxd3
 [failed...] (c) } 48... Ne4 49. Rxd3 { 00:00:00 15.00  -3.07  Txd3 Sc3+
Ka1 g5 h7 f5 Td6  (c) } 49... Nc3+ 50. Kc1 { 00:00:03 13.00  -3.34  Kc1
Kh7 Txc3 bxc3 Kd1 f5  (c) } 50... Kh7 51. Nd4 { 00:00:40 13.08  -3.44
Sd4 Te4  (c) } 51... Kxh6 52. Rh3+ { 00:00:50 13.00  -3.20  Th3+ Kg7 Kd2
 (c) } 52... Kg7 53. Kd2 { 00:00:05 14.00  -3.47  Kd2 Sxa2 Th1  (c) } 53...
Nxa2 54. Rh1 { 00:00:00 14.00  -3.46  Th1 Sc3 Sc6  (c) } 54... Rc8 55.
Ke3 { 00:00:15 12.00  -3.64  Ke3 Sc3  (c) } 55... Nc3 56. Kd3 { 00:00:07
13.08  -3.96  Kd3 a2 Ta1 Sd5 Txa2  (c) } 56... f5 57. Rf1 { 00:00:27 12.00
 -4.16  Tf1 Kf6 Te1 Se4  (c) } 57... a2 58. Ra1 { 00:01:12 15.00  -4.59
 Ta1 Kf6 Se2  (c) } 58... Kf6 59. Ne2 { 00:00:31 15.00  -7.08  Se2 Td8+
Ke3 Td1 Txa2 Sxa2  (c) } 0-1

TL

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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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