Author: Tim Foden
Date: 07:57:43 11/13/01
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On November 12, 2001 at 06:22:04, Uri Blass wrote: >This position could happen in my crrespondence game > >[D]2r2rk1/p3q1pp/1p6/2bp1p2/4n3/1P2P1P1/PB3PBP/1QR1RbK1 w - - 0 25 > >If your program plays Bxe4 then it is materialistic(Bxe4 is the only move that >does not lose material) > >If it plays Rxf1 then it is not materialistic > >It seems that most programs are not materialistic based on the test that I did. >I guess also that most humans are not materialistic here and are going to prefer >Rxf1 > >Uri Well, Green Light 2.15c would seem to be one of the exceptions! :( It gives Bxe4 a score of -0.261, and Rxf1 a score of -0.610. This position shows up one of Green Light's (many!) weaknesses. :) It just doesn't understand that black has a strong attack. Cheers, Tim. -- Analysis of given position: 12 32.32 -0.288 18150k Bxe4 fxe4 26. Rxf1 Qf7 27. Be5 Ba3 28. Rc2 Qf5 29. Bd4 Qf3 30. Rd1 Rxc2 31. Qxc2 Bb4 12 35.24 -0.288 19824k Bxe4 fxe4 26. Rxf1 Qf7 27. Be5 Ba3 28. Rc2 Qf5 29. Bd4 Qf3 30. Rd1 Rxc2 31. Qxc2 Bb4 13 2:41 -0.261 86258k Bxe4 fxe4 26. Rxf1 Rcd8 27. Qc2 Rf5 28. Qd2 Rdf8 {ht} 13 2:49 -0.261 90784k Bxe4 fxe4 26. Rxf1 Rcd8 27. Qc2 Rf5 28. Qd2 Rdf8 {ht} Analysis after 25. Rxf1: 13 36.14 +0.639 21785k Nd2 26. Bxd5+ Kh8 27. Qd3 Nxf1 28. Qxf1 Rfd8 29. Qd3 Qd6 30. Rd1 Ba3 31. Bxa3 Qxa3 32. Qxf5 Qxa2 13 55.61 +0.639 32873k Nd2 26. Bxd5+ Kh8 27. Qd3 Nxf1 28. Qxf1 Rfd8 29. Qd3 Qd6 30. Rd1 Ba3 31. Bxa3 Qxa3 32. Qxf5 Qxa2 14 1:23 +0.610 48978k Nd2 26. Bxd5+ Kh8 27. Qd3 Nxf1 28. Rxf1 Bd6 29. Rd1 Be5 30. Bxe5 Qxe5 31. Bb7 Rc7 32. Qa6 Qe7 33. Bd5 14 2:30 +0.610 87106k Nd2 26. Bxd5+ Kh8 27. Qd3 Nxf1 28. Rxf1 Bd6 29. Rd1 Be5 30. Bxe5 Qxe5 31. Bb7 Rc7 32. Qa6 Qe7 33. Bd5
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