Author: Kurt Utzinger
Date: 15:54:09 12/18/01
In the position shown below Fritz 7a sees that 1...Rxb2 is a fault, but after making this move, the program is unable to win a piece with 2.0-0-0 and so we must assume that there is a castling bug in Fritz7: [D] 1r2k1nr/p3ppbp/4b1p1/8/2pnB2N/2N1B1P1/PPP2P1P/R3K2R b KQk - 0 1 Analysis by Fritz 7: 1...Txb2 2.0-0-0 Se2+ 3.Sxe2 Ld7 4.a3 a6 5.Sf3 +- (2.15) Tiefe: 8/22 00:00:00 329kN 1...a6! +- (2.12) Tiefe: 8/22 00:00:00 355kN 1...a6! +- (1.96) Tiefe: 8/22 00:00:00 371kN 1...a6! +- (1.65) Tiefe: 8/22 00:00:00 394kN 1...a6! ± (1.03) Tiefe: 8/22 00:00:00 408kN 1...a6 2.Td1 Sf5 3.Sxf5 Lxf5 4.Lxf5 Lxc3+ 5.bxc3 gxf5 6.Ld4 f6 = (-0.13) Tiefe: 8/24 00:00:01 777kN 1...Ld7! = (-0.16) Tiefe: 8/24 00:00:01 897kN 1...Ld7! ³ (-0.32) Tiefe: 8/24 00:00:01 930kN 1...Ld7 2.a3 Txb2 3.0-0-0 Sb5 4.Kxb2 Sxc3 5.Ld4 Sxd1+ 6.Txd1 ³ (-0.41) Tiefe: 8/24 00:00:01 1206kN 1...Lg4! ³ (-0.44) Tiefe: 8/24 00:00:02 1468kN 1...Lg4 2.f3 Ld7 3.Sd1 ³ (-0.50) Tiefe: 8/24 00:00:02 1614kN 1...Lg4 2.f3 Ld7 3.Sd1 Sc6 4.Tb1 Sf6 5.Lxc6 Lxc6 6.Lxa7 ³ (-0.41) Tiefe: 9/24 00:00:03 2442kN 1...Ld7! ³ (-0.44) Tiefe: 9/24 00:00:03 2643kN 1...Ld7 2.a3 Sb5 3.Sd1 Sf6 4.Lg2 Sg4 5.Lf4 Sd4 6.Lxb8 ³ (-0.57) Tiefe: 9/24 00:00:04 3123kN 1...Ld7 2.a3 Sb5 3.Sd1 Sd6 4.Lg2 a6 5.Sf3 Lxb2 6.Tb1 ³ (-0.60) Tiefe: 10/27 00:00:07 5143kN 1...Ld7-- ³ (-0.32) Tiefe: 11/29 00:00:11 8244kN 1...Ld7 2.0-0-0 Sb5 3.Sxb5 Txb5 4.Ld4 e5 5.a4 Ta5 6.Lc3 Txa4 7.f4 = (0.00) Tiefe: 11/34 00:00:14 9820kN 1...a5! = (0.03) Tiefe: 11/34 00:00:17 12171kN 1...a5! = (-0.13) Tiefe: 11/34 00:00:20 15077kN 1...Lg4! = (-0.16) Tiefe: 11/34 00:00:25 18348kN 1...Lg4! ³ (-0.32) Tiefe: 11/34 00:00:28 20489kN 1...Lg4 2.Sd1 f5 3.Lxd4 Lxd4 4.Lc6+ Kf8 5.c3 Lc5 6.Sf3 Sf6 7.h3 Lh5 ³ (-0.44) Tiefe: 11/34 00:00:36 26688kN (Utzinger, Wetzikon 19.12.2001) Fritz 7 - Utzinger,K 4k1nr/p3ppbp/4b1p1/8/2pnB2N/2N1B1P1/PrP2P1P/R3K2R w KQk - 0 1 Analysis by Fritz 7: 2.Tb1! -+ (-1.68) Tiefe: 7/22 00:00:00 320kN 2.Tb1 Sb5 3.Lc6+ Ld7 4.Lxd7+ Kxd7 5.Td1+ Kc6 6.Sxb5 Kxb5 7.Td5+ Ka6 8.Kd2 Txa2 -+ (-1.87) Tiefe: 8/24 00:00:00 537kN 2.Kd2! -+ (-1.84) Tiefe: 8/24 00:00:00 591kN 2.Kd2! -+ (-1.68) Tiefe: 8/24 00:00:00 685kN 2.Kd2 Sf6 3.Lxd4 Sxe4+ 4.Sxe4 Lxd4 5.Sf3 Lg7 -+ (-1.46) Tiefe: 8/24 00:00:01 852kN 2.Kd2 Sf6 3.Lxd4 Sxe4+ 4.Sxe4 Lxd4 5.Sf3 Lg7 -+ (-1.59) Tiefe: 9/26 00:00:01 1347kN 2.Kd2 Sf6 3.Lxd4 Sxe4+ 4.Ke3 Sf6 5.Kd2 0-0 6.Tab1 Txb1 -+ (-1.50) Tiefe: 10/28 00:00:04 2953kN 2.Kd2 Sf6 3.Lxd4 Sxe4+ 4.Ke3 Sf6 5.Kd2 Tb8 6.Sf3 -+ (-1.53) Tiefe: 11/29 00:00:09 7201kN 2.Kd2 Sf6 3.Lxd4 Sxe4+ 4.Ke3 Sf6 5.Kd2 Tb8 6.Sf3 -+ (-1.46) Tiefe: 12/31 00:00:23 17966kN Kurt (Utzinger, Wetzikon 19.12.2001)
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