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Subject: Re: BUG in Shredder 7.04 ?

Author: Eduard Nemeth

Date: 10:09:54 03/15/03

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On March 15, 2003 at 12:28:09, Drexel,Michael wrote:

>[D] r4rk1/pp2bpp1/1qn1pn1p/6B1/R1PpP2P/3P2PN/2P2PB1/1N1Q1R1K b - - 0 1
>
>Analysis by Shredder 7.04:
>
>1. +- (2.67): 1...a5 2.Nf4 Rfc8 3.Kg1 Qb2 4.Bxf6 Bxf6 5.Nd2 Be5 6.Qc1 Qc3 7.Nb1
>Bxf4 8.gxf4 Kh7
>2. +- (2.69): 1...a6 2.Kg1 e5 3.f4 Rfe8 4.Nd2 hxg5 5.hxg5 Qb2 6.gxf6 gxf6
>3. +- (2.69): 1...Nd7 2.Bxe7 Nxe7 3.Nf4 Nc6 4.c3 Nde5 5.cxd4 Nxd4 6.Kg1 Rfd8
>7.Nd2 a5 8.Qb1 Qc7
>4. +- (2.73): 1...Rfc8 2.c3 dxc3 3.Nxc3 Rd8 4.Kg1 a5 5.Nf4 Qc5 6.Qb3 hxg5 7.hxg5
>Ng4 8.Qxb7
>5. +- (2.79): 1...Rac8 2.Nf4 Qc5 3.Bxf6 Bxf6 4.Kg1 b5 5.cxb5 Qxb5 6.Ra2 a5 7.Na3
>Ne5 8.Nxb5 Nf3+
>6. +- (2.69): 1...Qc7 2.Kg1 e5 3.f4 Rfe8 4.fxe5 Nxe5 5.Bxf6 Bxf6 6.Nf4 Qxc4
>7.dxc4 Nf3+ 8.Bxf3
>7. +- (2.70): 1...Rfd8 2.Nf4 Qc7 3.Kg1 a5 4.Nd2 Qe5 5.Nf3 Ba3 6.Nxe5
>8. +- (2.70): 1...Rfe8 2.Nf4 a5 3.Kg1 Rec8 4.Bxf6 Bxf6 5.Nd2 Qb2 6.Qc1 Qc3 7.Ra3
>Rd8
>9. +- (2.71): 1...hxg5 2.hxg5 Nd7 3.f4 Nc5 4.Ra3 Nd7 5.Rb3 a5 6.Rxb6 Nxb6
>
>depth 12
>
>Analysis by Shredder 7.04:
>
>1. +- (2.83): 1...Nd7 2.Bxe7 Nxe7 3.Nf4 a5 4.Qh5 Nc6 5.Qb5 Qc7 6.Kg1 b6 7.c3 Nc5
>8.Ra3 Rad8
>2. +- (2.85): 1...hxg5 2.hxg5 Nd7 3.f4 Nc5 4.Ra3 a5 5.e5 a4 6.Qh5 Qb2 7.g6 fxg6
>8.Qxg6
>3. +- (2.95): 1...Qc5 2.f4 Nd7 3.Nd2 Qb6 4.Bxe7 Nxe7 5.Qa1 Nc6 6.Rb1 Qc7 7.Ra3
>e5 8.c3 dxc3 9.Qxc3 Rad8
>4. +- (3.00): 1...e5 2.f4 hxg5 3.hxg5 Nd7 4.f5 Qb2 5.Nd2 Qc3 6.f6 gxf6 7.gxf6
>Nxf6 8.Ng5 a5
>5. +- (3.13): 1...Qd8 2.f4 e5 3.fxe5 Nxe5 4.Bxf6 Bxf6 5.Nf4 Nc6 6.Qh5 Be5 7.Qf5
>Qd6 8.Nd2 Rac8 9.Kg1
>6. +- (3.14): 1...Nh7 2.Bxe7 Nxe7 3.Nf4 Nc6 4.c3 Rfd8 5.cxd4 Qxd4 6.Nd2 a5 7.Qb1
>Qa7 8.Qb5 Nf6 9.Rxa5
>7. +- (3.19): 1...Ne5 2.f4 Neg4 3.Bxf6 Nxf6 4.Nd2 Bb4 5.e5 Nd7 6.Rxb4 Qxb4
>7.Bxb7
>8. +- (3.24): 1...a5 2.Bxf6 Bxf6 3.g4 Be7 4.g5 h5 5.Nd2 Bb4 6.Nb3 g6 7.Qf3 e5
>8.Rfa1
>9. +- (3.57): 1...Rfd8 2.Bxf6 Bxf6 3.g4 Qc5 4.g5 Be7 5.gxh6 gxh6 6.Qg4+ Kf8
>7.Nf4
>
>depth 15
>
>{D] r4rk1/pp2bpp1/1qn1pn2/6p1/R1PpP2P/3P2PN/2P2PB1/1N1Q1R1K w - - 0 2
>
>Analysis by Shredder 7.04:
>
>1. = (-0.19): 2.Nxg5 Nd7 3.Kg1 a5 4.Qh5 Nf6 5.Qd1 Rfd8 6.Nd2 Qc7 7.Qe2 Bb4 8.f4
>e5
>2. ³ (-0.46): 2.hxg5 Nd7 3.f4 Nc5 4.Ra2 Nb4 5.Rb2 a5 6.Qh5 Rfc8 7.g6 fxg6 8.Qxg6
>3. µ (-1.17): 2.e5 Nxe5 3.hxg5 Nfd7 4.f4 Nc5 5.Ra2 Nc6 6.Qh5 Nb4 7.Rb2 a5 8.g6
>4. -+ (-1.54): 2.f4 gxh4 3.gxh4 e5 4.h5 Qc5 5.h6 gxh6 6.c3 dxc3 7.Nxc3 Rad8
>5. -+ (-1.59): 2.Nd2 gxh4 3.gxh4 a5 4.Ng5 Bb4 5.Qe2 Rfe8 6.f4 e5 7.Nb3 Qc7 8.c3
>dxc3
>6. -+ (-1.74): 2.Kg1 gxh4 3.gxh4 a5 4.Ng5 Bd6 5.f4 e5 6.f5 Rfc8 7.Nd2 Kf8 8.Qe2
>Nb4
>7. -+ (-1.82): 2.Rg1 g4 3.Nf4 a6 4.Rf1 Ne5 5.Kg1 Bb4 6.Nd2 Rfc8 7.Nb3 Bc3 8.c5
>8. -+ (-1.89): 2.Ra2 gxh4 3.gxh4 Ne5 4.Rg1 a5 5.f4 Neg4 6.e5 Ne3 7.Qf3 Nfg4
>8.Qxb7 Bxh4
>9. -+ (-1.92): 2.c5 Qxc5 3.Nxg5 Nd7 4.f4 b5 5.Ra1 Bxg5 6.fxg5 a5 7.Kh2
>
>
>No Bug of course.
>A wrong evaluation on purpose.
>
>Fritz 8.0.0.8 is in fact somewhat better here Eduard:
>
>Analysis by Fritz 8.0.0.8:
>
>1. ² (0.37): 1...hxg5 2.hxg5 Nd7 3.Nd2 Qb2 4.Ra1 a5 5.Rb1 Qa3 6.Qh5 a4
>2. +- (2.69): 1...Nd7 2.Bxe7 Nxe7 3.f4 Nc5 4.Ra3 a6 5.Ng1 f5 6.e5 Qb2 7.Nf3 b6
>8.h5
>3. +- (2.84): 1...Qc7 2.Bxf6 Bxf6 3.f4 Be7 4.e5 Qd7 5.Ra1 a5 6.Nd2 Nb4 7.Be4 f5
>8.exf6 Bxf6
>4. +- (2.84): 1...a6 2.Bxf6 Bxf6 3.f4 Qc7 4.e5 Be7 5.c3
>5. +- (2.94): 1...Qd8 2.Bd2 Nd7 3.f4 Qc7 4.e5 a6 5.Ra2 f5 6.exf6 Rxf6 7.Qe2 Raf8
>6. +- (2.97): 1...e5 2.Bxf6 Bxf6 3.Nd2 a6 4.f4 Qc7 5.c5 Nb8 6.Nb3 Nd7 7.Ra5 b6
>8.cxb6 Nxb6
>7. +- (2.97): 1...Rfb8 2.Bxf6 Bxf6 3.f4 e5 4.Nd2 Qc7 5.Qh5 b5
>8. +- (3.00): 1...Qb2 2.Bxf6 Bxf6 3.f4 e5 4.Nd2 a6 5.Qb1 Qc3 6.Nf3 Rfb8
>9. +- (3.00): 1...Rab8
>
>
>[D] r4rk1/pp2bpp1/1qn1pn1p/6B1/R1PpP2P/3P2PN/2P2PB1/1N1Q1K1R b - - 0 1
>
>Analysis by Fritz 8.0.0.8:
>
>1. +- (2.22): 1...hxg5 2.hxg5 Ng4 3.Nd2 Nce5 4.Nb3 a6 5.Kg1 Rad8 6.Ra2 Rc8 7.Bf3
>Nxf3+ 8.Qxf3
>2. +- (2.25): 1...Nd7 2.Bxe7 Nxe7 3.h5 Nc5 4.Ra3 a6 5.Kg1 Qc7 6.Nd2 b5 7.e5 b4
>8.Ra2 Rab8 9.Qe2
>3. +- (2.37): 1...Rfb8 2.Bxf6 Bxf6 3.f4 Qb2 4.e5 Be7 5.Kf2 a6 6.Qc1 Qb6 7.Rf1
>Qc7 8.Kg1 b5
>4. +- (2.37): 1...Qb2 2.Bxf6 Bxf6 3.Nd2 a6 4.Kg1 b5 5.Ra1 Rfc8 6.f4 e5 7.Kh2 Qc3
>5. +- (2.34): 1...Qc7 2.Bxf6 Bxf6 3.Nd2 Rfb8 4.f4 Be7 5.Nb3 Qd7 6.Kf2 a6 7.Rf1
>Ne5
>6. +- (2.34): 1...a6 2.Bxf6 Bxf6 3.Nd2 Qc7 4.Qa1 Ne5 5.Kg1
>7. +- (2.34): 1...Rab8 2.Bxf6 Bxf6 3.Nd2 Qc7 4.Qh5 Be7 5.Kg1
>8. +- (2.37): 1...Rfc8 2.Bxf6 Bxf6 3.Nd2 Qc7 4.h5 Rab8 5.Qa1 b5 6.Ra6 bxc4
>7.Nxc4 Rb5 8.Kg1
>9. +- (2.44): 1...Ne5 2.Bxf6 Bxf6 3.Nd2 Qb2 4.h5 a6 5.Nb3 Rfc8 6.Ra1 b5 7.f4 Nc6
>8.e5 bxc4
>
>So at least Fritz is able to understand: There is a difference. :)
>
>Michael

Im Prinzip hast Du Recht. Seit Deep Shredder nimmt Shredder keine Trojaner mehr
an, nur:

solche Positionen kommen in der Praxis tatsächlich kaum vor, hingegen kommen
solche Stellungen wo Fritz 8.0023 auf e4 nicht nimmt ofter vor.

Glücklich bein ich dennoch nicht dass Shredder sowas nötig hat, aber ich schaffe
Shredder 5 (also den ohne Anti-Trojaner-Code) in 17 Moves Mate auf
Tourn Level.

Regards,
Eduard



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