Author: K. Burcham
Date: 20:32:08 10/10/01
just another game that junior7 is wearing special xray glasses.
i did find that shredder5 could also see the problems here.
but i will not pat shredder5 on the back.
shredder5 has had games when it lost to junior when
it could not see winning lines at all. and score jumps several points.
this was a game, chess tiger lost to junior7. posted earlier by sune.
the losing move was 13...Ng4 by chess tiger 14.
it seems that 10...0-0 is not in my ct.tbk book for B89 Sicilian/Sozin Attack.
instead tiger 14 wants 10...Na5. and only shows this move for B89, yet tiger
chose this other move during the game. not sure how this was possible if we have
same book. but i did notice in analysis mode, tiger does choose 0-0 more than
once instead of 10...Na5.
also i did notice that 10...0-0 is one of the moves in shredder5 book for B89.
[Event "40/2"]
[Site "Stuttgart"]
[Date "2001.10.06"]
[Round "?"]
[White "Junior 7"]
[Black "Chess Tiger 14.0"]
[Result "1-0"]
[ECO "B89"]
[PlyCount "39"]
[EventDate "2001.10.06"]
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 a6 8. Qe2
Qc7 9. O-O-O Be7 10. Bb3 O-O {end of book-Nunn} 11. g4 {0.37/17 144} 11... Nxd4
{-0.58/15 232} 12. Rxd4 {0.26/17 155} 12... b5 {-0.60/15 429} 13. g5 {0.30/18 1
} 13... Ng4 {-0.56/16 226} 14. Qxg4 {0.81/17 292} 14... e5 {0.34/17 1627} 15.
Qh5 {1.36/20 1} 15... exd4 {0.15/13 32} 16. Nd5 {1.66/18 741} 16... Qa7 {
2.62/15 1049} 17. Nf6+ {5.16/16 576} 17... Bxf6 {3.22/15 0} 18. gxf6 {
5.46/17 172} 18... Qc5 {3.46/14 721} 19. Bd5 {6.07/16 115} 19... Qxd5 {
11.18/13 1254} 20. exd5 {6.73/22 1} 1-0
Sune
Engine: Shredder 5
by Stefan Meyer-Kahlen
9.01 0:01 +1.04 13...Nd7 14.f4 Nc5 15.Rhd1 Nxb3+ 16.axb3 Bb7 17.h4 Rac8
18.Kb1 Qa5 (376.060) 312.8
10.01 0:05 +0.89 13...Nd7 14.h4 Nc5 15.h5 Rd8 16.g6 Bf6 17.gxh7+ Kxh7 18.h6
Nxb3+
19.axb3 Bxd4 20.hxg7+ Kxg7 21.Bxd4+ Kf8 (1.455.507) 283.6
11.01 0:11 +0.69 13...Nd7 14.h4 Nc5 15.h5 Rd8 16.g6 Nxb3+ 17.axb3 Bf6
18.gxh7+ Kxh7 19.Rd3 b4 20.Na2 Bb7 (3.153.708) 277.3
12.01 0:25 +0.79 13...Nd7 14.h4 Nc5 15.h5 Bb7 16.h6 Nxb3+ 17.axb3 g6 18.f4
f5 19.gxf6 Bxf6 20.Rd3 Rac8 (6.929.509) 274.4
13.01 0:55 +0.75 13...Nd7 14.h4 Nc5 15.h5 Qa5 16.g6 Bf6 17.gxh7+ Kh8 18.h6
Nxb3+ 19.cxb3 Bd7 20.Rxd6 Qxa2 (15.047.653) 272.3
14.01 7:21 +0.74 13...Nd7 14.a3 Bb7 15.f4 d5 16.exd5 Bxa3 17.Kb1 Bd6 18.Re1
Nc5 19.Ba2 (115.458.813) 261.6
best move: Nf6-d7 time: 14:11.444 min n/s: 266.264 nodes: 226.707.680
this is the losing move chosen by chess tiger 14. here ct14 chooses 13...Ng4.
13...Ng4 has been taken out of the shredder5 book, only choice is Nd7 and
shredder5 is still in book.
at this point ct14 shows out of book for move 13.
eval for 13...Ng4 shredder5 jumps to +3.13 almost a 4 point jump, if it chooses
tigers move.
eval for 13...Ng4 tiger14 -.40 at depth 17. in this position the difference in
eval is almost 4 points between the two programs.
[D] r1b2rk1/2q1bppp/p2ppn2/1p4P1/3RP3/1BN1B3/PPP1QP1P/2K4R b - - 0 1
next move is 14. Qxg4
big difference in eval. but finally tiger begins to see the problems.
maybe the eval problem is tigers four advanced pawns on opponents king, not
sure.
also tiger has rook to opponents bishop, so maybe this eval is also material
difference.
all scores are for white...
after 13...Nxg4. here is eval for:
depth 18 shredder5 +2.48 chess tiger 14 -.18
after 14. Qxg4. here is eval for:
depth 16 shredder5 +3.75 chess tiger 14 .00
after 14...e5. here is eval for:
depth 18 shredder5 +4.07 chess tiger 14 +.92
after 15. Qh5. here is eval for:
depth 17 shredder5 +3.50 chess tiger 14 +2.10
after 15...exd4 here is eval for:
depth 17 shredder5 +4.07 chess tiger 14 +2.35
after 16...Qa7 here is eval:
depth 15 shredder +4.50 chess tiger 14 +3.10
after 18...Qc5 here is eval for:
depth 14 shredder5 +10.38 chess tiger 14 +4.26
position after 18...Qc5
[D] r1b2rk1/5ppp/p2p1P2/1pq4Q/3pP3/1B2B3/PPP2P1P/2K4R w - - 0 1
final analysis 18...Qc5
12.02 4:11 +4.47++ 6.Bd5 Bf5 7.Rg1 Bxe4 8.c3 Qxd5 9.Qh6 Rfe8 10.Qxg7+
(78.846.832) 313.8
12.02 4:23 +4.82++ 6.Bd5 Bf5 7.Rg1 Bxe4 8.c3 Qxd5 9.Qh6 dxe3 10.Qxg7+
(82.990.159) 314.9
12.02 9:24 +10.13 6.Bd5 Qxd5 7.exd5 Bf5 8.Qxf5 g6 9.Qh3 d3 10.Qh6 d2+
(180.031.831) 318.7
13.01 13:31 +10.38++ 6.Bd5 Qxd5 7.exd5 Bf5 8.Qxf5 g6 9.Qh3 d3 10.Qh6 d2+
11.Bxd2 Rfd8 (257.316.295) 317.1
best move: Bb3-d5 time: 14:59.488 min n/s: 318.063 nodes: 286.093.401
..QdÐB
kburcham
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