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Subject: Re: Smirin outplayed Chess Tiger 14 not Gambit Tiger

Author: Enrique Irazoqui

Date: 15:03:17 04/28/02

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On April 28, 2002 at 17:36:41, Keith Ian Price wrote:

>As I was following the game with Chess Tiger on identical hardware to what was
>being used by the program, I noticed that CT 14 agreed with every move played by
>Black. After the game I tried to make GT 2.0 play Kf8, but it never comes up,
>not even close.

I tried with my AMD 1800+ and 192 MB hash:

Ilya Smirin - Gambit Tiger
2r3k1/1p1qb1pp/1p2bp2/rP2p3/P2pP2P/3P1NP1/3Q1PB1/R1R3K1 b - - 0 1

Analysis by Gambit Tiger 2.0:

1. -+ (-1.70): 22...Kf8 23.Rxc8+ Qxc8 24.h5 Bb3 25.h6 g6 26.Qc1 Qxc1+ 27.Rxc1
Ra8 28.Nd2 Bxa4 29.Ra1 Kf7 30.Nc4 Bc5
2. -+ (-1.66): 22...Raa8 23.Rxc8+
3. -+ (-1.66): 22...Rca8 23.Qc2 Bb4 24.Bh3 Bxh3 25.Qc4+ Qf7 26.Qxb4 Qh5 27.Nd2
Qe2 28.Nc4 R5a7 29.Nxb6 Rd8
4. -+ (-1.66): 22...Re8 23.Qb2 Rea8 24.Qc2 Bb4
5. -+ (-1.62): 22...Bd6 23.Qd1
6. -+ (-1.60): 22...Kh8 23.Rxc8+ Qxc8 24.h5 Bb3 25.h6 g6 26.Qc1 Qc5 27.Nd2 Bxa4
28.Qxc5 Bxc5 29.Nc4 Ra7
7. -+ (-1.58): 22...Bf8 23.Qd1
8. -+ (-1.56): 22...Rxc1+ 23.Qxc1
9. -+ (-1.56): 22...Qe8 23.Rxc8 Qxc8 24.Qd1 Qf8 25.Nd2 Bb4 26.f4 Bc3 27.Rc1 Bxd2
28.Qxd2 Rxa4 29.fxe5 fxe5
10. -+ (-1.56): 22...Qd8 23.Rxc8 Qxc8 24.Qd1
11. -+ (-1.54): 22...Bf7 23.Rxc8+ Qxc8 24.Qd1 Bb4 25.Rc1 Qa8 26.Bh3 Bc3 27.Nd2
Rxa4 28.Nb1 Qa5 29.Nxc3 dxc3 30.Rxc3 Qxc3 31.Qxa4
12. -+ (-1.52): 22...Ra7 23.Qd1
13. -+ (-1.52): 22...Rc7 23.Qd1 Rc5 24.Rxc5 bxc5 25.Nd2 b6 26.Rc1 Qa7 27.Nc4
Rxa4 28.Nxb6 Rb4 29.Nc4 Rxb5
14. -+ (-1.50): 22...Kf7 23.Qd1 Bb4 24.Rxc8 Qxc8 25.Nh2 Bc3 26.Rc1 Qb8 27.Kf1
Kf8 28.Kg1 Qc7 29.Bf3

(Irazoqui, Cadaqués 28.04.2002)


> Also GT switches from Bxa1 to g4 in under a minute,

Bxa1 is being picked and dropped more than once, and it takes over 3 minutes to
discard it apparently for good:

[D]r4k2/1p2q2p/1Q2bp1P/rP2p1p1/P2pP3/2bP2P1/3N1PBK/R1R5 b - - 0 1

Analysis by Gambit Tiger 2.0:

1...Bxa1 2.Rxa1 Rxa4 3.Rc1 Rc8 4.Rxc8+ Bxc8 5.Nc4 Be6 6.Nd6 Ra2
  -+  (-3.38)   Depth: 9   00:00:00  188kN
1...Bxa1 2.Rxa1 Rxa4 3.Rc1 Rc8 4.Rxc8+ Bxc8 5.Nb3 Ra2 6.Qc5 Qxc5 7.Nxc5 Rxf2
  -+  (-3.16)   Depth: 10   00:00:00  239kN
1...Bxa1 2.Rc7 Qd8 3.Nc4 Rxa4 4.Rxh7 Qxb6 5.Nxb6 R8a7 6.Nxa4 Rxa4 7.Rxb7
  -+  (-2.90)   Depth: 11   00:00:01  755kN
1...Bxa1 2.Rc7 Qd8 3.Nc4 Rxa4 4.Rxh7 Qxb6 5.Nxb6 Kg8 6.Re7 Bb3 7.Nxa8 Rxa8 8.h7+
Kh8 9.Rxb7
  -+  (-2.36)   Depth: 12   00:00:04  1779kN
1...g4 2.Rxc3 dxc3 3.Nb1 c2 4.Nc3 Bb3 5.Rc1 Kg8 6.Nd5 Bxd5 7.exd5 Rxa4 8.Rxc2
Ra3
  -+  (-2.40)   Depth: 12   00:00:12  5207kN
1...Kg8 2.Rxc3 dxc3 3.Nb1 c2 4.Nc3 Bb3 5.Bf3 R8a7 6.Bg4 Kf7 7.Rc1 Kf8
  -+  (-2.44)   Depth: 12   00:00:19  8401kN
1...Kg8 2.Rxc3
  -+  (-2.44)   Depth: 13   00:00:22  9642kN
1...g4 2.Rxc3 dxc3 3.Nb1 Rxa4 4.Rxa4 Rxa4 5.Nxc3 Ra3 6.Nd5 Bxd5 7.exd5 Rxd3
8.Be4 Ra3
  -+  (-2.34)   Depth: 14   00:01:44  45041kN
1...Bxa1 2.Rc7 Qd8 3.Nc4
  -+  (-2.36)   Depth: 14   00:01:50  47503kN
1...g4 2.Rxc3 dxc3 3.Nb1 c2 4.Nc3 Bb3 5.Rc1 Qf7 6.Nd5 Qh5+ 7.Kg1 Qxh6 8.Qd6+ Kg7
9.Qe7+ Kh8 10.Qxf6+
  -+  (-2.18)   Depth: 15   00:03:12  82130kN
1...g4 2.Rc2 R5a7 3.Rxc3 dxc3 4.Nb1 Rxa4 5.Rxa4 Rxa4 6.Nxc3 Ra3 7.Nd5 Bxd5
8.exd5 Rxd3 9.Be4 Rc3
  -+  (-2.24)   Depth: 16   00:06:26  166192kN
1...g4 2.Rc2 R5a7 3.Rxc3 dxc3 4.Nb1 c2 5.Nc3 Bb3 6.Rc1 Qf7 7.Nd5 Qh5+ 8.Kg1 Qxh6
9.Qd6+ Kg7 10.Qe7+ Kh8
  -+  (-2.18)   Depth: 17   00:09:29  248266kN

(Irazoqui, Cadaqués 28.04.2002)

Enrique


> while CT 14
>does not. I believe they were playing Chess Tiger 14. Any thoughts, Christophe?
>
>kp



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