Glaurung 2 epsilon/4 vs Toga II 1.3x4

[revengeska]

I'm on Fedora 7 64 bit Linux and today just compiled both engines on here to play against each other on xboard. This game was quite a fun one to watch. It should give Tord some ideas on how to improve his engine.

I used 256 hash tables for each and no book. Enjoy!

Glaurung 2 epsilon/4 64 bit - Toga II 1.3x4 64 bit

1.e4 e5 2.Nf3 2.Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6 9.Ne4 Nd5 10.Be2 Be7 11.Qg3 0-0 12.d3 Bh4 13.Qxe5 f5 14.Nec3 Re8 15.Qd4 Bf6 16.Qa4 Bd7 17.Kd1 c5 18.Qa3 Bc6 19.Qxc5 Rc8 20.Re1 Re5 21.Nxd5 Bxd5 22.Qb4 Bxg2 23.Qf4 Nc4 24.Nc3 Bg5 25.Qg3 Qd4 26.Qxg2 Bxf8 27.Rg8 Rc7 28.Rc1 Nxb2+ 29.Ke1 Qxc3+ 30.Kf1 Qd2 31.Qa8+ Kh7 32.Re1 Rce7 33.Qf3 Qxc2 34.Rg3 g6 35.d4 Rxe2 36.Rxe2 Qd1+ 37.Rg2 Qxe2 38.Qxe2 Rxe2 39.Ra3 g5 40.h4 Rd2 41.hxg5 hxg5 42.Kg1 g4 43.Rxa7 Kg6 44.a4 Nd3 45.Ra8 Nxf2 46.Kf1 Ne4 47.Ke1 Rxd4 48.Rc8 Rxa4 49.Ke2 0-1

[revengeska]

Sorry, the notation had a few errors(I wrote it by hand, as xboard wasn't letting me save), so here's the correct notation(you can copy/paste into a GUI just fine):

[Date "2007.06.09"]
[White "Glaurung 2 epsilon/4 64 bit"]
[Black "Toga 1.3x4 64 bit"]
[Result "0-1"]
[PlyCount "97"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6 9.Ne4
Nd5 10.Be2 Be7 11.Qg3 O-O 12.d3 Bh4 13.Qxe5 f5 14.Nec3 Re8 15.Qd4 Bf6 16.Qa4 Bd7
17.Kd1 c5 18.Qa3 Bc6 19.Qxc5 Rc8 20.Re1 Re5 21.Nxd5 Bxd5 22.Qb4 Bxg2 23.Qf4 Nc4
24.Nc3 Bg5 25.Qg3 Qd4 26.Qxg2 Bxc1 27.Rg1 Rc7 28.Rxc1 Nxb2+ 29.Ke1 Qxc3+ 30.Kf1
Qd2 31.Qa8+ Kh7 32.Re1 Rce7 33.Qf3 Qxc2 34.Rg3 g6 35.d4 Rxe2 36.Rxe2 Qd1+ 37.Kg2
Qxe2 38.Qxe2 Rxe2 39.Ra3 g5 40.h4 Rd2 41.hxg5 hxg5 42.Kg1 g4 43.Rxa7+ Kg6 44.a4
Nd3 45.Ra8 Nxf2 46.Kf1 Ne4 47.Ke1 Rxd4 48.Rc8 Rxa4 49.Ke2 0-1

[Werner]

Hi,
I have played now 30 games for CEGT 40/20 with

Glaurung 2 epsilon/4 2CPU - Toga1.2.1a = 16 -14 (interim result).

All games tomorrow when CEGT is updated!

[revengeska]

Hi.

I have to ask. Why do you not run the latest version of Toga? To me it's clear that Toga II 1.3x4 is much stronger than it's older counterpart, with the tests I've done. I'm a bit uninterested about results of an old version of Toga vs a new engine.

[Graham Banks]

Hi.

I have to ask. Why do you not run the latest version of Toga? To me it's clear that Toga II 1.3x4 is much stronger than it's older counterpart, with the tests I've done. I'm a bit uninterested about results of an old version of Toga vs a new engine.

Toga II 1.3x4 has an egbb access bug.

[Uri Blass]

Hi.

I have to ask. Why do you not run the latest version of Toga? To me it's clear that Toga II 1.3x4 is much stronger than it's older counterpart, with the tests I've done. I'm a bit uninterested about results of an old version of Toga vs a new engine.

I think that it is not clear that 1.3x4 is stronger

The CEGT 40/20 list has very small difference:

http://www.husvankempen.de/nunn/40_40%2 ... liste.html

54 Toga II 1.3x4 egbb 2802 25 26 394 42.4 % 2855 45.2 %
56 Toga II 1.2.1a 2799 8 8 4940 53.8 % 2773 35.4 %
60 Toga II 1.3x4 2790 30 30 305 45.1 % 2824 39.7 %


The CEGT 40/4 list has 1.3x4 as only slightly stronger

http://www.husvankempen.de/nunn/40_4_Ra ... liste.html

36 Toga II 1.3x4 2811 25 25 450 38.7 % 2892 38.7 %
42 Toga II 1.2.1a 2803 10 10 3394 49.5 % 2806 32.0 %

[Werner]

...we will play a lot of games and also against Toga II 1.3x4 - later

[Stephen Ham]

Hi.

I have to ask. Why do you not run the latest version of Toga? To me it's clear that Toga II 1.3x4 is much stronger than it's older counterpart, with the tests I've done. I'm a bit uninterested about results of an old version of Toga vs a new engine.

I think that it is not clear that 1.3x4 is stronger

The CEGT 40/20 list has very small difference:

http://www.husvankempen.de/nunn/40_40%2 ... liste.html

54 Toga II 1.3x4 egbb 2802 25 26 394 42.4 % 2855 45.2 %
56 Toga II 1.2.1a 2799 8 8 4940 53.8 % 2773 35.4 %
60 Toga II 1.3x4 2790 30 30 305 45.1 % 2824 39.7 %


The CEGT 40/4 list has 1.3x4 as only slightly stronger

http://www.husvankempen.de/nunn/40_4_Ra ... liste.html

36 Toga II 1.3x4 2811 25 25 450 38.7 % 2892 38.7 %
42 Toga II 1.2.1a 2803 10 10 3394 49.5 % 2806 32.0 %

Hello Uri,

I agree. I see zero evidence that 1.3x4 is the stronger version. I perform most of my tests at ultra-long time controls which gives me high quality games, but too few to generate statistical comparisons.

However, it's my perception that 1.3x4 is less aggressive than it's predecessor. I subjectively prefer 1.2.1's move selection in the middlegame.

All the best,
Steve