39th Amateur Series Division 7

[Modern Times]

Gábor, one of our blitz testers, got nearly 100 time losses out of about 700 games, so there is clearly a serious problem with Dabbaba 7.49

[Graham Banks]

What happens, Graham?
Dabbaba has lost its last 15 games!

Are you treating him well?
Don't feed him with poor chips!

I had a look at some of the games (round 19-24).
It is not easy to read the score/depth/time; many weird values.
But I can see the moves.

3R4/3Q1pk1/p2p2p1/4p1P1/3nP2P/3qB1K1/8/8 w - - 9 76 ; 76.Rd8g8?? looses - Soldat

Dabbaba 7.49 has an error.
It sometimes misses to evaluate the position when the Q-search starts.
My current version does not make this 76.Rd8g8?? error.
But this error should only be a 40-elo error.


2r3k1/p2q2pp/3p4/Q2P4/1RP1pP2/4P3/P6P/7K w - - 1 29 ; 29.Rb4a4?? looses - Cupcake
8/1B6/P5k1/3p1p2/2qb3p/8/6PK/4Q3 b - - 7 105 ; 105.Qc4c3?? looses immediately - Butcher

I cannot reproduce these terrible errors.
Probably an error in the hash-tables (that has been there for years...)
Perhaps I can start the game a few moves earlier and then reproduce the error?!
That would give me a chance to find and fix it.

Does dabbaba.exe still have its dabbaba.ini file in the same directory?

Does dabbaba produce a big log-file?
Writing to the disc all the time could slow it down.
I have seen such a file a few times lately.

best, jens

I'll send you the debug files for all of the Dabbaba games once the tournament has been completed.
That way, you can investigate.

[JBNielsen]

I'll send you the debug files for all of the Dabbaba games once the tournament has been completed.
That way, you can investigate.

Thanks; then I'll take a look at them.
What a nightmare; 18 lost games in a row.

But anyway; thanks for the tournament.

best, jens

[JBNielsen]

Gábor, one of our blitz testers, got nearly 100 time losses out of about 700 games, so there is clearly a serious problem with Dabbaba 7.49

When I play gauntlets with dabbaba 7.49 (game in 1 minute on a rather old laptop); it only looses ca. 1% by time forfeit.

[Graham Banks]

I'll send you the debug files for all of the Dabbaba games once the tournament has been completed.
That way, you can investigate.

Thanks; then I'll take a look at them.
What a nightmare; 18 lost games in a row.

But anyway; thanks for the tournament.

best, jens

You're welcome.
I'm as disappointed as you are that Dabbaba hasn't done better, so hopefully the debug files might help pinpoint some issues to address.

Graham.

[Graham Banks]

39TH AMATEUR SERIES (Division 7)

Intel i5 Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
Graham2013.cgb book
40 moves in 25 minutes repeating (adapted for the CCRL)
4 cycles 44 rounds
All engines 64-bit where available

The top engine will gain automatic promotion. Any other changes of division will be at my discretion and may not necessarily involve playoff matches.

Standings after Round 36

25.5 - Vajolet 1.62.1
25.5 - Waxman 2011
24.5 - Capivara LK 0.09a01a 64-bit
23.0 - Butcher 1.64 64-bit
21.5 - Gibbon 2.57a 64-bit
21.0 - FireFly 2.6.0 64-bit
18.5 - ProChess 1.02AD
16.0 - ChessKiss 1.7 64-bit
15.5 - Shallow 1.0 64-bit
11.5 - Soldat III 0.172
9.0 - Cupcake 1.1a
4.5 - Dabbaba 7.49


This tournament can be followed more closely from the following link, where games will also be available for download after every two rounds:
http://kirill-kryukov.com/chess/discuss ... f=7&t=6910

Alternatively, if you install TLCV (Tom's Live Chess Viewer) on your computer, you can watch the games live move by move. You'll also be able to chat to others following the tournament in the chatroom there.
http://home.pacific.net.au/~tommyinoz/client.zip
Host - GrahamCCRL.dyndns.org Port - 16001

The tournament is also being broadcast in Playchess.

[Graham Banks]

39TH AMATEUR SERIES (Division 7)

Intel i5 Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
Graham2013.cgb book
40 moves in 25 minutes repeating (adapted for the CCRL)
4 cycles 44 rounds
All engines 64-bit where available

The top engine will gain automatic promotion. Any other changes of division will be at my discretion and may not necessarily involve playoff matches.

Standings after Round 42

30.0 - Waxman 2011
29.5 - Vajolet 1.62.1
27.5 - Butcher 1.64 64-bit
26.0 - Capivara LK 0.09a01a 64-bit
26.0 - Gibbon 2.57a 64-bit
23.5 - FireFly 2.6.0 64-bit
21.5 - ProChess 1.02AD
20.5 - Shallow 1.0 64-bit
19.0 - ChessKiss 1.7 64-bit
12.0 - Soldat III 0.172
10.5 - Cupcake 1.1a
6.0 - Dabbaba 7.49


This tournament can be followed more closely from the following link, where games will also be available for download after every two rounds:
http://kirill-kryukov.com/chess/discuss ... f=7&t=6910

Alternatively, if you install TLCV (Tom's Live Chess Viewer) on your computer, you can watch the games live move by move. You'll also be able to chat to others following the tournament in the chatroom there.
http://home.pacific.net.au/~tommyinoz/client.zip
Host - GrahamCCRL.dyndns.org Port - 16001

The tournament is also being broadcast in Playchess.

[Graham Banks]

39TH AMATEUR SERIES (Division 7)

Intel i5 Quad
ChessGUI
256mb hash each where possible
3-4-5 piece tablebases
Ponder off
Graham2013.cgb book
40 moves in 25 minutes repeating (adapted for the CCRL)
4 cycles 44 rounds
All engines 64-bit where available

The top engine will gain automatic promotion. Any other changes of division will be at my discretion and may not necessarily involve playoff matches.

Final Standings

31.5 - Waxman 2011
30.0 - Vajolet 1.62.1
28.5 - Butcher 1.64 64-bit
27.5 - Capivara LK 0.09a01a 64-bit
27.5 - Gibbon 2.57a 64-bit
23.5 - FireFly 2.6.0 64-bit
23.5 - ProChess 1.02AD
21.0 - Shallow 1.0 64-bit
20.5 - ChessKiss 1.7 64-bit
12.0 - Soldat III 0.172
11.5 - Cupcake 1.1a
7.0 - Dabbaba 7.49

The complete tournament pgn (zipped) can be downloaded here:
http://kirill-kryukov.com/chess/discuss ... p?id=28796

[Edoardo Manino]

more than half the points! I'm very happy with ProChess performance!
Thankyou Graham

[elcabesa]

a very good tournament for Vajolet!

I hope you could play some other Vajolet games so I could release my new vajolet before the next Division 7

thank you graham