On-line engine blitz tourney August

[hgm]

Question: What do the +/-s in front of the names indicate? They don't seem to correlate with the performance vs rating.

I think it is whether the player is still connected to the ICS. Some participants logged out immediately after the tourney was finished, before I printed the result table.

[Joost Buijs]

WaDuuttie achieved an acceptable score this time because in the last round in this position
[d]8/5p2/p4Pk1/6P1/1p2K2P/1P6/3p4/2bN4 b - - 0 56
ArasanX played Ba3 and to my surpise resigned ! WaDuuttie thinks he is only slightly better and certainly not winning yet ... so what did ArasanX see ?

Black is in zugzwang and at fist glance it looks like this position is completely lost for black. Maybe Arasan already saw this?
Nightmare thinks the position is +1.5 for White and doesn't see a win either, my guess is that it has something to do with null-move.

[Modern Times]

WaDuuttie thinks he is only slightly better and certainly not winning yet ... so what did ArasanX see ?

Komodo sees +5

44.01 6:54 +5.02 1...a5 2.Ke3 Kf5 3.Ke2 Ke5 4.Kd3 Kf5
5.Kc4 Ke5 6.Kb5 a4 7.Kxa4 Ba3 8.Kb5 Ke6
9.Kc5 Kf5 10.Kd4 Kg6 11.Ke4 Kh7
12.Kd5 Bc1 13.Kc4 Ba3 14.Kb5 Kg6 (6.296.667.713) 15186
TB:29.928.866

[Modern Times]

Ah there you go

45.01 15:00 +250.00 1...a5 2.Kd3 Kh5 3.Kc4 Ba3 4.Kb5 a4
5.Kxa4 Kg6 6.Kb5 Bc1 7.Kc4 Kf5 8.Kc5 Ba3
9.Kb5 Bc1 10.Kxb4 Ke5 11.Kc4 Ba3
12.b4 Ke4 13.g6 fxg6 14.f7 Kf5 (13.705.111.000) 15223
TB:74.071.244

[Joost Buijs]

Yes, Komodo is very smart, like a human.

Every good chess player sees immediately that Black is dead lost, many engines just don't find it because there is zugzwang (null-move).

[Maarten Claessens]

It seems (even) Komodo needs considerable depth to to see this. Pretty impressive if ArasanX finds it in a 5'+1" blitz game!

[Modern Times]

It seems (even) Komodo needs considerable depth to to see this. Pretty impressive if ArasanX finds it in a 5'+1" blitz game!

Yes, that exact thought occurred to me as well. AransanX was running on 20 or more cores I think, but lots of cores is useless if you don't have the intelligence as well.

It takes Stockfish three and a half mins to get +5.5 on my machine, and five and a half minutes to get to +10

[Modern Times]

Every good chess player sees immediately that Black is dead lost,

That rules me out then !!

[Daniel Anulliero]

Congrats everyone! At least got to watch some games, and found it to be a fun little tourney with a good mix of engines.

Question: What do the +/-s in front of the names indicate? They don't seem to correlate with the performance vs rating.

Yes very funny indeed even with so bad result ( my engine Isa 2.5/9 )
Well I was happy to drew Joker this time
See you next month!

[Maarten Claessens]

From my winboard.debug file (just before Arasan resigns):

Code: Select all

ArasanX(2041)(C) kibitzes: time=20.35 sec. score=-7.33 depth=34 nps=6.08M egtb=55443/55625 cpu=548.11%