Soberango 0.00.0 realized.

[Luis Babboni]

Soberango 0.06.2 version realized.
Improved time management and adds show thinking.
http://www.luisbtenis.com.ar/Soberango/Soberango.html

Adds iterative deepening is the next step.

[Luis Babboni]

Soberango 0.07.1 version realized.
Now Soberango uses iterative deepening.
Web: http://www.luisbtenis.com.ar/Soberango/Soberango.html

-Level: estimated around ELO 1025 in 40/4 tested against differents engines in the 518 engines CCRL 40/4 rank at July 21th 2016. For example:
28 losses - 19 wins - 3 draws (41%) in a 50 games match against Xadreco 5.7 (nº494 with ELO 1029) **
20 wins - 15 losses - 15 draws (55%) in a 50 games match against Zoe 0.1 (nº 495 with ELO 1021).*
26 wins - 15 losses - 9 draws (61%) in a 50 games match against Safrad 2.1.35.2210 (nº497 with ELO 1018) **
Against Soberango 0.06.2: 33 wins - 12 losses - 5 draws (71%) in a 50 games match . *
*: 0.07.0 version result. **: 0.07.1: result.

Next target: quiescence search.

[Luis Babboni]

Soberango 0.07.2 realized.

Now Soberango could follow an opening dictates by the GUI.
Results against other engines seems to not changed respect version 0.07.1 .

Web: http://www.luisbtenis.com.ar/Soberango/Soberango.html

[Luis Babboni]

Soberango 0.07.4 realized.

Previous versions of Soberango did not uses Alpha Beta prunning as I thought! Just uses "shallow cutoff".*
Now uses "deep cutoff" algorithm that, as far as I understand at least for the moment, produces the same number of cuts in search tree than Alpha Beta.
For the moment the tests gives a little better results than version 0.07.2 with just shallow cutoff.
*: thanks to Matthew R. Brades; Rasmus Althoff; Karlo Bala Jr. ; Sven Schüle and H.G. Muller to help me to see it.

Web: http://www.luisbtenis.com.ar/Soberango/Soberango.html

[Luis Babboni]

Soberango 0.08.1 realized.

Now Soberango have "moves ordering".

I have this implemented since some time ago but just now found a bug that made it play worst than without moves ordering version.
Now plays better than the without version thanks to reach one ply deeper in search in midgame around 50% of the time in 40/4 time control even being its speed lowed down from about 600Kn/s to less than 200 Kn/s.
Next step is to try increase the speed improving the moves ordering algorithm.

Web: http://www.luisbtenis.com.ar/Soberango/Soberango.html

[Luis Babboni]

Soberango 0.08.3 realized.

Improves a little in moves ordering algorithm´s speed (results in between 5% and 10% faster overall engine speed).

No apreciated changes in skill level anyway.

Web: http://www.luisbtenis.com.ar/Soberango/Soberango.html

[Luis Babboni]

Soberango 0.09.0 realized.

Now Soberango have quiescence search.
I think I have things to improve and fix in QS but yet is a little strongest than the version without it.

web: http://www.luisbtenis.com.ar/Soberango/Soberango.html

[Luis Babboni]

Soberango 0.09.2 realized.

Little improvement in level with a change in the criterium to decide when to do quiescence search.

Webpage: http://www.luisbtenis.com.ar/Soberango/Soberango.html

[joechess]

Engine calculates but doesn’t move when starting a game. Anyone else have this problem with Soberango?

[tmokonen]

Engine calculates but doesn’t move when starting a game. Anyone else have this problem with Soberango?

I am experiencing a similar issue, when using a sudden death time control or a time control with an increment. Soberango 0.09.2 seems to work fine if I use a time control of x moves in y number of minutes. I am using Arena as my GUI.