Fizbo 1.7 is released

[ymatioun]

I understand, and will implement as much of this as i can for the next version.

Thanks for suggestions.

Youri.

[Graham Banks]

Fizbo version 1.7 has just been released and can be downloaded from https://sites.google.com/site/fizbochessengine/.

.....Estimated increase in playing strength is >50 ELO.

Youri.

From what I've seen so far, +50 Elo seems conservative.

[ymatioun]

I hope it is more. But in the past i overstated strength improvements several times, so i wanted to avoid it now.
I did my testing at shorter time controls (40/4, running 8 games at a time on 4 cores with hyper-threading), and it showed around +100 ELO vs Fizbo 1.6. But i was not sure this would hold up at longer time controls.

Youri.

[Werner]

I hope this picture helps to see why Fizbo crashes in Shredder GUI in ponder=on matches:


maybe it is because of this illegal pv move?

[ymatioun]

I'll remove illegal PV move and upload updated executables within 1 hour. Hopefully this will fix this problem.

Youri.

[ymatioun]

Updated executables are uploaded to https://sites.google.com/site/fizbochessengine/

Now all moves reported by engine should be legal.

Also, as suggested by Ingo Bauer, i added nps to the output, and make PV longer (up to 8 moves).

Everything else is unchanged.

Youri.

[IWB]

Updated executables are uploaded to https://sites.google.com/site/fizbochessengine/

I played 500 games Ponder ON, 5min/game + 3s/move now with this latest version. Besides the occasional "doesn't ponder bug" I have 8 losses on time (and one complete crash for unknown reasons).
That is not a huge number but with an increment of 3s per move that should not happen at all.

Nothing big, but I leave games which are lost on time in as it is a "feature" of the engine!

Besides that it seems to work fine, thx

Ingo

[IWB]

Besides that it seems to work fine, thx

Unfortunately that is not true. The engine is crashing in mate positions with maximum eval, at least in the Classic GUI:





This problem together with the time losses I decided to stop testing here, which is a pitty as it might be a new No. 11 in my list ...


I think the engine needs some more 'polishing'

Ingo

[ymatioun]

Sorry about this: i think these problems are caused by illegal moves on PV. This did not come up before, when PV was short.

I just changed the executables to fix this situation; i hope the fix works. And i will continue cleaning this up for next release.

Youri.

[Graham Banks]

Fizbo 1.7 is spectacularly aggressive!