Basics

[Henk]

This position gave a stalemate so I was already busy debugging stalemate detection. But looks like it is only a user interface bug for SkipperWinb prints f2f1 even if it is a minor promotion.

[d] 8/2p3k1/2P3r1/8/8/8/5p1K/8 b - - 0 75

[Daniel Anulliero]

This position gave a stalemate so I was already busy debugging stalemate detection. But looks like it is only a user interface bug for SkipperWinb prints f2f1 even if it is a minor promotion.

[d] 8/2p3k1/2P3r1/8/8/8/5p1K/8 b - - 0 75

Debug your under promotion scheme too
f2f1=R Kh2h3
Rf1h1#

PS: I think the engine must send the type of pièce promoted to the GUI :
f2f1q , f2f1r etc...
Otherwise , the GUI think it's a queen promotion by default ...
I had this kind of bug with Isa :
http://www.talkchess.com/forum/viewtopi ... ht=#645613

[Henk]

There are more basic problems. Fifty moves rule. Simple endgames like KRK. They don't give it more ELO. So I miss motivation to fix them or I'm just too lazy.

Also Skipper's user interface doesn't allow a human user to do under promotion for it has to create a new window with a menu.

Are there bad playing chess programs that have none of these basic errors ?

I think fairy-max does not support under promotion.

[Daniel Anulliero]

There are more basic problems. Fifty moves rule. Simple endgames like KRK. They don't give it more ELO. So I miss motivation to fix them or I'm just too lazy.

Also Skipper's user interface doesn't allow a human user to do under promotion for it has to create a new window with a menu.

Are there bad playing chess programs that have none of these basic errors ?

I think fairy-max does not support under promotion.

Welllll. .. if you want a not too weak engine , you must fix all the small problem
If you KRK don't work well you miss 1/2 points ...so you lose some elo
But if you are too lazy , better writing à tic tac toe program , more easy than chess

[Henk]

Actually I think KRKN end game occurs more frequently than KRK or otherwise KRKNP. See Skipper often playing that endgame and always losing.

[Stan Arts]

[Daniel Anulliero]

???

[Daniel Anulliero]

Actually I think KRKN end game occurs more frequently than KRK or otherwise KRKNP. See Skipper often playing that endgame and always losing.

Welllll. ... KRKN is usualy à draw ...
I have a scoop for you ... you have bugs somewhere
Need to fix them...
Where can I see skipper playing ? Any download?
Personnaly I'll plan to release Isa soon , sometimes , the Testers or the "magicians of compiler" can help to fix tons of things .
You should release Skipper too

[Henk]

Yes but also need two fingerprints, about 64 euro and have to wait a week before getting new passport.

[mar]

I think fairy-max does not support under promotion.

But it can detect stalemates, in the position you posted it's irrelevant if the engine supports underpromotion or not, there's a plenty of other options to win.
You can't really blame the interface here - not sending promotion piece is engine's fault.

What should it do if you don't send the suffix?
- test if it's a stalemate and underpromote?
- do a search for you and choose the best move?

c'mon, this is problem is trivial to fix...