Strange beaviour of WyldChess under WinBoard

[SzG]

It crashes with an illegal move when installed as a WB engine.

It can move if I specify the xboard command line but then does not use the polyglot book.

When installed as a UCI engine there is no problem.

Also, when installed under Arena as a WB engine, there is no problem either.

[mkchan]

I think it was because WyldChess(WB mode) replies to any unrecognized command with "Illegal move: <unrecognized input>"
I changed it to "ERROR (unsupported): <unrecognized input>" to comply with http://www.open-aurec.com/wbforum/WinBo ... ntf.html#9 . Tested the changes, it seems to work in xboard now.

Still not making a distinction between an illegal move and an unrecognized command, it should be fine according to the site

Will upload WyldChess 1.1 with the change and some elo gain soon

[hgm]

Still not making a distinction between an illegal move and an unrecognized command, it should be fine according to the site

Will upload WyldChess 1.1 with the change and some elo gain soon

Actually that is not fine for users that would play with legality testing off. (You might of course argue they should not do that.) An "Illegal move" command would make the GUI take the move that the engine refused back, in human-engine mode, so the GUI and engine stay in phase; "Error" would not do that.

Recommended is to use the usermove feature; then you will always know what are moves and what not. Even without it it is not so difficult, though: if the second character is a digit (or an @ sign if you also do piece drops), it is a move, otherwise a command keyword.

[mkchan]

Thanks for confirming that! I'll probably shift to the usermove feature then