Die Unterverwandlung funktioniert auch in Lucas Chess einwandfrei, wie in Kapitel 6.4.3 der eOne-Anleitung beschrieben ist.

Das mag sein. Es gab schon einmal ein Problem unter Arena bei der Unterverwandlung mit dem ST55, das damit behoben werden konnte, dass im Konfigurationsfenster des "DGT"-Treibers die deutsche Notation mit der englischen ersetzt wurde. Bei Shredder funktioniert die Unterwandlung mit dem ST55 einwandfrei, mit dem eOne leider überhaupt nicht.

For a board with ChessLink built in to behave just like the other boards, it's driving me mad!!

Having said that I can't reproduce the problem with whose side to move it is when the board is rotated. I set up a rotated position with black to move and made some moves, then reset it (still rotated) with white, then reset it un-rotated with black to move then with white to move. I suspect the problem is that Shredder only send the piece positions to my driver, while LucasChess sends a full FEN. So on my screen when asked for a position you need to make sure the side to move indicator is set correctly, while for LucasChess it will automatically be set. The side to move is set on my screen using the button with a two-headed arrow.

I can't reproduce the underpromotion problem either. When you lift up the pawn to move, the three LEDs flash and you select which piece to underpromote to. If you press one it underpromotes OK and if you don't you get a queen. It seems to be working for me in Shredder. If the problem is in Arena let me know and I'll test that too but of course that takes longer as I can't set up positions there!

PS. I have added the German letters to the allowed promotion pieces to fix the problem with Arena! I couldn't do the "English-Russian" letters as my English windows wouldn't show me what they are. Right now, to be honest, I couldn't care less about supporting Russian characters.

As a test I found this position online and played it with both white and black:


Qxa7, Kxa7, bxc8=N

With the engine playing white when the pawn takes the rook the board will flash to show that the promotion is a knight, but note that you must still press the knight button on the board for the under promotion to work. So you lift the rook, lift the pawn, press the knight button and then place the knight on the board.

I realised one issue people might be running into when setting up test positions is that the GUIs send new positions to my driver and my driver tries to work out what move was made. That's how a normal game would progress. But if you are setting up new positions and the new one is almost identical to the old one, but with one piece moved for example, my driver might think that you have actually made a move rather than starting a new game again. Sometimes you need to make a few moves before restarting the position or edit it twice, adding and removing an extra pawn or something in between.

Hi Graham, the promotion works. It was my fault. It's the same old problem... men don't read manuals. Sorry for that and thanks for your kindly help.
Everything works! Best wishes. EST