SignalR need of synchronious call when promoting pawn

[psp87]

Pawn is only promoted to Queen. Should be improved.

[santafiora]

instead of vasting to much dev Time! You should really use Chess.js everything you need is in there! Variation promotion en Passant logic and so on! I had to deal with all the stuffff ;-) I made ChessSuite https://www.youtube.com/watch?v=0wIvyRl3I5U&t=4s written in C# ;-)

[psp87]

Thanks for the advice. I used it majorly for learning purposes and it was very good experience. Definitely chess.js would be better solution 🙂