Default Promotion to Queen in Chess Activity

[SnehalSrivastava27]

There was default promotion to queen in chess activity that means child was not asked to which piece he/she wants to promote to which is a wrong game practice and will develop a intuition that they have to promote to queen always which is wrong practice

This may lead to :

1. Stalemate (draw) in chess , even when they are winning
2. Doing a wrong practice

Solution to this:
Add a dialog box which displays 4 pieces in which he/she wants to promote and when they click it sends the promoted piece to backend which will render the promoted piece instead of promoted pawn or default queen

[llaske]

Ok. Why not.
Please do not send a PR before the issue has been approved. See https://github.com/llaske/sugarizer/blob/dev/CONTRIBUTING.md

[llaske]

Fixed in #1705