There is no way to have a history of the moves

[skydread1]

Problem

Some moves depends on the history of the game such as

• the castling requires the king and the switching rock to not have moved the entire game.
• the en passant requires the move to be done right after the opponent pawn open up a 2 steps move.

Suggestion

Use an embedded DB such as M2 to keep track of all the moves in a game.