void Undo() { if (!chessBoardManager.Undo()) { MessageBox.Show("Không thể undo!"); } }
void Undo() { ChessBoard.Undo(); tmCoolDown.Start(); pcbCircular.Value = 0; }
void Undo() { if (!chessBoardManager.Undo()) { MessageBox.Show("Không thể undo!"); } }
void Undo() { ChessBoard.Undo(); tmCoolDown.Start(); pcbCircular.Value = 0; }