highlight_from = data['position']['last_move_uci'].substr(0, 2);
highlight_to = data['position']['last_move_uci'].substr(2, 4);
} else {
highlight_from = data['position']['last_move_uci'].substr(0, 2);
highlight_to = data['position']['last_move_uci'].substr(2, 4);
} else {