UNICODE top-level constant
A map of Unicode symbols for chess pieces, in both white and black.
Implementation
const Map<String, List<String>> UNICODE = {
"K": ['♔', '♚'],
"Q": ['♕', '♛'],
"R": ['♖', '♜'],
"B": ['♗', '♝'],
"N": ['♘', '♞'],
};