# glyphs for pretty chess piece output
chess_glyphs = {
	'WK': '♔ ', 'WQ': '♕ ', 'WR': '♖ ', 'WB': '♗ ', 'WN': '♘ ', 'WP': '♙ ',
	'BK': '♚ ', 'BQ': '♛ ', 'BR': '♜ ', 'BB': '♝ ', 'BN': '♞ ', 'BP': '♟ ',
	'  ': '  '
}

# conversion between chess notation and col index
col_conv = {'a':0, 'b':1, 'c':2, 'd':3, 'e':4, 'f':5, 'g':6, 'h':7}

EMPTY_SQUARE = '  '