Function grid_size

recipes/Python/578062_Markov/recipe-578062.py:403–405

(string, word_size, plain_chars)

    return cyphertext.decode(CODEC, 'ignore'), sudoku_key, boot_strap

def grid_size(string, word_size, plain_chars):
    encode_on = set(string.encode()).difference(set(plain_chars.encode()))
    return len(encode_on) ** word_size

################################################################################