UltimateTicTacToe       Play some Ultimate Tic-Tac-Toe?
detect_seq              Detects if a certain sequence is present in a
                        matrix.
get_cols                Get all column vectors of a matrix.
get_diags               Get all diagonals vectors of a matrix.
get_rows                Get all row vectors of a matrix.
get_surround            Get surrounding elements of an element in a
                        matrix.
index2xy                Converts a matrix index into a sex of x,y
                        coordinates.
is_palindrome           Palindrome checker.
xy2index                Converts a set of x,y coordinates into a matrix
                        index.
