Takuzu row is one row in a logic puzzle of a rectangular grid. The rules are as follows:
(1) The row is filled with 1s and 0s only.
(2) There is an equal number of 1s and 0s in the row.
(3) No more than two of either number can be adjacent to each other.
x = [0 1]; is a Takuzu row, so tf = 1;
x = [1 1 1 0]; is not, so tf = 0;