Place 1-6 in each row, column and 3x2 box. Each of the following constraint types may contain no repeated digits anywhere in the puzzle. E.g., if a purple line contains a 5, then no other purple line in the puzzle may contain a 5: 1) Digits on a purple line must be consecutive. 2) Any set of three digits along a turquoise line must have at least one digit from each of the following sets: (1, 4), (2, 5), (3, 6). 3) Digits in cells separated by a V must sum to 5. 4) One digit is double the other in cells separated by a black dot. 5) A blue square must contain an even digit.