Here is the complete solution for all 15 levels of Turn Maze. Hopefully, all 15 solutions are correct. If they are not, just post a comment below, and I will work on it with you.
Level 1: left, right, right, left, left.
Level 2: left, left, right, right, right, right.
Level 3: right, left, left, right, right, right, right, right, right.
Level 4: right, right, left, left, left, left, right, left.
Level 5: left, right, right, left, right, right, right.
Level 6: Turn right 6 times.
Level 7: Turn right. Then turn left 5 times.
Level 8: left, right, right, right, right, left, left, left.
Level 9: Turn left 6 times. Then turn right.
Level 10: left, right, right, right, left, left, right, left, left.
Level 11: left, right, left, right, right, right, right, left.
Level 12: right, right, right, left, left, left.
Level 13: left, left, left, left, left, left, left, right, left, left, right.
Level 14: left, right, right, right, right, right, left, right.
Level 15: right, right, right, left, right, left, right, left.