Masyu Slalom Instructions

Rules: The challenge is to draw a loop around the grid, subject to the following rules:

1. White circles must be travelled straight through and must turn in the previous and/or next cell in its path.
2. The loop must turn in black cells and must travel straight through the next and previous cells in its path.
3. The loop mustn't cross or branch off.
4. All gates must be travelled straight through exactly once without any turns.
5. Some gates and circles are numbered and must be passed in sequence, according to the number of the gate.