A Shingoki Puzzle

Question

This is a Shingoki puzzle.

Rules of Shingoki:

Draw lines between the dots to form a single loop without crossings or branches.
The loop should pass through every circled number in the grid.
For white circles, the loop must pass through in a straight line.
For black circles, the loop must make a 90-degree turn when passing through them.
The numbers in the circles show the sum of lengths of the 2 straight lines going out of that circle.

An example is shown below for greater clarity.
Example Puzzle:

Shown below is the solution with some explanation:

Note how the total length is calculated for the '6' black circle and '5' white circle.

The actual puzzle to solve is shown below:

For your convenience, you may use this link, where a version of the puzzle has already been created using the penpa editor. Select "Mode" to be 'Edge' to draw the lines.
Good luck and have fun!

Stiv · Accepted Answer

The solution is:

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Rom · Answer

The best way to solve it would be to start with the circles on the edges.
If a white circle is on an edge you must have that the line passing through it
is parallel to the edge.
If a black circle is on an edge you know that a line must go into it perpendicular to edge.
Following this and a bit of deduction you arrive at solution.

A Shingoki Puzzle

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