And for the curious wondering, "14 layers?!", here's the original photo...
and the process with layer names...
Layer 1 (background) - Background
Layer 2 (new background) - Replicate backround (non-destructive edit), adjust light and use Smart Fill to remove the numbers.
Layer 3 (pure Bishop) - Use the Quick Selection tool to select the Bishop into its own layer
Layer 4 (movement) - Replicate Layer 3 and apply Motion Blur at an angle approximating its move on a diagonal. Reposition so that the movement ends at the bishop.
Layers 5-8 (more movement) - Replicate Layer 4 to intensify the blur (original was
very faint). These are eventually combined into a single layer with Layer 4. After Layer 9 is created and the movement layers combined I used the Perspective Correction tool on this layer only to shrink the left side of the blur to match the resized Bishop. I then applied some contrast and brightness adjustments to the movement, and then a bit of Field Blur to soften the lines.
Layer 9 (original Bishop) - Replicate Layer 3. Move to starting square and use Transform to shrink the Bishop to look as if it was moved. Apply field blur to approximate Depth of Field. Layer opacity reduced to around 25%.
Layer 10 (Bishop overlay) - Replicated Layer 3 and reduce opacity to about 11% to enhance the lines of the piece obscured by the blur.
Layer 11-12 (moving Bishop) - Replicate Layer 10 twice and reposition along the path to show moments during movement. I ultimately did not use these.
Layer 13 (flatten composite) - Using
Command-Option-Shift E I created a new layer of all the visible portions, which preserved the edits but allows me to apply global changes like vignettes, sharpening, etc.
Layer 14 - Replicate Layer 13, apply High Pass Filter, set the layer blend to Vivid Light, and reduce opacity to sharpen.
And there you have it.

As it exists now, there are are only 4 visible layers preserved as edits (the new background, the movement, the original bishop and the bishop overlay), and 2 visible layers hiding that (the flattened composite and the high pass filter). Once complete, I did some minor tonal tweaking in LR before exporting.