Specific Removing image background

[Nizarzoughibi]

Hello friends. Could someone help me with removing the background of this image
I only want the horse without the seat or shadow
Thanks in advance

 

[JeffK]

Here's a try - had to draw in the figures calves since they were hidden by the board - also added a thin stroke around the figure since I wasn't able to capture all of the original.
Saved as a png with a transparent background:

 

[GeneGraphics]

Here.

 

[JeffK]

After seeing Gene's, went in for a 2nd try for cleaner lines:

 

[Nizarzoughibi]

Thank you all.