This is a Corral puzzle. While I’m at it I must say that I used to be utterly clueless at solving this puzzle type until I read this wonderful post by motris, since then its been a type I’m most confident at solving. In effect the part that helped me most was to shade in the parts in the loop instead of just drawing a loop. There’s an escape logic that arises and some other quick deductions which really assists the solve. Very much worth a read.