A straight three-cell run
Trace JOY from row 7, column 5, then move left to row 7, column 4. Continue left once more to row 7, column 3. The letters read J → O → Y in order, creating one straight three-cell segment with no turn and no corner visit.
For an exact check, follow 1 at row 7, column 5; 2 at row 7, column 4; 3 at row 7, column 3. All three positions lie on the board edge, and the starting and ending cells each have two open orthogonal neighbors.