Herugolf

Herugolf is puzzle game.
The rule is simple.

1. Advance the golf balls to the holes using a series of strokes.
2. The number in a ball indicates the length of the first stroke; any subsequent stroke must be 1 less in length than the preceding stroke.
3. A stroke moves the ball horizontally or vertically; the direction may change at every stop.
4. A stroke cannot stop in a water; a cell can be traversed at most once; i.e. strokes cannot cross or overlay.