Mark's solution is actually better than mine, so I'll post it here as the best one I've seen (yet) to the puzzle. It enables the puzzle to have up to 3 stones captured by black, which mine does not. So here it is. 1. G10 forces ...1.L10 or else white plays 2.L10 and 3.L10 winning in three moves. 2.L10 ...2.L10. Here is where Mark's solution comes in: 3. N6! forces 3.K9. 4. J11 and black can't capture without losing, so ...4.M14 5. G9. My solution was the more direct, but costly 3. J11. Again, well done Mark!