If you try to loose the fat by calorie or carbohydrate restriction you will almost certainly loose strength and muscle mass. The only other alternative is some sort of testosterone or HGH increasing regemin. Options include:
1. anabolic steriods (illegal and dangerous)
2. andro (works for some, not for others, may have dangerous side effects)
3.
HIIT/Short high intensity burst exercise
I just read some recent studies on sprint training and I think the results can be extrapolated to short high intensity weight training. I'm experimenting with a routine myself. So far I'm a week and a half into it and I have lost 2-3 pounds while increasing my strength on almost every exercise, and I can see a distinct increase in definition, especially on my abs where most of my last 10 pounds of body fat lies.