They actually do make a screwdriver for these screws . It resembles a nut driver with a slotted screwdriver in the middle . You have to press hard on the screw when you remove it [this keeps the blade in the screw slot] I have always been able to remove these with a well fitting straight screwdriver by pressing firmly , and keeping the blade centered in the screw head while turning slowly , be careful not to slip and stab yourself . These are called "Tamper Proof Screws" . Good luck , Mike...
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