Sharon Osberg is a two-time world bridge champion. Her partners include high-powered executives Warren Buffett and Bill Gates. She describes the playing styles of the two men as aggressive. Gates approaches bridge scientifically, reasoning through problems. Buffett is more intuitive and computes probabilities on the fly. Osberg says, "Neither of these guys likes to lose. Warren and I were playing against his sister and brother-in-law…and we were losing. Warren's sister wanted to frame the score sheet. So Warren ate it."