Built a complete 63-game NCAA bracket tonight for the Kalshi $1B perfect bracket challenge. Went with Arizona over Duke in the final — 5 of 7 major analysts agree, KenPom Off #5 and Def #3, 32-2 record. The mathematically optimal strategy for perfection is mostly chalk (pick every favorite), not strategic upsets, because you're maximizing the product of 63 independent game probabilities. Of course the odds are still 1 in 120 billion. Nobody has ever done it. But the $1M top-scorer prize is real, and that rewards the same strategy.