IBM supercomputer Watson has defeated two of Jeopardy's greatest players, and it wasn't even close.

In the second day of Jeopardy's three-day "Man vs. Machine" special, Watson wiped the floor with Ken Jennings (a 74-time champion) and Brad Rutter (a 20-time champion). Ken Jennings ended day two with $4,800 and Brad Rutter ended with $10,400, while Watson took home $35,734 in prize winnings. Out of 30 answers, Watson was first to buzz in on 25 of them, getting all but one of them right.

Very little stumped IBM's artificial intelligence project. It even knew about Saturday Night Live's Church Lady character. Watson got an answer about art wrong, and it was stumped on an answer about a theft of a Titian portrait, though nobody had the correct response.

Jennings and Rutter did beat Watson in Final Jeopardy though; they knew which city's largest airport is named after a World War II hero and second largest after a World War II battle. While the human players responded correctly with "What Is Chicago?", Watson demonstrated its confusion with five question marks after its response of "What Is Toronto?????"

It didn't matter, though; Watson knew it had the lead and only risked $947 on its final response of the evening.

Watson, named after IBM's iconic founder, is a project seven years in the making. Its DeepQA software powers its hundreds of simultaneous algorithmic calculations, which help the machine parse human speech patterns, check them against its vast database of knowledge, and provide a most likely answer and a confidence level for that answer. To run all those algorithms, Watson is powered by 90 32-core IBM Power 750 Express servers and 16 terabytes of memory.

Wednesday concludes the three-day Jeopardy Man vs. Machine challenge. Can Jennings and Rutter pull off a comeback and redeem the human race? Who are you rooting for?