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NO PURCHASE NECESSARY. VOID WHERE PROHIBITED. Runs 9/5/11 - 12/4/11. Open to legal residents of the 50 U.S. or D.C., 18 & older. Odds of winning depend upon the number of challenge points earned during each Weekly Grand Prize Period. Total ARV: $54,600. Subject to complete Official Rules at http://challenge.buffalowildwings.com.