Putnam 2002 A4
- Session A
In Determinant Tic-Tac-Toe, Player 1 enters a 1 in an empty matrix. Player 0 counters with a 0 in a vacant position, and play continues in turn until the matrix is completed with five 1's and four 0's. Player 0 wins if the determinant is 0 and player 1 wins otherwise. Assuming both players pursue optimal strategies, who will win and how?
Curated text Kedlaya Putnam archive. Quoted with source.
Solutions
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