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Answers and rating deltas for
how many ways can we place k rooks on a nxn chessboard safely
| Author | Votes | Δ |
|---|---|---|
| OldCurmudgeon | 3 | +1.77 |
| Tony Ennis | 0 | -1.77 |
Last visited: Sep 14, 2014, 5:07:29 AM