Partially-Filled Latin Squares and Semi-Magic Squares: A Follow-Up Video

Описание к видео Partially-Filled Latin Squares and Semi-Magic Squares: A Follow-Up Video

In PILES OF CARDS AND SEMI-MAGIC SQUARES    • Card Pile Mathematics and Semi-Magic ...   we proved that for any semi-magic square it is possible to circle non-zero entries, one per column and one per row, and we put that result to use for a card puzzle. Here's a second use: Competing partially-filled Latin squares. Enjoy!

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