Solve this ‘wordoku’ in the same way as a sudoku with letters instead of numbers (the nine letters once in each row, column and nine-square cell). Once solved, one of the overall diagonals contains the jumbled surname of a French analytical chemist who discovered two elements in the Periodic Table, and was the first to isolate an amino acid from a natural product.

This week’s letters are: A E I L M N Q U V

 

 

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