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UBC Professor Designs Crosswords for The New York Times

8/25/2025

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Summary

Story summary

Dr. Mark MacLachlan, a chemistry professor at the University of British Columbia, is a crossword creator for major publications.
He utilizes computer programs and dictionaries, spending up to 80 hours on puzzle design.
MacLachlan has submitted three puzzles, including a Sunday crossword accepted by The New York Times.
He frequently creates puzzles while flying, including a chemistry-themed crossword co-created with his son.

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Story summary

Dr. Mark MacLachlan, a chemistry professor at the University of British Columbia, is a crossword creator for major publications.
He utilizes computer programs and dictionaries, spending up to 80 hours on puzzle design.
MacLachlan has submitted three puzzles, including a Sunday crossword accepted by The New York Times.
He frequently creates puzzles while flying, including a chemistry-themed crossword co-created with his son.