We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Doug Mahoney Doug Mahoney ...
There are 32 white squares on a chessboard. Your task is to draw a line that passes through all of the white squares only once, moving via the corners where they touch without lifting your pen off the ...
Magic Squares: A touch of mysticism and a lot of brain-challenging fun! By Marcel Danesi, Ph.D. in Brain Workout One of the most fascinating number games of all time is the magic square. In its ...
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