Here is a rather hard puzzle. Assign the sixteen numbers 1 through 15 to the letters of OSCAR THUMPBINDLE so that the eight words BASH, BUMP, CLAD, CURE, HORN, MIND, PLOT, and SITE each sume to 30. There are 86 ways four of the sixteen numbers can sum to 30 and therein lies the puzzle's difficulty.
"Most-Perfect Word Magic,"
Word Ways: Vol. 40
, Article 10.
Available at: http://digitalcommons.butler.edu/wordways/vol40/iss4/10