Alphametic - a puzzle in which a sum is represented by words, such that each letter represents a single digit throughout the puzzle and no word starts with zero.
ISNT+THIS+FUN=STUFF
9123+3791+652=13566
Last found:
TEN+EAST+ARM+AS+ALL+SMART+TAP+PSALM=PROPER
LSOTANMEPR=9876543210
The only solution took 400 seconds to verify!