The word checkerboard is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 28
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (41 words)
acceder, adherer, arbored, backhoe, barcode, barreed, beached, bedrock, boarder, breaker, broader, brocade, cerebra, charred, checked, checker, chocked, coached, coerced, coercer, cohered, coherer, cracked, cracker, creaked, croaked, croaker, crocked, hoarder, hoecake, orchard, reached, reacher, rebaked, reboard, rebored, rebrace, recache, recheck, reheard, roached