WEB BONUS Download the FREE Shamrock Chain four-leaf clover appliqu shape. (Problems downloading our PDF? Check out our troubleshooting tips.) The Shamrock Chain strip-pieced Irish Chain throw quilt pattern features alternate blocks with clover leaf appliqus. Change 1 or more of them up with the Web Bonus four-leaf clover shape for a little extra fun! The quilt is patterned in the McCall's Quick Quilts issue shown below.