"Blow to pieces" is a violent phrase that suggests utter destruction. There are several synonyms for this phrase that can help convey the same level of devastation. Some alternative phrases might include "explode," "shatter," "demolish," or "obliterate." These words all suggest the complete destruction of an object or location, often through explosive means. Other phrases that can be used include "annihilate," "reduce to rubble," "lay waste to," or "scatter to the winds." These synonyms can help writers add more variety to their language while still conveying the same sense of catastrophic destruction.