Improved high grade anti-theft puzzle lock

The utility model discloses an improved high-anti-theft puzzle lock, comprising a dial, a digital-indicating reference disk, a lock core shaft and a lock core. The utility model is characterized in that the lock core comprises at least three lock core chips, pads among the lock core chips and a lock core seat. The lock core is sheathed on the lock core shaft by a centre hole on the lock core seat. The position between the dial and the lock core is provided singly with the digital-indicating reference disk. The lock core chips can compose the puzzle combination by rotating a shifting pin arranged at the tail end of the lock core shaft. The utility model has the advantages of simple and convenient installation and high theft-proof performance, and can be used widely as the anti-theft lock for various safes and the door and the drawer of the family.