Why is using a moves book allowed in Online Chess?

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roder_toro

just wondering...how come the rules change for online chess over live chess? what is the distinction between them

baddogno

Google "correspondence chess" and all will be revealed.  We get a thread on this about once a month; sorry to be so curt.

TheGreatOogieBoogie

There's no practical way of telling people using a book from those using their memories.  The only openings I really memorize are Dutches, some Queen's Indians, and certain Sicilian lines.