* Chess game search engine

ChessX - Free Chess Database

Where can I find a database of chess games between strong chess engines? (Preferably annotated with scores by both engines) - Quora

Chess Database with Master Chess Games

Only A Chess Engine Would Play Like This

The Biggest Online Chess Database with 9+ Million Games is Free for Chessify Users

Implementing a Chess engine from scratch, by Micaël Paquier

Chenard - a freeware chess program by Don Cross

Chess Games Database Online

* Chess game search engine